Nitta SEB User manual

SUPERENDLESSBELT
SEBTM
B-SE-05E 20011000U
http://www.nitta.com.tw
Headquarters: Chia Hsin Building 10FL Room No. 1005, 96 Chung Shan
North Road Section 2,Taipei,Taiwan
Phone:[phone] Fax:[phone]
The specification is subject to change for improvement without notice.
http://www.nitta.co.in
Gat No 191, 192, and 193, Plot No B, Village Vadhu Khurd,
Taluka Haveli Dist Pune-412216, INDIA
Phone:[phone] Fax:[phone]
53, Suchul-daero 5-gil, Gumi-si, Gyeongbuk-do, 39266, KOREA
Phone:[phone] Fax:[phone]
http://www.nitta.co.kr/
http://www.nitta-cn.com
Room2705, Shenggao International Building, No.137 Xianxia
Road,Shanghai 200051 CHINA
Phone:[phone] Fax:[phone]
http://www.nitta.nl
Berenkoog 25, 1822 B.H. Alkmaar,The Netherlands
Phone:[phone] Fax:[phone]
http://www.nitta.com
7605 Nitta Drive, Suwanee,GA 30024, U.S.A.
Phone:[phone] Fax:[phone]
https://www.nitta.co.jp/en
4-4-26 Sakuragawa Naniwa-ku,Osaka 556-0022 Japan
Phone:[phone] Fax:[phone]
http://www.nitta.de
Heerdter Lohweg 35, 40549 Dusseldorf,Germany
Phone:[phone] Fax:[phone]
http://www.nitta.com.sg
<Liaison Office> Indonesia, Vietnam
120 Lower Delta Road, #05-07/08
Cendex Centre,Singapore 169208
Phone:[phone] Fax:[phone]
http://www.nittathai.com
7/472 Moo 6,Tambol Mabyangporn, Amphur Pluakdaeng,
Rayong Province 21140, THAILAND
Phone:[phone] Fax:[phone]
http://www.nitta.com.br
Rua Francisco Mommenshon,50B,Galpão 02
Laranjeiras,Caieiras,São Paulo,Brazil
Phone/Fax:[phone]
405 Industrial Drive Unit 3-8, Milton, Ontario Canada L9T 5B1
http://www.connectbelting.com
Phone:[phone] FAX:[phone]

Since entering the new century, automation has been progressing remarkably. To
develop OA (Office Automation), FA (Factory Automation) and SA (Store Automation),
further sophisticated equipment is needed.
Nitta Corporation has been continuously researching and developing SEBTM (Super
Endless Belt) since its appearance on the market, giving first priority to customer
satisfaction and meeting the demands of the times. As a result, the superior
performance of SEB has produced high reliability.
In 1996, Nitta obtained ISO 9001 certification and is ready to supply products that fit
the increasingly globalized world, through the appropriate quality assurance system.
We provide various types of belts to meet any of your demands.
Table of Contents
Excellent Features
Major Applications
Belt Structure and Properties
List of Products
Types, Properties and Inner Peripheral Length
Pinching Conveyor Belt N Series
Conveyor and Low-Load Power Transmission Belt G15 Series
Conveyor and Low-Load Power Transmission Belt G 30 Series
Conveyor and Medium-Load Power Transmission Belt F50 Series
Conveyor and Medium-Load Power Transmission Belt F100 Series
Medium-Load Power Transmission Belt XA/A Series
High-Load Power Transmission Belt B/D/GS Series
High-Temperature Conveyor and Low-Load Power Transmission Belt H50 Series
Selecting Belt
Selecting Conditions/Procedures
Selecting Type/Structure
Design Materials
Transmitted Power Correction Factor (K1) According to Load Change
Belt Type Selection Diagram and Traction Coefficient (λ)
Calculation for Selecting Belt
Design Calculation
Formulas and Conversion Table
Calculating Belt Inner Peripheral Length
Belt Inner Peripheral Length Nomograph
Flat Pulley and Recommended Shape of Pulley
For Correct Use (Precautions for use)
Troubleshooting
For Safe Use of Products
..................................................................................................1
..................................................................................................2
.....................................................................................3
..............................................................................................4 to 5
.....................................................................6 to 7
.................................8 to 9
............................10 to 11
........................12 to 13
........................14 to 15
..........................................16 to 17
..........................................18 to 19
.....20 to 21
............................................................................22
......................................................................................23
..............................24
..............................................25
...................................................................................26
......................................................................................27 to 28
...............................................................................29
.....................................................................30
....................................................................31
...................................................32 to 33
...............................................................34 to 35
...................................................................................................36
........................................................................................37
Excellent Features
Seamless Belt
Molded seamless belt with excellent dimensional
stability
High Revolution Accuracy
Stable pitch line of the seamless belt ensures high
revolution accuracy.
Maintenance Free
Excellent tension retaining properties
Maintenance (belt replacement, etc.) unnecessary
for a long time
A Variety of Types
You can select a belt appropriate for your use from
a variety of belts with different surface materials,
tension members, structures, etc.
High Environmental Resistance
High resistance to environment including cold, heat
and ozone
Suitable for a wide range of uses
High Oil/Chemical Resistance
Highly resistant to almost all chemicals
Suitable for a wide range of power transmission
and conveyance
Compatible with Small Pulley Diameter
Thin, highly flexible, bendable, abrasion resistant
and durable; SEB provides superior performance
when used for precision power transmission
equipment and conveyors with small pulleys.

Suitable for Every Place and Every Use Belt Structure and Properties
Major Applications
Conveyance
Power
transmission
Pinching conveyance
[Belt cross section]
[Features]
[Labeling]
Series Structure Width (mm) Inner peripheral length
(mm)
Thickness (mm)
[Un necessary for the standard specification]
Example:
High friction against the
conveyor surface
High friction against the
conveyor surface
[Conveying paper sheets pinched between belts]
N (G15/G30/F50/F100) -S□□ Type
Rubber Properties by Belt Types
N (G15/G30/F50/F100) -L□□ Type
General conveyance
ATM (Automatic Teller Machine)/
Coin conveyor
Impregnated surface
(Media surface)
Polished surface
(Media surface)
Tension member
Polished surface
(Pulley surface)
Tension member
Glossy surface
(Pulley surface)
Change machine
Ticket-vending machine
Automatic ticket checker
Card conveyor
Transportation of electronic components
Heat resistant conveyance
Laser beam printer
Bill validator
High-friction conveyance
Folder gluer (feeder)
High-speed power transmission
General industrial machine
Low-load power transmission
OA equipment
Minute torque precision power
transmission Card reader
(Fans and blowers)
Machine tool
(Internal grinder, machining center, milling machine)
Wood working machine
Textile machine
(Draw texturing machine, open-end spinner, loom)
Automatic postal address-reading
and sorting machine (feeder)
Fare box
Automatic game machine
The tension member is on the impregnated surface side; there
is not much difference between the belt speed and the media
speed.
The facing tension members are close to each other; even in a
winding layout, there is not much difference among the belt
speeds.
Due to little difference among the speeds, sliding resistance
(load caused by the pinching layout) is low, thus reducing
power consumption of the machine.
[Belt cross section]
[Features]
[Conveying hard cards pinched between belts]
When a card contacts with a belt at a sharp angle (on a pulley)
during carrying-in/out, damage to the tension member is
absorbed by the surface rubber.
Properties
Excellent as a feeder belt Especially excellent Excellent Examination needed depending on use conditions Poor
Belt Type Crack resistance
Abrasion resistance Oil resistance Ozone resistance Heat resistance Antistatic property
N-SMV1 N-LBU
N-SMV2
A-PB
A-NR
A-OBA
G15-LBU G30-LBU
F50-SBC
F100-LBU F50-LBU
F50-SBU
F50-SBU F100-SBU
G15-SBU G30-SBU
G15-SBC2
H50-LIF H50-SBF
H50-LIF H50-SBF
A-NR A-WN
B-PB D-PB
A-PB B-PB D-PB
A-PB B-PB D-PB
A-PB B-PB
N-SMV1 G15-SBU
N-SMV2
N-SMV1 G15-SBU
N-SMV2
G15 0.65T 300L 15W SBU
2 32
N-SMV1,V2
N-LBU
G15, G30
F50
F100
H50
XA, A, B, D
A
A
B
A
A
GS
-
PB
-
□BU
-
□BC
-
□B
-
PC
-
OBA
-
PSS
-
OC
-
NR
-
WN
1
1
1

List of Products (SEBTM)
A variety of products available to meet your needs accurately and efficiently
Conveyance
Power transmission
Major Applications Series Type Properties Approximate Range of Standard Belt Transmitted Power (per 10 mm width) Page
Recommended
elongation
rate (%)
Breaking
Strength
(N/mm width)
Structure
High-stretch
seamless
knit fabric
Polyester High stretch and high
precision conveyance
High precision conveyance
Minute torque power
transmission
Precision power
transmission
Approximate range of use
High-precision conveyance
Small torque power
transmission
Precision power
transmission
Low-load power
transmission
High-speed conveyance
Low-load power
ransmission
High-speed conveyance
Low-torque, high-speed
power transmission

Medium-torque power transmission

High-speed power transmission
High modulus
Sliding conveyance

High-torque power transmission
Low-torque power
transmission
High-speed power
transmission
Low vibration

High-temperature conveyance

High-temperature,
low-torque power transmission
Polyester
Seamless woven
fabric
Cord
Seamless
woven fabric
Special
heat-resistant
fiber
Heat resistant, lightweight
conveyance and
power transmission
Polyester
Polyester
Glass fiber
Material
Tension member
N
LBU
SMV1
SMV2
SBU
LBU
SBC1
SBC2
LBC
SB
LB
SBU
LBU
SBC1
SBC2
LBC
LB
SBU
LBU
SBC2
LBC
SB
LB
SBU
LBU
SBC2
LBC
SB
LB
PB
PB
PC
OBA
NR
WN
PB
PSS
PB
OC
LIF
SIF
5.0
2.0
2.0
2.0
11.8
10110
2
6
to
7
8
to
9
14
to
15
16
to
17
20
to
21
18
to
19
12
to
13
10
to
11
6.86
8.24N 22.75N
13.24N 36.38N
24.81N 68.25N
8.24N 22.75N
99.34N 273.11N
6.18N 34.12N
49.62N 136.51N
12.36N 34.12N
12.36N 68.25N
5.00N 13.6N
2.45N 6.86N
1.95N 5.48N
1.47N 4.12N
9.31
8.83
17.7
24.5
39.2
29.4
58.8
118
235
216
24.5
2.0
1.0
1.0
0.5
0.5
1.0
1.0
0.3
2.0
LBF
G15
G30
F50
F100
XA
A
B
D
GS
H50
4 5

Pinching Conveyor Belt Standard Dimensional Tolerance
Series
Feature: High-stretch, high-precision conveyor belt; easy installation available even in a complicated layout
Use: Pinching conveyance for ATM and ticket-vending machines
Cross Section
[Fig. 1] Structure of N-SMV□Type [Fig. 2] Structure of N-LBU Type
Impregnated
surface Polished
surface
Glossy
surface
Polyester
seamless
woven fabric
Polished surface
Polyester
seamless
woven fabric
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
(1) Width (mm)
(3)N-SMV1/SMV2 (Thickness: 0.65 mm): List of Inner Peripheral Lengths (mm)
(2)Thickness (mm)
Width
Less than 200
Tolerance: ± 2
200 or more and
less than 300
Tolerance: ± 3
300 or more and
less than 500
Tolerance: ± 4
500 or more and
less than 800
Tolerance: ± 6
800 or more and
less than 1100
Tolerance: ± 7
1100 or more
Tolerance: ± 0.8 %
(4)N-LBU (Thickness: 1.0 mm): List of Inner Peripheral Lengths (mm)
Less than 200
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative.
Tolerance: ± 2
200 or more and
less than 300
Tolerance: ± 3
300 or more and
less than 500
Tolerance: ± 4
500 or more and
less than 800
Tolerance: ± 6
800 or more and
less than 1100
Tolerance: ± 7
1100 or more
Tolerance: ± 0.8 %
Tolerance Thickness Tolerance
Minimum pulley diameter (mm)
Operating temperature range
Fig. 1 Fig. 1 Fig. 2
Millable
urethane
Friction
coefficient
Millable
urethane
Impregnated
surface
Breaking strength (N/mm width)
Standard elongation rate (%)
Impregnated
surface
Polished
surface Polished surface
Polished
surface
Glossy
surface
Millable
urethane
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
(against paper sheet)
Bottom surface
(against SUS)
11 or more and
less than 21
21 or more and
less than 101
0.6 or more and
less than 0.8
0.8 or more and
less than 1.0
1.0 or more
101 or more
8 or more and
less than 11
1
2
3
4
5
6
7
8
9
10
11
12
13
N-SMV1 N-SMV2 N-LBU
8~200 8~200 8~200
0.65 0.65 1.0
8812
6.86 9.31 11.8
5.0 5.0 5.0
0.88 1.18 0.98
0.3to0.6 0.3to0.6 0.4to0.8
0.4to0.8 0.4to0.8 0.5to1.0
88 10
20to 60 20to 60 20to 60
6 7
0.3
0.5
1.0
1.5
80.0
82.0
84.0
86.0
90.0
93.0
97.0
100.0
101.0
103.0
104.0
106.0
107.0
108.0
110.0
111.0
112.0
113.0
114.0
115.0
116.0
117.0
118.0
120.0
123.0
125.0
127.0
128.0
129.0
130.0
132.0
133.0
135.0
138.0
139.0
139.5
140.0
142.0
143.0
144.0
145.0
146.0
149.0
150.0
151.0
154.0
248.0
249.0
251.0
252.0
254.0
256.0
261.0
264.0
267.0
270.0
272.0
275.0
277.0
278.0
282.0
283.0
285.0
285.5
286.0
287.0
288.0
290.0
292.0
297.0
299.0
201.0
202.0
204.0
205.0
206.0
208.0
212.0
213.0
214.0
218.0
222.0
222.5
223.0
225.0
228.0
230.0
235.0
237.0
238.0
240.0
241.0
243.5
244.0
246.0
246.5
247.0
155.0
156.0
160.0
161.0
163.0
164.0
167.0
168.0
171.0
173.0
176.0
177.0
180.0
181.0
182.0
184.0
186.0
190.0
192.0
193.0
195.0
199.0
300.0
301.0
304.0
305.0
306.0
309.0
310.0
313.0
318.0
320.0
322.0
325.0
326.0
328.0
329.0
330.0
332.0
339.0
345.0
349.0
350.0
352.0
358.0
362.0
367.0
371.0
372.0
376.0
381.0
384.0
388.0
390.0
391.0
393.0
397.0
402.0
406.0
410.0
411.0
412.0
414.0
416.0
420.0
421.0
423.0
424.0
425.0
426.0
427.0
429.0
431.0
437.0
443.0
447.0
452.0
454.0
457.0
458.0
459.0
464.0
467.0
468.0
470.0
474.0
482.0
493.0
495.0
0.05
0.06
0.10
804.0
820.0
835.0
854.0
855.0
856.0
862.0
873.0
882.0
883.0
904.0
914.0
919.0
941.0
956.0
966.0
979.0
986.0
1001.0
1007.0
1022.0
1027.0
1029.0
1033.0
1048.0
1057.0
1066.0
1072.0
1073.0
1078.0
1080.0
1088.0
1096.0
1108.0
1123.0
1143.0
1149.0
1150.0
1171.0
1181.0
1198.0
1208.0
1213.0
1238.0
1259.0
1270.0
1279.0
1309.0
1317.0
1341.0
1356.0
1405.0
1425.0
1441.0
1457.0
1488.0
1504.0
1543.0
1558.0
503.0
505.0
510.0
519.0
522.0
529.0
533.0
536.0
537.0
542.0
545.0
548.0
552.0
557.0
559.0
563.5
564.0
572.0
578.0
583.0
586.0
589.0
590.0
593.0
595.0
600.0
604.0
607.0
614.0
619.0
630.0
639.0
642.0
653.0
655.0
661.0
665.0
669.0
674.0
680.0
689.0
697.0
700.0
704.0
711.0
712.0
724.0
734.0
740.0
747.0
754.0
756.0
760.0
765.0
770.0
775.0
790.0
252.5
254.0
255.0
257.5
259.5
264.0
266.5
270.5
273.5
275.5
277.5
280.5
281.0
284.5
285.0
286.5
288.0
288.5
290.0
291.0
293.5
295.0
201.5
203.5
205.0
207.5
208.5
211.5
214.5
215.5
216.5
217.5
220.5
224.5
225.5
228.5
231.5
233.0
238.5
239.0
241.5
243.5
244.0
247.0
249.0
249.5
250.5
82.5
84.0
86.0
88.0
93.0
95.5
96.5
99.5
103.0
104.0
106.0
106.5
108.5
109.0
111.0
112.0
113.0
114.5
115.5
116.0
117.5
119.0
119.5
121.0
121.5
125.0
127.5
129.0
131.0
132.5
134.5
136.0
138.0
140.5
141.5
142.0
143.0
145.0
146.0
147.5
149.0
152.0
153.0
153.5
156.5
158.0
160.0
162.5
164.0
166.0
167.0
170.0
171.0
174.0
176.0
179.0
180.5
183.5
184.5
187.5
189.5
192.5
194.5
196.0
197.5
300.0
302.5
303.0
304.5
307.0
309.0
310.0
312.5
316.0
321.5
323.0
325.0
328.5
329.0
331.5
332.0
335.0
342.0
349.0
353.0
354.0
355.0
361.0
365.5
371.0
374.0
375.0
376.0
380.0
385.0
388.0
391.0
393.5
397.0
400.0
401.0
405.5
409.0
413.5
415.0
416.0
417.0
419.0
423.0
425.0
426.5
427.5
428.5
429.0
430.0
433.0
435.0
441.0
447.0
451.0
456.0
458.0
460.5
463.0
467.5
471.0
474.0
478.0
486.0
496.5
499.0
809.0
824.5
840.0
859.0
859.5
866.5
878.5
886.5
909.0
919.0
923.5
946.0
961.0
972.0
974.0
991.0
1007.0
1012.0
1027.0
1032.5
1034.5
1038.5
1053.5
1063.0
1071.5
1077.0
1079.0
1083.0
1085.5
1094.0
1102.0
1113.5
1128.5
1149.0
1155.0
1156.0
1177.0
1187.0
1204.5
1214.0
1219.5
1244.0
1265.0
1276.0
1285.0
1315.5
1323.5
1347.0
1362.0
1412.0
1432.0
1447.0
1464.0
1495.0
1511.0
1550.0
1565.0
506.5
508.5
514.0
523.0
523.5
526.5
533.0
538.0
540.5
546.0
549.0
552.0
556.5
561.0
562.5
563.0
567.5
568.0
576.5
582.0
587.5
590.0
593.5
597.0
599.5
604.0
608.0
611.0
618.5
623.5
634.5
640.5
643.0
646.5
657.0
659.0
665.0
669.5
673.5
678.0
684.0
693.0
701.0
704.5
709.0
716.0
716.5
728.5
738.5
745.0
751.5
759.0
764.0
770.0
773.0
779.5
794.0
N

Conveyor and Low-Load Power Transmission Belt
Series
Feature: This belt, which uses thin, polyester seamless woven fabric as a tension member, is applied to conveyance and low-load power transmission.
Use: ATM, copy machine sorters, minute-torque precision power transmission, OA equipment, etc.
Cross Section
[Fig.3] Structure of G15-SB□/SBC2 Type
[Fig.5] Structure of G15-SBC1 Type
[Fig.4] Structure of G15-LB□Type
Impregnated
surface
Polished
surface
Glossy
surface
Glossy
surface
Smooth
surface
Polished
surface
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Breaking strength (N/mm width)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
Pulley surface
Fig. 5Fig. 3 Fig. 4 Fig. 3 Fig. 4Fig. 3 Fig. 4
Millable
urethane Millable urethane Chloroprene rubber Chloroprene rubber Chloroprene rubber Nitrile rubber Nitrile rubber
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Smooth surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance Thickness Tolerance
*See (3) of P. 11.
3 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
0.6 or more and
less than 0.8
0.8 or more and
less than 1.0
1.0 or more
(3) G15-SB/SBU/SBC2/G30-SBC* Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative
*For G15-SBC
1
only
1
2
3
4
5
6
7
8
9
10
11
12
13
3to2003to200 3to200 3to200 3to200 3to200 3to200
0.5to1.00.4to0.8 0.4to0.9 0.4to0.8 0.5to1.0 0.4to0.8 0.5to1.0
0.4to0.80.3to0.6 0.4to0.9 0.3to0.6 0.4to0.8 0.3to0.6 0.4to0.8
G15-LBG15-SBG15-LBCG15-SBC2G15-SBC1G15-LBUG15-SBU
1.471.471.471.471.471.471.47
2.02.02.02.02.02.02.0
8.838.838.838.838.838.838.83
106.51064.5106.5
1.00.651.00.60.43
1.0
0.65
6 6 8510 10 15
20to 60
0.3
0.5
1.0
1.5
0.050.43
0.05
0.06
0.10
97.0
100.5
101.0
103.5
104.0
105.5
106.5
108.5
109.5
110.5
112.5
113.5
114.0
115.0
116.5
117.5
118.5
120.0
123.0
125.0
127.0
128.5
129.5
130.0
132.0
133.5
135.5
138.0
139.0
139.5
140.5
142.0
143.5
145.0
146.0
149.5
150.5
151.0
154.0
156.0
157.5
160.0
161.5
163.5
164.5
167.0
168.0
171.0
173.5
176.0
177.5
180.5
182.0
185.0
186.0
190.0
192.0
193.5
195.0
198.5
201.0
202.5
205.5
206.0
209.0
212.0
213.5
215.0
218.0
222.0
223.0
226.0
229.0
230.5
236.0
237.0
238.5
240.5
241.5
244.5
246.5
300.0
300.5
302.0
304.5
306.0
307.0
310.0
313.5
319.0
320.5
322.5
325.5
326.5
329.0
329.5
330.0
332.5
339.5
346.0
350.5
351.0
352.5
358.5
363.0
368.5
372.0
372.5
504.0
506.0
511.0
511.5
520.0
520.5
524.0
530.0
535.0
538.0
543.5
546.5
549.5
554.0
558.0
558.5
560.0
560.5
565.0
565.5
573.5
579.5
585.0
587.5
591.0
594.5
597.0
1111.0
1126.0
1146.5
1152.0
1153.5
1174.5
1184.5
1202.0
1211.5
1217.0
1241.5
1262.5
1273.5
1282.5
1313.0
1321.0
1344.5
1359.5
1409.0
1429.5
1445.0
1461.5
1492.5
1508.5
1547.5
1562.5
702.0
706.5
713.0
714.0
726.0
736.0
741.5
742.5
749.0
756.5
761.5
767.5
770.5
777.0
791.5
806.5
822.0
837.5
856.5
857.0
864.5
876.0
884.0
906.5
916.5
920.5
943.5
958.5
969.0
982.0
988.5
1004.5
1009.0
1024.5
1030.0
1032.0
1036.0
1051.0
1060.5
1069.0
1074.5
1076.5
1081.0
1083.0
1091.0
1099.5
601.5
605.5
608.5
616.0
621.0
632.0
640.5
644.0
654.5
656.5
662.5
667.0
671.0
675.5
681.5
690.5
698.5
373.5
377.5
382.0
385.5
389.0
391.5
394.5
398.5
403.0
406.5
411.0
412.5
413.5
414.5
416.5
420.5
422.5
425.0
426.0
426.5
427.5
430.5
432.5
438.5
444.5
448.5
453.0
455.0
458.0
460.5
465.0
468.5
471.5
475.5
483.5
494.0
496.0
247.0
247.5
250.0
251.5
252.5
255.0
256.5
261.0
264.5
267.5
271.0
273.0
275.5
277.5
278.5
282.5
284.0
285.0
286.0
287.5
288.5
291.0
292.5
297.5
98.5
102.0
102.5
105.0
105.5
107.5
108.0
110.0
111.5
112.5
114.0
114.5
115.0
116.5
118.0
119.0
120.0
121.0
124.5
126.5
128.5
130.0
131.0
131.5
133.5
135.0
137.0
139.5
140.5
141.5
142.0
144.0
145.0
146.5
148.0
151.0
152.0
152.5
155.5
157.5
159.0
161.5
163.0
165.0
166.0
169.0
170.0
172.5
175.0
177.5
179.5
182.5
184.0
186.5
188.0
191.5
193.5
195.0
196.5
200.5
202.5
204.0
205.0
206.5
207.5
210.5
213.5
214.5
215.5
216.5
219.5
223.5
224.5
227.5
230.5
232.0
237.5
238.5
240.5
242.5
243.0
301.5
302.0
303.5
306.0
308.5
309.0
311.5
315.0
320.5
322.0
324.0
327.5
328.0
330.5
331.0
332.0
334.0
341.0
348.0
352.0
353.0
354.0
360.0
364.5
370.0
373.0
374.0
505.5
507.5
513.0
522.0
522.5
525.5
532.0
537.0
539.5
545.0
548.0
551.0
555.5
560.0
561.0
561.5
566.5
567.0
575.5
581.0
586.5
589.0
592.5
596.0
598.5
603.0
607.0
1101.0
1112.5
1127.5
1148.0
1154.0
1155.0
1176.0
1186.0
1203.5
1213.0
1218.5
1243.0
1264.0
1275.0
1284.0
1314.5
1322.5
1346.0
1361.0
1411.0
1431.0
1446.5
1463.0
1494.0
1510.0
1549.0
1564.0
700.0
703.5
708.0
715.0
715.5
727.5
737.5
744.0
750.5
758.0
763.0
769.0
772.0
778.5
793.0
808.0
823.5
839.0
858.5
866.0
877.5
885.5
908.0
918.0
922.5
945.0
960.0
971.0
984.0
990.0
1006.0
1010.5
1026.0
1030.0
1033.5
1037.5
1052.5
1062.0
1070.5
1076.0
1078.0
1082.0
1084.5
1093.0
610.0
617.5
622.5
633.5
642.0
645.5
656.0
658.0
664.0
668.5
672.5
677.0
683.0
692.0
375.0
379.0
384.0
387.0
390.5
393.0
396.0
400.0
404.5
408.0
412.5
414.0
415.0
416.0
418.0
422.0
424.0
425.5
426.5
427.5
428.0
429.0
432.0
434.0
440.0
446.0
450.0
455.0
456.5
459.5
462.0
466.5
470.0
473.0
477.0
485.0
495.5
498.0
246.0
248.0
248.5
249.0
251.5
253.0
254.0
256.5
258.5
263.0
265.5
269.5
272.5
274.5
277.0
279.5
280.0
284.0
285.5
287.0
287.5
289.0
290.0
292.5
294.0
299.0
89
20to 60 20to 80 20to 80 20to 80 20to 80 20to 80
G15
(4) G15-LB□/SBC1 Type: List of Inner Peripheral Lengths (mm)

Conveyor and Low-Load Power Transmission Belt
Series
Feature: This belt, which uses thin, polyester seamless woven fabric as a tension member, is applied to conveyance and low-load power transmission.
Use: ATM, copy machine sorters, minute-torque precision power transmission, OA equipment, etc.
Cross Section
[Fig.6] Structure of G30-SBU,SBC2 Type
[Fig.8] Structure of G30-SBC1 Type
[Fig.7] Structure of G30-LB□Type
Impregnated
surface
Polished
surface
Glossy
surface
Glossy
surface
Smooth
surface
Polished
surface
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Breaking strength (N/mm width)
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Standard elongation rate (%)
Axial load at the standard elongation rate
under stable conditions (N/mm width)
Top surface
Pulley surface
Types and Properties
Millable
urethane Millable urethane Chloroprene rubber Chloroprene rubber Chloroprene rubber Nitrilerubber
Fig. 8
Fig. 6 Fig. 7 Fig. 7Fig. 6 Fig. 7
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Smooth surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Polished
surface
Glossy surface
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance
3 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
Thickness Tolerance
0.6 or more and
less than 0.8
0.8 or more and
less than 1.0
1.0 or more
*For G30-SBC2, see (3) of P. 9.
*For G30-SBC1 only
(3) G30-SBU (Thickness: 0.8 mm) Type: List of Inner Peripheral Lengths (mm)
(4) G30-LB□/SBC1 Type: List of Inner Peripheral Lengths (mm)
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot.
Less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
Less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
0.3
0.5
1.0
1.5
0.05
0.05
0.06
0.10
0.50
10 11
1
2
3
4
5
6
7
8
9
10
11
12
13
3to2003to200 3to200 3to200 3to200 3to200
0.5to1.00.4to0.8 0.4to0.9 0.4to0.8 0.5to1.0 0.5to1.0
0.4to0.80.3to0.6 0.4to0.9 0.3to0.6 0.4to0.8 0.4to0.8
G30-LBG30-LBCG30-SBC2G30-SBC1G30-LBUG30-SBU
1.01.00.60.5
1.0
0.8
101065108
2.942.942.942.942.942.94
2.02.02.02.02.02.0
17.717.717.717.717.717.7
8 6510 10 15
20to 60 20to 60 20to 80 20to 80 20to 80 20to 80
96.5
99.0
100.0
102.0
102.5
104.5
106.0
107.5
108.5
110.0
111.5
112.5
113.0
114.0
115.0
117.0
118.0
119.5
122.5
124.5
126.0
127.5
128.5
129.0
130.5
132.5
134.5
137.5
138.0
139.5
141.5
142.0
143.5
145.5
149.0
150.0
150.5
153.5
154.0
157.0
158.5
160.5
162.5
163.5
166.5
167.5
170.5
172.0
175.5
177.0
180.0
181.0
184.0
189.0
190.5
192.5
194.0
198.0
200.0
201.5
205.0
206.0
208.0
211.5
213.0
213.5
217.0
221.0
222.0
225.0
228.0
229.5
234.5
236.0
238.0
240.0
240.5
244.0
245.5
246.0
246.5
301.0
303.5
305.5
307.0
309.0
313.0
318.0
319.0
321.5
325.5
326.0
328.0
329.0
332.0
339.0
345.5
349.5
350.0
351.5
358.0
361.5
368.0
372.0
372.5
374.0
377.0
381.5
502.5
504.5
510.5
518.5
522.5
529.0
533.0
537.5
543.0
545.5
548.5
552.5
558.0
560.0
563.5
573.5
578.5
584.0
587.0
590.0
593.5
596.0
600.5
604.5
607.5
615.0
620.0
1108.0
1123.5
1144.0
1150.0
1150.5
1171.5
1181.5
1199.5
1208.5
1214.5
1239.5
1261.0
1271.0
1280.5
1310.5
1318.5
1343.0
1358.5
1407.0
1427.5
1442.5
1459.0
1489.5
1505.5
1545.0
1560.0
701.0
706.0
712.5
713.0
725.0
735.0
742.0
748.0
755.5
760.5
765.5
770.5
776.0
790.5
805.5
821.0
836.0
856.0
863.0
874.5
883.5
905.0
914.5
920.0
942.5
958.0
967.5
980.5
987.5
1004.0
1008.0
1022.5
1029.0
1031.0
1033.5
1048.5
1058.0
1068.0
1074.0
1075.0
1079.0
1081.5
1088.5
1097.0
631.5
639.5
643.0
654.0
655.0
660.5
666.0
670.0
674.5
681.0
690.0
698.0
385.0
388.0
389.5
393.5
397.5
402.0
405.5
410.0
411.0
412.5
413.5
414.0
415.5
419.0
422.0
424.5
425.0
426.0
427.0
430.0
431.5
438.0
443.0
447.5
451.0
454.5
457.0
460.0
463.5
467.5
470.5
475.0
482.5
493.0
495.0
247.0
249.0
250.0
251.5
254.5
256.0
259.5
260.0
263.5
266.5
270.0
272.0
274.0
276.5
278.0
281.0
283.0
284.5
285.0
286.0
288.0
290.0
292.0
297.0
299.0
299.5
98.5
102.0
102.5
105.0
105.5
107.5
108.0
110.0
111.5
112.5
114.0
114.5
115.0
116.5
118.0
119.0
120.0
121.0
124.5
126.5
128.5
130.0
131.0
131.5
133.5
135.0
137.0
139.5
140.5
141.5
142.0
144.0
145.0
146.5
148.0
151.0
152.0
152.5
155.5
157.5
159.0
161.5
163.0
165.0
166.0
169.0
170.0
172.5
175.0
177.5
179.5
182.5
184.0
186.5
188.0
191.5
193.5
195.0
196.5
200.5
202.5
204.0
205.0
206.5
207.5
210.5
213.5
214.5
215.5
216.5
219.5
223.5
224.5
227.5
230.5
232.0
237.5
238.5
240.5
242.5
243.0
301.5
302.0
303.5
306.0
308.5
309.0
311.5
315.0
320.5
322.0
324.0
327.5
328.0
330.5
331.0
332.0
334.0
341.0
348.0
352.0
353.0
354.0
360.0
364.5
370.0
373.0
374.0
505.5
507.5
513.0
522.0
522.5
525.5
532.0
537.0
539.5
545.0
548.0
551.0
555.5
560.0
561.0
561.5
566.5
567.0
575.5
581.0
586.5
589.0
592.5
596.0
598.5
603.0
607.0
1101.0
1112.5
1127.5
1148.0
1154.0
1155.0
1176.0
1186.0
1203.5
1213.0
1218.5
1243.0
1264.0
1275.0
1284.0
1314.5
1322.5
1346.0
1361.0
1411.0
1431.0
1446.5
1463.0
1494.0
1510.0
1549.0
1564.0
700.0
703.5
708.0
715.0
715.5
727.5
737.5
744.0
750.5
758.0
763.0
769.0
772.0
778.5
793.0
808.0
823.5
839.0
858.5
866.0
877.5
885.5
908.0
918.0
922.5
945.0
960.0
971.0
984.0
990.0
1006.0
1010.5
1026.0
1030.0
1033.5
1037.5
1052.5
1062.0
1070.5
1076.0
1078.0
1082.0
1084.5
1093.0
610.0
617.5
622.5
633.5
642.0
645.5
656.0
658.0
664.0
668.5
672.5
677.0
683.0
692.0
375.0
379.0
384.0
387.0
390.5
393.0
396.0
400.0
404.5
408.0
412.5
414.0
415.0
416.0
418.0
422.0
424.0
425.5
426.5
427.5
428.0
429.0
432.0
434.0
440.0
446.0
450.0
455.0
456.5
459.5
462.0
466.5
470.0
473.0
477.0
485.0
495.5
498.0
246.0
248.0
248.5
249.0
251.5
253.0
254.0
256.5
258.5
263.0
265.5
269.5
272.5
274.5
277.0
279.5
280.0
284.0
285.5
287.0
287.5
289.0
290.0
292.5
294.0
299.0
G30

Conveyor and Medium-Load Power Transmission Belt
Series
Feature: This belt, which uses polyester seamless woven fabric as a tension member, is applied to conveyance and power transmission.
Use: OA equipment, ticket-vending machines, ATM, etc.
Cross Section
[Fig.9] Structure of F50-SB□Type [Fig.10] Structure of F50-LB□Type
Impregnated
surface
Polished
surface
Polished
surface
Glossy
surface
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Breaking strength (N/mm width)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
Pulley surface
Fig. 9Fig. 9 Fig. 10 Fig. 10Fig. 10 Fig. 9
Millable
urethane Millable urethane Chloroprene rubber Chloroprene rubber Nitrile rubber Nitrile rubber
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance Thickness Tolerance
5 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
0.8 or more and
less than 1.0
1.0 or more
(3) F50-SB□(Thickness: 0.8 mm) Type: List of Inner Peripheral Lengths (mm)
(4) F50-LB□(Thickness: 1.0 mm) Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative.
1
2
3
4
5
6
7
8
9
10
11
12
13
F50-LBF50-SBF50-LBCF50-SBC2F50-LBUF50-SBU
4.94.9 4.9 4.9 4.9 4.9
2.02.0 2.0 2.0 2.0 2.0
24.524.5 24.5 24.5 24.5 24.5
108810810
1.00.8 0.8 1.0 0.8 1.0
5to2005to200 5to200 5to200 5to200 5to200
0.5to1.0
0.4to0.8 0.4to0.8 0.5to1.0 0.4to0.8 0.5to1.0
0.4to0.8
0.3to0.6 0.3to0.6 0.4to0.8 0.3to0.6 0.4to0.8
10 15 201015 15
20to 60
0.3
0.5
1.0
1.5
0.06
0.10
96.5
99.0
100.0
102.0
102.5
104.5
106.0
107.5
108.5
110.0
111.5
112.5
113.0
114.0
115.0
117.0
118.0
119.5
122.5
124.5
126.0
127.5
128.5
129.0
130.5
132.5
134.5
137.5
138.0
139.5
141.5
142.0
143.5
145.5
149.0
150.0
150.5
153.5
154.0
157.0
158.5
160.5
162.5
163.5
166.5
167.5
170.5
172.0
175.5
177.0
180.0
181.0
184.0
189.0
190.5
192.5
194.0
198.0
200.0
201.5
205.0
206.0
208.0
211.5
213.0
213.5
217.0
221.0
222.0
225.0
228.0
229.5
234.5
236.0
238.0
240.0
240.5
244.0
245.5
246.0
246.5
301.0
303.5
305.5
307.0
309.0
313.0
318.0
319.0
321.5
325.5
326.0
328.0
329.0
332.0
339.0
345.5
349.5
350.0
351.5
358.0
361.5
368.0
372.0
372.5
374.0
377.0
381.5
502.5
504.5
510.5
518.5
522.5
529.0
533.0
537.5
543.0
545.5
548.5
552.5
558.0
560.0
563.5
573.5
578.5
584.0
587.0
590.0
593.5
596.0
600.5
604.5
607.5
615.0
620.0
1108.0
1123.5
1144.0
1150.0
1150.5
1171.5
1181.5
1199.5
1208.5
1214.5
1239.5
1261.0
1271.0
1280.5
1310.5
1318.5
1343.0
1358.5
1407.0
1427.5
1442.5
1459.0
1489.5
1505.5
1545.0
1560.0
701.0
706.0
712.5
713.0
725.0
735.0
742.0
748.0
755.5
760.5
765.5
770.5
776.0
790.5
805.5
821.0
836.0
856.0
863.0
874.5
883.5
905.0
914.5
920.0
942.5
958.0
967.5
980.5
987.5
1004.0
1008.0
1022.5
1029.0
1031.0
1033.5
1048.5
1058.0
1068.0
1074.0
1075.0
1079.0
1081.5
1088.5
1097.0
631.5
639.5
643.0
654.0
655.0
660.5
666.0
670.0
674.5
681.0
690.0
698.0
385.0
388.0
389.5
393.5
397.5
402.0
405.5
410.0
411.0
412.5
413.5
414.0
415.5
419.0
422.0
424.5
425.0
426.0
427.0
430.0
431.5
438.0
443.0
447.5
451.0
454.5
457.0
460.0
463.5
467.5
470.5
475.0
482.5
493.0
495.0
247.0
249.0
250.0
251.5
254.5
256.0
259.5
260.0
263.5
266.5
270.0
272.0
274.0
276.5
278.0
281.0
283.0
284.5
285.0
286.0
288.0
290.0
292.0
297.0
299.0
299.5
98.5
102.0
102.5
105.0
105.5
107.5
108.0
110.0
111.5
112.5
114.0
114.5
115.0
116.5
118.0
119.0
120.0
121.0
124.5
126.5
128.5
130.0
131.0
131.5
133.5
135.0
137.0
139.5
140.5
141.5
142.0
144.0
145.0
146.5
148.0
151.0
152.0
152.5
155.5
157.5
159.0
161.5
163.0
165.0
166.0
169.0
170.0
172.5
175.0
177.5
179.5
182.5
184.0
186.5
188.0
191.5
193.5
195.0
196.5
200.5
202.5
204.0
205.0
206.5
207.5
210.5
213.5
214.5
215.5
216.5
219.5
223.5
224.5
227.5
230.5
232.0
237.5
238.5
240.5
242.5
243.0
301.5
302.0
303.5
306.0
308.5
309.0
311.5
315.0
320.5
322.0
324.0
327.5
328.0
330.5
331.0
332.0
334.0
341.0
348.0
352.0
353.0
354.0
360.0
364.5
370.0
373.0
374.0
505.5
507.5
513.0
522.0
522.5
525.5
532.0
537.0
539.5
545.0
548.0
551.0
555.5
560.0
561.0
561.5
566.5
567.0
575.5
581.0
586.5
589.0
592.5
596.0
598.5
603.0
607.0
1101.0
1112.5
1127.5
1148.0
1154.0
1155.0
1176.0
1186.0
1203.5
1213.0
1218.5
1243.0
1264.0
1275.0
1284.0
1314.5
1322.5
1346.0
1361.0
1411.0
1431.0
1446.5
1463.0
1494.0
1510.0
1549.0
1564.0
700.0
703.5
708.0
715.0
715.5
727.5
737.5
744.0
750.5
758.0
763.0
769.0
772.0
778.5
793.0
808.0
823.5
839.0
858.5
866.0
877.5
885.5
908.0
918.0
922.5
945.0
960.0
971.0
984.0
990.0
1006.0
1010.5
1026.0
1030.0
1033.5
1037.5
1052.5
1062.0
1070.5
1076.0
1078.0
1082.0
1084.5
1093.0
610.0
617.5
622.5
633.5
642.0
645.5
656.0
658.0
664.0
668.5
672.5
677.0
683.0
692.0
375.0
379.0
384.0
387.0
390.5
393.0
396.0
400.0
404.5
408.0
412.5
414.0
415.0
416.0
418.0
422.0
424.0
425.5
426.5
427.5
428.0
429.0
432.0
434.0
440.0
446.0
450.0
455.0
456.5
459.5
462.0
466.5
470.0
473.0
477.0
485.0
495.5
498.0
246.0
248.0
248.5
249.0
251.5
253.0
254.0
256.5
258.5
263.0
265.5
269.5
272.5
274.5
277.0
279.5
280.0
284.0
285.5
287.0
287.5
289.0
290.0
292.5
294.0
299.0
20to 60 20to 80 20to 80 20to 80 20to 80
12 13
F50

Conveyor and Medium-Load Power Transmission Belt
Series
Feature: This belt, which uses polyester seamless woven fabric as a tension member, is applied to conveyance and power transmission.
Use: OA equipment, ticket-vending machines, ATM, etc.
Cross Section
[Fig.11] Structure of F100-SB□Type [Fig.12] Structure of F100-LBB□Type
Impregnated
surface
Polished
surface
Polished
surface
Glossy
surface
Polyester
seamless
woven fabric
Polyester
seamless
woven fabric
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Breaking strength (N/mm width)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
Pulley surface
Fig. 11Fig. 11 Fig. 12 Fig. 12Fig. 12 Fig. 11
Millable
urethane Millable urethane Chloroprene rubber Chloroprene rubber Nitrile rubber Nitrile rubber
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Impregnated
surface
Polished
surface
Polished
surface
Glossy surface
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance Thickness Tolerance
5 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
0.8 or more and
less than 1.0
1.0 or more
(3) F100-SB□(Thickness: 0.8 mm) Type: List of Inner Peripheral Lengths (mm)
(4) F100-LB□(Thickness: 1.0 mm) Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 500
Tolerance: ± 3 mm
500 or more and
less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative.
14 15
1
2
3
4
5
6
7
8
9
10
11
12
13
0.3
0.5
1.0
1.5
0.06
0.10
96.5
99.0
100.0
102.0
102.5
104.5
106.0
107.5
108.5
110.0
111.5
112.5
113.0
114.0
115.0
117.0
118.0
119.5
122.5
124.5
126.0
127.5
128.5
129.0
130.5
132.5
134.5
137.5
138.0
139.5
141.5
142.0
143.5
145.5
149.0
150.0
150.5
153.5
154.0
157.0
158.5
160.5
162.5
163.5
166.5
167.5
170.5
172.0
175.5
177.0
180.0
181.0
184.0
189.0
190.5
192.5
194.0
198.0
200.0
201.5
205.0
206.0
208.0
211.5
213.0
213.5
217.0
221.0
222.0
225.0
228.0
229.5
234.5
236.0
238.0
240.0
240.5
244.0
245.5
246.0
246.5
301.0
303.5
305.5
307.0
309.0
313.0
318.0
319.0
321.5
325.5
326.0
328.0
329.0
332.0
339.0
345.5
349.5
350.0
351.5
358.0
361.5
368.0
372.0
372.5
374.0
377.0
381.5
502.5
504.5
510.5
518.5
522.5
529.0
533.0
537.5
543.0
545.5
548.5
552.5
558.0
560.0
563.5
573.5
578.5
584.0
587.0
590.0
593.5
596.0
600.5
604.5
607.5
615.0
620.0
1108.0
1123.5
1144.0
1150.0
1150.5
1171.5
1181.5
1199.5
1208.5
1214.5
1239.5
1261.0
1271.0
1280.5
1310.5
1318.5
1343.0
1358.5
1407.0
1427.5
1442.5
1459.0
1489.5
1505.5
1545.0
1560.0
701.0
706.0
712.5
713.0
725.0
735.0
742.0
748.0
755.5
760.5
765.5
770.5
776.0
790.5
805.5
821.0
836.0
856.0
863.0
874.5
883.5
905.0
914.5
920.0
942.5
958.0
967.5
980.5
987.5
1004.0
1008.0
1022.5
1029.0
1031.0
1033.5
1048.5
1058.0
1068.0
1074.0
1075.0
1079.0
1081.5
1088.5
1097.0
631.5
639.5
643.0
654.0
655.0
660.5
666.0
670.0
674.5
681.0
690.0
698.0
385.0
388.0
389.5
393.5
397.5
402.0
405.5
410.0
411.0
412.5
413.5
414.0
415.5
419.0
422.0
424.5
425.0
426.0
427.0
430.0
431.5
438.0
443.0
447.5
451.0
454.5
457.0
460.0
463.5
467.5
470.5
475.0
482.5
493.0
495.0
247.0
249.0
250.0
251.5
254.5
256.0
259.5
260.0
263.5
266.5
270.0
272.0
274.0
276.5
278.0
281.0
283.0
284.5
285.0
286.0
288.0
290.0
292.0
297.0
299.0
299.5
98.5
102.0
102.5
105.0
105.5
107.5
108.0
110.0
111.5
112.5
114.0
114.5
115.0
116.5
118.0
119.0
120.0
121.0
124.5
126.5
128.5
130.0
131.0
131.5
133.5
135.0
137.0
139.5
140.5
141.5
142.0
144.0
145.0
146.5
148.0
151.0
152.0
152.5
155.5
157.5
159.0
161.5
163.0
165.0
166.0
169.0
170.0
172.5
175.0
177.5
179.5
182.5
184.0
186.5
188.0
191.5
193.5
195.0
196.5
200.5
202.5
204.0
205.0
206.5
207.5
210.5
213.5
214.5
215.5
216.5
219.5
223.5
224.5
227.5
230.5
232.0
237.5
238.5
240.5
242.5
243.0
301.5
302.0
303.5
306.0
308.5
309.0
311.5
315.0
320.5
322.0
324.0
327.5
328.0
330.5
331.0
332.0
334.0
341.0
348.0
352.0
353.0
354.0
360.0
364.5
370.0
373.0
374.0
505.5
507.5
513.0
522.0
522.5
525.5
532.0
537.0
539.5
545.0
548.0
551.0
555.5
560.0
561.0
561.5
566.5
567.0
575.5
581.0
586.5
589.0
592.5
596.0
598.5
603.0
607.0
1101.0
1112.5
1127.5
1148.0
1154.0
1155.0
1176.0
1186.0
1203.5
1213.0
1218.5
1243.0
1264.0
1275.0
1284.0
1314.5
1322.5
1346.0
1361.0
1411.0
1431.0
1446.5
1463.0
1494.0
1510.0
1549.0
1564.0
700.0
703.5
708.0
715.0
715.5
727.5
737.5
744.0
750.5
758.0
763.0
769.0
772.0
778.5
793.0
808.0
823.5
839.0
858.5
866.0
877.5
885.5
908.0
918.0
922.5
945.0
960.0
971.0
984.0
990.0
1006.0
1010.5
1026.0
1030.0
1033.5
1037.5
1052.5
1062.0
1070.5
1076.0
1078.0
1082.0
1084.5
1093.0
610.0
617.5
622.5
633.5
642.0
645.5
656.0
658.0
664.0
668.5
672.5
677.0
683.0
692.0
375.0
379.0
384.0
387.0
390.5
393.0
396.0
400.0
404.5
408.0
412.5
414.0
415.0
416.0
418.0
422.0
424.0
425.5
426.5
427.5
428.0
429.0
432.0
434.0
440.0
446.0
450.0
455.0
456.5
459.5
462.0
466.5
470.0
473.0
477.0
485.0
495.5
498.0
246.0
248.0
248.5
249.0
251.5
253.0
254.0
256.5
258.5
263.0
265.5
269.5
272.5
274.5
277.0
279.5
280.0
284.0
285.5
287.0
287.5
289.0
290.0
292.5
294.0
299.0
F1000-LBF100-SBF100-LBCF100-SBC2F100-LBUF100-SBU
7.847.84 7.84 7.84 7.84 7.84
2.02.0 2.0 2.0 2.0 2.0
39.239.2 39.2 39.2 39.2 39.2
108810810
1.00.8 0.8 1.0 0.8 1.0
5to2005to200 5to200 5to200 5to200 5to200
0.5to1.0
0.4to0.8 0.4to0.8 0.5to1.0 0.4to0.8 0.5to1.0
0.4to0.8
0.3to0.6 0.3to0.6 0.4to0.8 0.3to0.6 0.4to0.8
2010 151015 15
20to 60 20to 60 20to 80 20to 80 20to 80 20to 80
F100

Glossy
surface
Medium-Load Power Transmission Belt
Series
Feature: This belt, which uses a cord as a tension member, is applied to medium-load power transmission.
Use: Low-torque, high-speed power transmission, draw texturing machines, feeder belts, etc.
Cross Section
[Fig.13] Structure of XA and A-P□Type
[Fig.15] Structure of A-NR/WN Type
[Fig.14] Structure of A-OBA Type
Glossy
surface
Impregnated
surface
Polyamide
woven fabric
Polyester
cord
(Conductive
thread)
Polyester
cord
Polished
surface
Polyamide
woven fabric
Polyamide
woven fabric
Polyester
cord
Polished
surface
Polished
surface
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
(Against cardboard) (Against cardboard)
Pulley surface
Fig. 14Fig. 13 Fig. 13 Fig. 15 Fig. 15Fig. 13
Breaking strength (N/mm width)
Nitrile rubber Nitrile rubber Nitrile rubber Chloroprene
rubber Blue natural rubber White natural rubber
Glossy surface Glossy surface Glossy surface
Glossy surface Glossy surface
Polished
surface Polished surface Polished surface Polished surface
Polished
surface
Impregnated
surface Polished surface
1 The maximum width of the above types (except for A-NR and A-WN) is 1/5 of the inner peripheral length.
2 For A-NR and A-WN, specify thickness. (We provide you a belt with a length on a 1 mm basis)
3 Minimum pulley diameter of A-NR and A-WN is 10 times number of the thickness.
1
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance Thickness Tolerance ToleranceBelt type
5 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
1.0 or more
2
3 3
(3) XA/A Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 600
Tolerance: ± 3 mm
600 or more and
less than 800
Tolerance: ± 4 mm
800 or more and
less than 1000
Tolerance: ± 5 mm
1000 or more
Tolerance: ± 0.5 %
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. When ordering the belt with length other than the above, consult us.
For details, contact our agencies or our sales representative.
We can provide you A-NR/A-WN with a length from 400 – 1970 mm.
1
2
3
4
5
6
7
8
9
10
11
12
13
0.3
0.5
1.0
1.5
1.0 0.50
A-WN
A-NR
16 17
XA A
0.2to0.40.2to0.4 0.1to0.3 0.2to0.4
0.4to0.80.4to0.8 0.4to0.8 0.4to0.8
14.77.35 14.7 14.7 7.35 7.35
1.01.0 1.0 1.0 0.5 0.5
58.8
29.4 58.8 58.8 58.8 58.8
1412 14 14 102 102
1.21.1 1.2 1.2
1.5 2.0
3.0to8.0 3.0to8.0
5to4005to400 5to400 5to400 7to400 7to400
A-WNA-NRA-PCA-OBAA-PBXA-PB
15
20to 80 20to 80 20to 80 20to 80 20to 60 20to 60
15 15 15 80 80
181.0
184.0
189.0
191.0
192.0
194.0
198.0
200.0
202.0
204.0
205.0
208.0
210.0
212.0
214.0
216.0
220.0
221.0
224.0
227.0
230.0
235.0
236.0
238.0
239.0
240.0
243.0
245.0
247.0
248.0
1000.0
1008.0
1016.0
1021.0
1023.0
1026.0
1041.0
1050.0
1060.0
1066.0
1067.0
1071.0
1073.0
1080.0
1093.0
1100.0
1115.0
1135.0
1142.0
1145.0
1165.0
1175.0
1190.0
1200.0
1207.0
1230.0
1234.0
1250.0
1261.0
1270.0
1285.0
1300.0
1308.0
1338.0
1350.0
1396.0
1415.0
1430.0
1450.0
1478.0
1500.0
1535.0
1550.0
1590.0
1600.0
1620.0
1645.0
1653.0
1660.0
1700.0
1708.0
1800.0
1835.0
1850.0
1890.0
1965.0
1970.0
2070.0
2100.0
2118.0
2150.0
2160.0
2181.0
2185.0
2190.0
2200.0
2230.0
2248.0
2270.0
2300.0
2360.0
2500.0
2570.0
2750.0
2808.0
2819.0
2890.0
3336.0
4525.0
300.0
302.0
305.0
306.0
307.0
312.0
316.0
317.0
320.0
324.0
326.0
327.0
328.0
331.0
338.0
344.0
347.0
348.0
350.0
356.0
360.0
366.0
369.0
370.0
374.0
380.0
382.0
386.0
388.0
392.0
396.0
400.0
404.0
407.0
409.0
410.0
411.0
414.0
417.0
420.0
421.0
422.0
423.0
426.0
427.0
430.0
435.0
441.0
445.0
450.0
452.0
456.0
457.0
461.0
465.0
498.0
472.0
480.0
489.0
493.0
250.0
251.0
254.0
255.0
260.0
263.0
266.0
269.0
272.0
274.0
276.0
278.0
281.0
282.0
283.0
284.0
285.0
287.0
289.0
291.0
295.0
296.0
298.0
500.0
501.0
508.0
516.0
520.0
525.0
529.0
534.0
539.0
542.0
545.0
550.0
553.0
555.0
560.0
570.0
575.0
580.0
583.0
586.0
589.0
592.0
597.0
800.0
815.0
830.0
850.0
857.0
870.0
876.0
900.0
904.0
908.0
913.0
935.0
950.0
960.0
973.0
980.0
995.0
128.0
128.5
129.0
131.0
133.0
135.0
137.0
138.0
140.0
141.0
143.0
144.0
145.0
149.0
149.5
150.0
153.0
154.0
157.0
159.0
160.0
162.0
164.0
166.0
167.0
170.0
172.0
175.0
177.0
180.0
600.0
605.0
610.0
617.0
626.0
635.0
638.0
648.0
650.0
656.0
660.0
665.0
670.0
676.0
685.0
692.0
695.0
700.0
707.0
708.0
720.0
729.0
736.0
743.0
750.0
755.0
760.0
764.0
770.0
785.0

High-Load Power Transmission Belt
Series
Feature: This belt, which uses a cord as a tension member, is mainly applied to high-load power transmission.
Use: Grinding machines, internal grinders, industrial vacuum cleaners, etc.
Cross Section
[Fig.16] Structure of B/D-PB Type [Fig.17] Structure of GS-OC Type
Glossy
surface
Glossy
surface
Polyamide
woven fabric Polyamide
woven fabric
Polyester
cord
Polished
surface
Impregnated
surface
Impregnated
surface
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Friction
coefficient
(against SUS)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
Pulley surface
Breaking strength (N/mm width)
The maximum width is 1/5 of the inner peripheral length.
Fig. 16 Fig. 16 Fig. 17
5 to 400 5 to 400 5 to 400
Nitrile rubber Chloroprene
rubber
Nitrile rubber
Glossy surface Glossy surface
Polished
surface Polished surface Impregnated surface
Impregnated
surface
Standard Dimensional Tolerance
(1) Width (mm) (2) Thickness of B/D Type (mm)
Width Tolerance Thickness Tolerance ToleranceBelt type
5 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
1.0 or more
0.8 or more and
less than 1.0
(3) B/D Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 600
Tolerance: ± 3 mm
600 or more and
less than 800
Tolerance: ± 4 mm
800 or more and
less than 1000
Tolerance: ± 5 mm
1000 or more
Tolerance: ± 0.5 %
(4) GS Type: List of Inner Peripheral Lengths (mm)
Inner peripheral length of less than 300
Tolerance: ± 2 mm
300 or more and less than 600
Tolerance: ± 3 mm
600 or more and
less than 800
Tolerance: ± 4 mm
800 or more and
less than 1000
Tolerance: ± 5 mm
1000 or more
Tolerance: ± 0.5 %
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative.
B D GS
1
2
3
4
5
6
7
8
9
10
11
12
13
0.3
0.5
1.0
1.5
0.06
0.10
0.10
0.15
GS-OC
GL-OC
1.4 1.7 0.75
1.0 1.0 0.3
29.4 58.8 14.7
118 235 167
16 20 10
0.4to0.8 0.4to0.8 0.1to0.3
0.2to0.4 0.2to0.4 0.1to0.3
B-PB D-PB GS-OC
25
20to 80
18 19
35 20
20to 8020to 80
274.0
276.0
278.0
280.0
283.0
285.0
286.0
287.0
288.0
290.0
292.0
294.0
299.0
186.0
191.0
192.0
194.0
196.0
200.0
202.0
203.0
206.0
207.0
210.0
213.0
214.0
216.0
219.0
223.0
224.0
227.0
230.0
232.0
237.0
238.0
240.0
242.0
243.0
246.0
247.0
247.5
249.0
251.0
252.0
253.0
256.0
258.0
262.0
265.0
269.0
272.0
147.0
150.0
151.0
152.0
155.0
156.0
159.0
160.0
162.0
164.0
165.0
168.0
169.0
172.0
174.0
177.0
179.0
182.0
183.0
603.0
607.0
610.0
617.0
622.0
634.0
642.0
645.0
656.0
657.0
663.0
668.0
672.0
677.0
684.0
692.0
700.0
704.0
708.0
714.0
715.0
727.0
737.0
743.0
750.0
758.0
763.0
768.0
772.0
778.0
793.0
808.0
823.0
839.0
858.0
865.0
877.0
885.0
908.0
917.0
922.0
945.0
960.0
970.0
983.0
990.0
363.0
370.0
373.0
375.0
378.0
383.0
387.0
390.0
392.0
396.0
400.0
404.0
408.0
412.0
413.0
415.0
417.0
421.0
424.0
425.0
427.0
521.0
525.0
531.0
535.0
539.0
540.0
545.0
548.0
551.0
555.0
559.0
561.0
566.0
575.0
581.0
586.0
589.0
592.0
596.0
598.0
428.0
429.0
432.0
434.0
440.0
445.0
450.0
453.0
456.0
459.0
462.0
466.0
470.0
473.0
477.0
484.0
495.0
497.0
505.0
507.0
512.0
301.0
302.0
303.0
306.0
307.0
309.0
311.0
315.0
320.0
321.0
323.0
328.0
330.0
331.0
332.0
341.0
347.0
351.0
352.0
353.0
360.0
1185.0
1202.0
1212.0
1217.0
1242.0
1263.0
1274.0
1283.0
1313.0
1321.0
1346.0
1361.0
1410.0
1430.0
1445.0
1462.0
1493.0
1509.0
1548.0
1563.0
1006.0
1011.0
1025.0
1031.0
1033.0
1036.0
1051.0
1061.0
1070.0
1074.0
1077.0
1081.0
1084.0
1091.0
1100.0
1111.0
1126.0
1147.0
1153.0
1156.0
1174.0
181.0
184.0
189.0
191.0
192.0
194.0
198.0
200.0
202.0
204.0
205.0
208.0
210.0
212.0
214.0
216.0
220.0
221.0
224.0
227.0
230.0
235.0
236.0
238.0
239.0
240.0
243.0
245.0
247.0
248.0
1000.0
1008.0
1016.0
1021.0
1023.0
1026.0
1041.0
1050.0
1060.0
1066.0
1067.0
1071.0
1073.0
1080.0
1093.0
1100.0
1115.0
1135.0
1142.0
1145.0
1165.0
1175.0
1190.0
1200.0
1207.0
1230.0
1234.0
1250.0
1261.0
1270.0
1285.0
1300.0
1308.0
1338.0
1350.0
1396.0
1415.0
1430.0
1450.0
1478.0
1500.0
1535.0
1550.0
1590.0
1600.0
1620.0
1645.0
1653.0
1660.0
1700.0
1708.0
1800.0
1835.0
1850.0
1890.0
1965.0
1970.0
2070.0
2100.0
2118.0
2150.0
2160.0
2181.0
2185.0
2190.0
2200.0
2230.0
2248.0
2270.0
2300.0
2360.0
2500.0
2570.0
2750.0
2808.0
2819.0
2890.0
3336.0
4525.0
300.0
302.0
305.0
306.0
307.0
312.0
316.0
317.0
320.0
324.0
326.0
327.0
328.0
331.0
338.0
344.0
347.0
348.0
350.0
356.0
360.0
366.0
369.0
370.0
374.0
380.0
382.0
386.0
388.0
392.0
396.0
400.0
404.0
407.0
409.0
410.0
411.0
414.0
417.0
420.0
421.0
422.0
423.0
426.0
427.0
430.0
435.0
441.0
445.0
450.0
452.0
456.0
457.0
461.0
465.0
468.0
472.0
480.0
489.0
493.0
250.0
251.0
254.0
255.0
260.0
263.0
266.0
269.0
272.0
274.0
276.0
278.0
281.0
282.0
283.0
284.0
285.0
287.0
289.0
291.0
295.0
296.0
298.0
500.0
501.0
508.0
516.0
520.0
525.0
529.0
534.0
539.0
542.0
545.0
550.0
553.0
555.0
560.0
570.0
575.0
580.0
583.0
586.0
589.0
592.0
597.0
800.0
815.0
830.0
850.0
857.0
870.0
876.0
900.0
904.0
908.0
913.0
935.0
950.0
960.0
973.0
980.0
995.0
600.0
605.0
610.0
617.0
626.0
635.0
638.0
648.0
650.0
656.0
660.0
665.0
670.0
676.0
685.0
692.0
695.0
700.0
707.0
708.0
720.0
729.0
736.0
743.0
750.0
755.0
760.0
764.0
770.0
785.0
128.0
128.5
129.0
131.0
133.0
135.0
137.0
138.0
140.0
141.0
143.0
144.0
145.0
149.0
149.5
150.0
153.0
154.0
157.0
159.0
160.0
162.0
164.0
166.0
167.0
170.0
172.0
175.0
177.0
180.0

High-Temperature Conveyor and Low-Load Power Transmission Belt
Feature: This belt, which uses highly heat-resistant rubber and seamless woven fabric, is applied to heat-resistant
conveyance and low-load power transmission.
Use: Conveying silver-halide sensitized paper, high-temperature pinching conveyance, etc.
Cross Section
Series
[Fig.18] Structure of H50-LIF Type [Fig.19] Structure of H50-SIF Type
Polished
surface
Glossy
surface
Heat-resistant
seamless
woven fabric
Heat-resistant
seamless
woven fabric
Polished
surface
Woven fabric
surface
Types and Properties
Item
Structure
Available width (mm)
Standard thickness (mm)
Rubber material
Surface figure
Pulley surface figure
Weight
Minimum pulley diameter (mm)
Operating temperature range
Fig. 18 Fig. 19
Friction
coefficient
Breaking strength (N/mm width)
Standard elongation rate (%)
Axial load at the standard elongation
rate under stable conditions (N/mm width)
Top surface
Pulley surface
Standard Dimensional Tolerance
(1) Width (mm) (2)Thickness (mm)
Width Tolerance
5 or more and
less than 11
11 or more and
less than 21
21 or more and
less than 101
101 or more
Thickness Tolerance
1.0 or more
0.8 or more and
less than 1.0
(3) H50 Type: List of Inner Peripheral Lengths (mm)
350 or more and less than 500
Tolerance: ± 3 mm
500 or more and less than 700
Tolerance: ± 4 mm
700 or more and
less than 900
Tolerance: ± 4.5 mm
900 or more and
less than 1100
Tolerance: ± 5.5 mm
1100 or more
Tolerance: ± 0.5 %
Each inner peripheral length of H50-SIF Type shown in the list above is obtained when the impregnated surface is placed on the pulley side.
For the inner peripheral length obtained when the impregnated surface is placed in the opposite way, contact us.
If you wish to order a product with a size other than the standard, consult us.
SEB is built to order; the minimum order quantity is one lot. For details, contact our agencies or our sales representative.
White
fluorine-containing rubber
Polished surface
Glossy surface Woven fabric surface
Polished surface
1
2
3
4
5
6
7
8
9
10
11
12
13
0.06
0.10
0.3
0.5
1.0
1.5
H50
5to200 5to200
0.4to0.8 0.4to0.8
0.5to1.0 0.3to0.6
4.9 4.9
2.0 2.0
24.5 16.7
19 11
1.0 0.7
H50-LIF H50-SIF
15
20to 200
20 21
352.0
353.0
360.0
364.5
370.0
374.0
375.0
379.0
384.0
387.0
390.5
393.0
396.0
400.0
404.5
408.0
412.5
414.0
415.0
416.0
418.0
422.0
424.0
426.5
427.5
432.0
434.0
505.5
507.5
513.0
522.0
525.5
532.0
537.0
539.5
545.0
548.0
551.0
555.5
560.0
567.0
575.5
581.0
586.5
589.0
592.5
596.0
598.5
603.0
607.0
610.0
617.5
622.5
633.5
1101.0
1112.5
1127.5
1148.0
1155.0
1176.0
1186.0
1203.5
1213.0
1218.5
1243.0
1264.0
1275.0
1284.0
1314.5
1322.5
1346.0
1361.0
1411.0
1431.0
1446.5
1463.0
1494.0
1510.0
1549.0
1564.0
700.0
703.5
708.0
715.0
715.5
727.5
737.5
744.0
750.5
758.0
763.0
769.0
772.0
778.5
793.0
808.0
823.5
839.0
858.5
877.5
885.5
908.0
918.0
922.5
945.0
960.0
971.0
983.0
990.0
1006.0
1010.5
1026.0
1037.5
1052.5
1062.0
1076.0
1082.0
1084.5
1093.0
440.0
446.0
450.0
455.0
459.5
466.5
470.0
473.0
477.0
485.0
495.5
498.0
642.0
645.5
656.0
658.0
664.0
668.5
672.5
677.0
683.0
692.0
15
20to 200
White
fluorine-containing rubber

Selecting Conditions
Selecting Procedures
1. Types of motors
2. Operating condition
(Load fluctuation)
3. Load inertia
4. Accelerating torque
5. Number of revolutions
(Speed)
6. Conveyance condition and method
7. Pulley diameter
8. Speed ratio
9. Center distance
1. Atmosphere (Oil, water, dust and ozone)
2. Ambient temperature (during operation and stop)
3. Ray (Ultraviolet rays)
1. Standard elongation rate
2. Tension under stable conditions
3. Rubber material
4. Tension member structure
5. Surface friction coefficient
6. Pitch line position
7. Minimum pulley diameter
8. Antistatic performance
9. Mass
1. Tension adjustment (Adjusting/fixing axis)
2. Pulley shape (Width and crown height)
3. Selecting belt top/bottom surfaces
Selecting Belt
Use Conditions Belt Performance
Use Environment Installation Conditions
Fully understand the purpose and conditions of the belt use for selecting the belt type. Then select the
belt width according to transmission/conveyance capacity and calculate the required elongation rate.
When selecting a belt, it is necessary to pay attention to not only the performance and characteristics of the
belt but also the use conditions and environment of the machine. Therefore, refer to the following items.
Selecting Type
Selecting Structure
When selecting the belt type, examine the use, use environment and the difficulty level of maintenance/inspection for
the machine using the belt. After fully understanding the features of each belt type, select the most suitable one.
Machine to be used
Purpose of use
Environmental conditions
Use conditions
Desired items
Type
Office machine Automatic equipment Power-saving equipment Wood working machine
Machine tool Packaging machinery Textile machine Printing/paper-making machine
Food machinery
Power transmission
Conveyance
Others
Oil Water Paper dust Dust Corrosion
Temperature Humidity Ozone Gas Chemicals
Inertia Conveyance condition Conveyance method Pulley diameter Speed ratio
Measurement instrument Medical equipment
Type of motor
Number of revolutions(Speed)
Operating condition
(Load fluctuation)
Cord Woven fabric Knit fabric
Surface condition Color
Center distance Others (Space limit, etc.)
Others
Display equipment
Tension member
structure
Seamless knit fabric
(Polyester, etc.)
N-SMV1/V2,
N-LBU, etc. G15, G30, etc. F50, F100, etc. XA, A, B, D, etc.
Conveyance
High
Low
Low
High
Low-load power transmission
and conveyance
Medium-load power transmission
and conveyance
Power transmission
Cord (Polyester, etc.)
Major types
Seamless woven fabric (Polyester, etc.)
Major application
Strength
Stretch properties
Code
Pinching a hard card between belts for conveyance
Pinching a paper sheet between belts for conveyance
High-precision power transmission
Used for high-precision power transmission requiring antistatic performance
Used when both surfaces of the belt are required to be driven
Used when high friction coefficient is required on the back surface
Determine the belt type and structure by examining the applications and the rubber properties mentioned in P 2 and 3.
Used for the extremely low-stretch belt that uses glass fiber cord as a tension member
Main Features and Application
Code starting with the letter “S”
(SB, SBC, SBU, etc.)
Code starting with the letter “L”
(LB, LBC, LBU, etc.)
Code starting with the letter “P”
(PB, PC, etc.)
Code ending with the letter “A”
(OBA, etc.)
1
1
1
2
1
3
1
4
22 23
PSS
OC
NR, WN

Design Materials
Transmitted Power Correction Factor Depending on Overload Fluctuation
Motor overload fluctuation
Environmental conditions
Environmental
conditions
Normal
AC wound motors, DC motors, etc.
Slightly poor
Poor
(Attachment of large quantities of oil, etc.)
149 % or less
Smooth
Nearly smooth
High impactt
Low impact
Medium impact
Operating conditions
199 % or less 249 % or less 250 % or less
Types of Motors Operating Conditions for
Machines to Be Used
1. Maximum output: Rated output of
149 % or less
AC wound motors, normal torque motors, etc.
2. Maximum output: Rated output of
150 – 199 %
AC wound motors, DC compound-wound motors,
normal torque synchronous motors, etc.
3. Maximum output: Rated output of
200 - 249 %
DC series-wound motors, high torque synchronous motors,
AC single-phase motors, line shaft motors, etc.
4. Maximum output: Rated output of
250 % or more
Liquid agitators, blowers, small machine tools,
low-load conveyors, etc.
1. Extremely smooth power transmission
Machine tools, line shaft motors, pumps, washing machines,
viscous material mixers, etc.
2. Nearly smooth power transmission
Compressors, generators, wood working machines, elevators,
rubber calenders, etc.
3. Power transmission with low impact
Centrifugal machines, bucket elevators, pulverizers, saw mills,
wood working machine, etc.
4. Power transmission with medium impact
Crusher mills, piston compressors, pumps, extruders, etc.
5. Power transmission with high impact
Belt Type Selection Diagram
Traction coefficient ( )
Angle of contact with pulley ( °)
Traction coefficient ( )
Angle of contact with pulley ( °)
Traction coefficient ( )
Angle of contact with pulley ( °)
Traction coefficient ( )
Belt width (mm)
Design tension P (N)
24 25
A
A
B
C
C
1.6 1.9 2.4 1.8 2.1 2.7 2.0 2.4 3.0 2.2 2.6 3.3
1.5 1.8 2.2 1.7 2.0 2.5 1.9 2.2 2.8 2.1 2.5 3.1
1.4 1.7 2.1 1.6 1.9 2.4 1.8 2.1 2.7 2.0 2.4 3.0
1.3 1.5 1.9 1.5 1.8 2.2 1.7 2.0 2.5 1.9 2.2 2.8
1.2
70 80 90 100 110 120 130
210 220 230 240 250 260 270
140 150 160 170 180 190 200
0.4532 0.4805 0.5069 0.5323 0.5569 0.5805 0.6032
0.6249 0.6457 0.6656 0.6846 0.7027 0.7200 0.7364
0.2396 0.2722 0.3042 0.3355 0.3662 0.3960 0.4250
1.4 1.8 1.4 1.7 2.1 1.6 1.9 2.4 1.8 2.1 2.7
ABC
BAC BAC B
DA XA B G15 G30 F50
H50
F100
300
200
100
80
60
50
40
20
10
8
5
4
3
2
1135
68 2K 3K 4K 5K 6K
10 K8K1K 10 20 30 40 50 60 80 300200100 400 600 800
42
6
30
N

Design Procedure 1
Calculating the effective tension applied to the belt
Calculating the effective tension from the transmitted power
(1) Calculate the belt speed (V).
Calculate the belt size (Inner peripheral length)
BL by using the elongation rate ( 0).
Select a belt with the nearest size according to the obtained
BL and the inner peripheral length.
Design Procedure 5
Design conditions
(1) Type of Machine:Cross flow fan
(2) Motor rated output:2.2 kw
(3) Number of revolutions of the original driving axle
(4) Speed ratio:1 to 2 deceleration
(5) Center distance
(6) Drive pulley diameter
(7) Belt width limit:30 mm or less
(8) Sudden start/stop:None
(9) Use conditions:Poor conditions not observed in indoor use
Selecting the inner peripheral length of the belt
Calculate the belt length (Lp) for installation.
Obtain the inner peripheral length for installation by using
the following formula or the Belt Inner Peripheral Length
Nomograph (Pages 30 and 31).
Design Procedure 2
Calculating the design tension
Obtain the transmitted power correction factor (K1) from the table at Page 24.
Then calculate the design tension (P).
Design Procedure 3
Selecting the belt type
Select the belt type from the Belt Type Selection Diagram (P. 25)
Design Procedure 1
Calculating the effective tension applied to the belt
(1) Calculate the belt speed.
Design Procedure 2
Obtaining the design tension
Obtain the transmitted power correction factor (K1)
from the table (Page 24).
Design Procedure 4
Calculating the traction coefficient ( )
Select the appropriate pulley diameter according to the
speed ratio, the pulley limit diameter, etc.
Design Procedure 5
Selecting the inner peripheral length of the belt
Obtain the belt length (Lp) for use by using the Belt Inner
Peripheral Length Nomograph (P. 30 and 31) or the
following formula.
Select the nearest size belt from the belt length list.
Selected belt size: B-PB 1700(mm)
When using the belt B-PB, the standard elongation rate (

0) is 1%;
calculate the belt size (Inner peripheral length BL) as follows:
Design Procedure 3
Selecting the belt type
Select the belt type “B-PB” from the Belt Type Selection Diagram
(Page 25)
Belt speed V
Drive pulley diameter d
Driven pulley diameter D
(2) Calculate the effective tension applied to the belt.
Effective tension Te (N)
Design Procedure 6
Selecting the belt width
Design Procedure 7
Calculating the required elongation rate of the belt
Calculate the centrifugal force per unit width (Tf) applied to the belt.
Then, calculate the belt width (W).
The belt length is set by 5 mm unit;
round the belt length obtained above to the nearest 5 mm.
Design Procedure 4
Calculating the traction coefficient ( )
Calculating the torque (Tr) caused by inertia
(1) Calculate the torque (Tr) caused by the moment of inertia (J).
Calculating the effective tension from the transmission torque (Tr)
(1) When the unit of torque is N∙m
(2) Calculate the effective tension (Te), where the transmitted power is kW.
Calculation for Selecting Belt Design Calculation

Circumference ratio
D
Drive pulley diameter (mm)
n
Number of revolutions of the drive pulley (r/min)
C 
Center distance
D 
Large pulley diameter (mm)
d
Small pulley diameter (mm)

Circumference ratio
D 
Drive pulley diameter (mm)
n 
Number of revolutions of the drive pulley (r/min)

Specific gravity (1.24 normally used)
V 
Belt speed (m/s)
t 
Belt thickness (mm)
P 
Design tension (N)
SL 
Axial load under stable conditions (N/mm)

Traction coefficient
J 
Moment of inertia (kgm2)
n1-n2  Difference in number of revolutions(r/min)
t 
Acceleration/deceleration time (S)
Pm’

Transmitted power (kW)
Pm
Transmitted power (kW)


Standard elongation rate (%)
D 
Large pulley diameter (mm)
d 
Small pulley diameter (mm)
c 
Center distance (mm)

Friction coefficient of the pulley surface
(0.4 normally used)

Contact angle on the pulley (rad)
m 
Mass (kg)

Acceleration/deceleration speed (m/s2)
GD2 
Flywheel effect (kgf∙m2)
n1-n2  Difference in number of revolutions (r/min)
t 
Acceleration/deceleration time (S)
(2’) Calculate the effective tension (Te), where the transmitted power is W.
(1’) Calculate the torque (Tr) caused by GD2.
(2) When the unit of torque is N∙mm
(2) Calculate the effective tension (Te) caused by the weight of the
conveyed object, during acceleration/deceleration.
Calculate the contact angle (rad).
Calculate the contact angle (deg).
Then, convert it into the contact angle (rad) as follows:
Calculate the traction coefficient ( ).
Obtain the traction coefficient ( ) by the following formula or the
proportional calculation (with the use of the table at P. 25).
Belt width W (mm) W = (Width set by 5 mm unit) ≥W’
Transmitted power correction factor (K1) = 2.0
Then, calculate the design tension P.
Design tension P (N)
Belt width
30mm
320.24N
Belt width(mm)
Calculate the contact angle (rad) of the belt on the pulley.
Or, first calculate the contact angle (deg) and
convert it into the contact angle (rad) as follows.
Obtain the traction coefficient ( ) by the following formula
or the proportional calculation
(with the use of the table at Page 25).
C 
Center distance (mm)
D 
Large pulley diameter (mm)
d 
Small pulley diameter (mm)

Calculate the contact angle (rad) of the belt on the pulley, from the pulley layout.
Select the appropriate pulley diameter from the speed ratio, the pulley limit diameter, etc.
and calculate the contact angle (rad) of the belt on the pulley.

Standard elongation rate (%)
Design tension P (N)
V= 60000
Dn
V (m/s)
Te= V
1000Pm
Te (N)
Te=
Te=
Te=
Lp=2C+
V=
Te=
Te=
Te=
Tf=0.002V²t(N/mm)
(mm)
2
Tr=
Tr=
Te=m

P=TeK1
V
Pm’
W’=

=



2Tr’
J(n1-n2)
GD²(n1-n2)
(D+d)
100+


100
4C
60000
V
Dn
1000Pm
(D-d)²
(SL-Tf)
P
+
9.55t
38.2t
2000Tr
D
D
Te (N)
Te (N)
Te (N)
Tr (N∙m)
Lp (mm)
BL (mm) BL=Lp
Tr (N∙m)
Te (N)
P (N)
26 27
Tr
Torque (N∙m)
D
Pulley outer diameter (mm)
Tr
Torque (N∙mm)
D
Pulley outer diameter (mm)

Friction coefficient of the pulley surface
(0.4 normally used)
Pm 
Transmitted power(kW)


(rad)=-2SINֿ¹∙
[
(deg)=180º-2SINֿ¹∙
]
D-d
2C
[]
D-d
2C


(rad)= (deg)
180


e

-1
e

+1

=

W’
W(%)
V= 60000
1501750
300-150
2500
2500
V=13.74(m/s)
(m/s)
13.74
160.12(N)
10002.2
P=TeK1
=160.122.0=320.24(N)





=-2SINֿ¹ ∙
[]
D-d
2C
=-2SINֿ¹ ∙=2.84(rad)
[]
(deg)=180º-2SINֿ¹∙
=162.7(deg)
[]
D-d
2C
(deg)=180º-2SINֿ¹∙
[]
300-150
==2.84(rad)
(rad)=
== =0.5139
(deg)
180
162.7
e-1
e+1
180
e0.42.84-1
e0.42.84+1
Lp=2C+
Lp=2500+
BL=Lp
BL=1718.1 =1701.1
=1718.1 (mm)
+
2
(D+d)
4C
(D-d)²
+
2
(300+150)
4500
(300-150)²
100
100+


100
100+1
300
300 400 600 800 1K 2K 3K 4K 5K 6K 8K 10K
200
200
100
100
80
80
60
60
30
30
20
20
10
10
8
8
6
6
5
5
4
4
3
3
2
2
11
40
40
50
50
XA A B D
F50G30G15
F100
&
H50
N

Design Procedure 6
Selecting the belt width
Design Procedure 7
Calculating the required elongation rate
of the belt ()
The following is the result of selection of the belt.
Calculate the centrifugal force per unit width (Tf)
applied to the belt.
Then, calculate the belt width (W).
The belt length is set by 5 mm unit;
select the belt width of 25 mm.
P Design tension (N)
SL Axial load under stable
conditions (N/mm)
Traction coefficient
Belt width W (mm)
Standard elongation
rate (%)
Calculate the required elongation rate ().
Belt type
: SE-B-PB
Belt size
: 25
w
mm1700
L
mm1.4
T
mm
Drive pulley
:

150mm
Driven pulley
:

300mm
Required belt
: 0.9%
elongation rate
Formulas and Conversion Table
Belt speed D 
Drive pulley diameter (mm)
n 
Number of revolutions of the drive pulley (r/min)
Pm :
Transmitted power (kW or W)
V :
Belt speed
Tr :
Torque (N∙m or N∙mm)
D :
Pulley diameter (mm)
m :
Mass (kg)
:
Acceleration/deceleration speed
n :
Number of revolutions
J :
Moment of inertia
n1-n2 :
Difference in number of revolutions
t :
Acceleration/deceleration time
GD²:
Flywheel effect
Te :
Effective tension
V :
Belt speed
Tr :
Torque
D 
Large pulley outer diameter (mm)
d :
Small pulley outer diameter (mm)
VN :
Power frequency
Po :
Number of motor poles
D 
Large pulley outer diameter (mm)
d :
Small pulley outer diameter (mm)
C :
Center distance (mm)
Item Formula RemarksSymbol Unit
Item Formula RemarksSymbol Unit
Number of revolutions
Belt installation length
(Open belt)
Center distance
Small pulley
contact angle
Traction coefficient
Effective tension
Torque
Transmitted power
Number of revolutions
of the motor
:
Friction coefficient
: (rad)
28 29
Tf=0.002V²t
Tf=0.0021.2413.74²1.4
=0.655(N/mm)
W’=
: W=25mm 21.7mm
MEMO
=21.7(mm)
=
P
(SL-Tf)
Specific gravity
(1.24 normally used)
VBelt speed (m/s)
t Belt thickness (mm)

320.24
(29.4-0.655)0.5139
=0.87(%)
21.7
25
=1
W’
W
=V=V
n
LP
C
n
Te
Tr
Pm
N
N∙m
W or kW
m/s
r/min
mm
mm
(deg)
(rad)
r/min
60000
Dn
n= D
60000V
b+ b²-8(D-d)²
n= Po
120VN
Lp 2C+
C
+
2
8
(D+d)
4C
(D-d)²
(deg)=180º-2SINֿ¹∙
(deg) 180-
[
[]
]
D-d
57.3(D-d)
2C
C
=e-1
e+1
(rad)=(deg) 180


b=2Lp-(D+d)
Te= 1000Pm(kW)
V
Te= Pm(W)
V
Te= 2000Tr(N∙m)
D
Te=
Te=m
2Tr(N∙m)
D
Tr=
Tr=
J(n1-n2)
GD²(n1-n2)
9.55t
38.2t
Tr= 9550Pm(kW)
n
Tr= 9.55Pm(W)
n
Pm(kW)= TeV
1000
Pm(kW)= Trn
9550
Pm(W)= Trn
9.55
Pm(W)=TeV

Calculating Belt Inner Peripheral Length
In the last step of designing the belt, obtain the inner peripheral length of the belt by using the Belt Inner
Peripheral Length Nomograph (Page 31).
C Center distance (mm)
D Large pulley diameter (mm)
d Small pulley diameter (mm)
Circumference ratio
Calculating the inner peripheral length of the belt
<Calculation>
Belt type
Standard elongation rate
Center distance
Small pulley diameter
Large pulley diameter
XA-PA
1%
150mm
30mm
50mm
First, add “Small pulley diameter” to “Large pulley diameter” as follows:
Select the nearest inner peripheral length (420 mm) from the List of Inner Peripheral Lengths.
When using this Belt Inner Peripheral Length Nomograph, it is hard to read fractional values and if the
speed ratio is high (1: 5 or more), a margin of error becomes large. In such a case, calculate the belt
inner peripheral length by the following formula.
When calculating the belt length for multi axial power transmission, inform us of the pulley diameter and
the coordinate; we will calculate the belt length.
Read the value of the inner peripheral length that is on the line connecting the center distance
(150 mm) and “d + D” (80 mm).
The above value is the approximate installation inner peripheral length.
Therefore obtain the required inner peripheral length by dividing the above value by elongation of the belt.
Installation inner peripheral length Lp (mm) Lp = Approx. 425 mm
Inner peripheral length of the belt BL (mm)
Installation inner peripheral length Lp (mm)
BL = Installation inner peripheral length
= 425 1.01
= 420.8mm
100
Elongation rate (%)
Belt Inner Peripheral Length Nomograph
Pulley(d+D)
(mm)
Belt installation inner
peripheral length
(mm)
Center
distance
(mm)
30 31
d+D=30+50=80
Lp=2C+ 2
(D+d)
4C
(D-d)²
+
d
C
D
800
700
600
500
400
300
200
100
150
1700
1600
1500
1400
1200
1300
1100
1000
900
380
400
420
440
460
480
500
240
260
280
300
360
320
340
60
80
100
120
140
160
180
200
220
20
40
1000
500
2500
2000
1500
4500
4000
3500
3000
800
900
1000
1100
1200
5000
700
600
600
500
500
400
400
300
200
100
425
200
300
100
700
800
20
40
60
80
100
120
140
160
180
200
80
2000
1900
1800
ø
ø

Flat Pulley
Recommended Pulley Shape
Unlike a V-belt, a flat belt, which runs on a pulley surface, has nothing to control its movement in the
width direction. Therefore, it is necessary to process the pulley to a shape of “crown” , where the center
diameter is larger than the diameters on both sides.
Due to the crown processing, difference in speed occurs on the surface of the revolving pulley. When the
pulley center diameter is larger, the belt stably runs on the pulley center where the belt speed is high.
When the belt and the pulley skid for any cause, speed difference does not occur and the crown effect is
not achieved. As a result, the belt deflects from the pulley.
Normally, the pulley is processed to make an arch (crown). (When the pulley is wider, it may be
processed to make a trapezoidal shape.)
As a curvature radius becomes larger, the belt tends to run stably. On the other hand, as the curvature
radius becomes smaller, the stress distribution of the belt becomes abnormal, causing shortening of the
belt life or decrease in transmitted power.
Select an appropriate crown of pulley depending on the type, width and use of the belt.
The crown height for power transmission and large-width conveyance and the recommended
curvature radius mentioned above, which are obtained from performances and experiments, are not
the specified values but the reference values.
If the pulley width is larger (50 mm or more) in case of pinching conveyance, the curvature radius
may become too small to fit the belt. (In such a case, consult us.)
Use an abrasion-resistant belt with the running surface finish of 1.5 to 6S. When using an
aluminum pulley, treat its surface with hard alumite, etc. to prevent abrasion.
Normally, the crown becomes more effective as it becomes higher. However, if the crown becomes
excessively high, the belt may not fit the crown, resulting in lack of transmission capacity and worse
running conditions.
1. Pulley Width
Make the pulley width larger than the belt width.
Obtain the pulley width by the following formula.
2. Crown Shape
Select an appropriate crown shape depending on the use and the pulley width.
Pulley width
Belt width
For power transmission
For pinching conveyance
For large-width conveyance
Pulley width
Crown height
Pulley diameter
Curvature radius
Belt width
Calculating the curvature radius
Recommended
curvature radius
Standard Crown Height for Power Transmission and Large-Width Conveyance
Pulley diameter (D) ø 100 or more
Crown
height
(hc)
Standard
Upper limit
Remarks
Do not attach flanges to the pulley.
CAUTION
When the flanges are attached to the pulley,
the belt gets caught up on them in most cases,
resulting in fatal damage to the belt.
32 33
bp 1.15b+2 (mm)
bp
bp
bp
b/3
(mm)
No edge
hc
hc
hc
rc
rc
D
D
D
bp :
bp :
hc :
D :
b :
rc :
b :
12
8hc
rc= bp²
0.10 0.12 0.13 0.14 0.17 0.20 0.24
0.400.320.280.220.200.180.16
D0.003
D0.005
ø80
ø60
ø50
ø30
ø20
ø10
ø5
:50~100mm
hc=rc- rc²-bp
2
( )²

For Correct Use
Precautions for use
The flat belt is a friction transmission belt. For power transmission, the belt requires an appropriate
initial tension (installation tension). Excessively low installation tension on the belt may cause
skidding and deflection; excessively low tension may cause shortening of the belt life and damage to
the bearing. Select an appropriate belt depending on the load and use and apply an appropriate
tension to the belt.
Sonic tensiometer
Previously, we have applied installation tensions to the
belts from our experience. As a result, the tension
values varied widely. As a result, such an inappropriate
installation tension was one of the causes of the
mechanical troubles.
The sonic tensiometer shows the accurate tension value
by calculating the natural vibration frequency
proportional to the tension of the belt span.
Installation Tension Tension Mechanism
Belt Surface
Recommended Elongation Rate
Others
Measuring the installation tension
Tension Mark System
Put tension marks on two locations of the belt under
no-tension condition. While measuring the distance
between the tension marks, stretch the belt to obtain the
specified elongation rate. Rotate the belt once or twice
to stretch it uniformly and check the tension marks.
Sonic Tensiometer U-507
Elongation rate:1.0 %
Tension Mechanism
Tension pulley Adjust pulley
Belt Series
Standard
elongation
rate
Elongation
rate range
As a rule, a tension pulley or an adjusting gap is required to apply tension
to the belt. The approximate adjusting gap is ± (Belt length x 0.01).
Highly stretchable; you can easily attach this belt in a complicated layout
without a tension mechanism.
As a pulley surface, use a surface with higher belt friction coefficient.
*[Example] SBU Type: Use a polished surface as a pulley surface.
LBU Type: Use a glossy surface as a pulley surface.
Package SEB in a polyethylene bag used for shipping and store it in a cool dark place free from
direct sunlight. Lightly wipe the belt with waste cloth impregnated with low-volatile alcohol. Then
wipe it with dry waste cloth.
Normally, you can use the belt in a layout with the fixed center distance.
Due to tolerance, however, the load applied to the bearing may become
large. It is recommended to set the adjusting gap.
Suitable for the layout where the center distance is fixed; the tension mechanism is not needed.
Note: When attaching the belt with the center distance fixed, choose the standard elongation rate or the medium value of the
elongation rate range to select the belt type. Set tolerance of the inner peripheral length within the elongation rate range.
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303
300
XA, A, B, D, GS
F50, F100
G15, G30
XA, A, B, D GS F50, F100 G15, G30 N
1.0% 0.3% 2.0% 2.0% 5.0%
0.5 to 1.0% 0.2 to 0.4% 1.0 to 3.0% 1.0 to 4.0% 3.0 to 7.0%
N

Measures against the Following Problems
Troubleshooting
Power Transmission
Complicated Layout (Pinching conveyance, etc.)
Failure
The belt comes
off the pulley.
The bearings are excessively
heated.
Belt deflection
The belt breaks
The specified speed is not
achieved.
Failure Diagnosis Troubleshooting
The belt deviates at start-up and
then returns to normal operation.
The starting torque is too high; further tighten the belt
if possible.
Change the belt type to a high-strength one.
Lower the starting load.
The load is higher, compared with the belt effective
tension; further tighten the belt if possible.
Change the belt type to a high-strength one.
Lower the starting load.
When the belt is stretched beyond the specified
elongation rate, lower the rate.
When the belt width is too large compared with the
load, lower the width.
Correct the pulley shape.
Check that the belt does not bend locally.
Remove foreign mater from the belt if any.
The vibration frequency of the machine resonates with
that of the natural vibration frequency of the belt;
change the belt tension.
Check that the belt is not excessively stretched for
installation or the belt edge is not damaged by the
flame edge.
Check that the pulley shape is correct.
Remove the pulley flange.
Check that the gap between the pulleys is not small
and the pulleys do not squeeze together.
Adjust parallelism of the pulleys.
Check that the pulley shaft does not bend.
Check that the belt is stretched at the specified
elongation rate.
Select appropriate bearings according to the bearing
allowable load and revolution speed
Check for shortage of lubricating oil.
Measure the pulley diameter. When the speed ratio is
large, add the pitch line position to the pulley
diameter.
Measure revolution speed again.
Correct pulley parallelism.
Check that the pulley does not bend.
Check that the belt is stretched at the specified
elongation rate.
Correct the pulley shape.
The belt comes off even when the
load is low.
Check for excessive tension of the
belt.
The belt tension is appropriate.
The belt deflects to the pulley axis.
(Snaking)
The belt breaks at the early stage
of operation.
The belt moves to one side and
then breaks. Generally, the belt
breaks when it winds around the
pulley or contacts the frame.
Investigate the cause.
The belt deflects perpendicularly to
the direction of the pulley axis.
(Waving)
Even when further tightening the
belt, the revolution speed does not
increase.
Normal when the load is low; the
belt comes off when the load
becomes high.
●Keep fire away.
●When storing and shipping the belts, do not distort them excessively.
●Store the belts in a well-ventilated, low-humidity place free from direct sunlight.
The recommended storage temperature is – 10 to + 30℃.
●Store the belts in the shipping packages.
󱫀Function and Performance
DANGER
DANGER
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!
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●Do not use the belt as hoisting or towing equipment.
●Do not use the belt beyond the acceptable ranges specified in the Catalogue.
●When fire and malfunction of the control device are expected due to static electricity generating in the
transmission device, use an antistatic belt. Set a neutralization apparatus in the transmission device.
●Do not use the belt for conveying unpackaged food.
󱫂Storage and Shipping
●Be sure to put a safety cover over the rotating part including the belt; hair, gloves or clothes may get
caught in the belt pulley.
●Before maintenance, inspection or replacement, be sure to turn off the switch and check that the
machine stops.
●When cleaning the belt, do not use chemicals harmful to humans.
●After replacing the belt with a new one, perform a test operation to adjust elongation rate and traveling of the belt.
●When abnormal noise, snaking, deviation, slipping, etc. occur, stop the belt immediately for inspection.
●Do not leave the belts near fire.
●Do not burn used belts; harmful gasses may be generated.
●Lawfully dispose of the used belts as industrial waste.
󱫄Installation and Daily Use
!
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󱫆Handling Used Belts
For Safe Use of Products
※Before use, carefully read and follow the safety precautions below.
Symbol and Signal Word Severity of Risk
Indicates matters that may lead to imminent risk of death or
serious injury if ignored or incorrectly handled.
Indicates matters that may lead to injury and physical damage
if ignored or incorrectly handled.
Indicates matters that may lead to death or serious injury
if ignored or incorrectly handled.
For safe use, this instruction manual and the product use various symbols and signal words.
After fully understanding their meanings, read the safety precautions and follow the instructions.
■Improper use ignoring the symbols and the signal words may result in the following risks.
!
!
!
DANGER
WARNING
WARNING
WARNING
WARNING
WARNING
CAUTION
CAUTION
CAUTION
CAUTION
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