SMC Networks MY2 Series User manual

    
Series MY2
Mechanically Jointed Rodless Cylinder
ø16, ø25, ø40
1085
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1085
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Compact and low profile design
A complete reduction in height of the cylinder allows mounting in a narrow space.
The low profile design of the cylinder built with a high precision single or double
axis guide, provides same load capacity as the earlier Series MY1.
Three types of guide options to suit a variety of applications.
Mechanically Jointed Rodless Cylinder
Series MY2
Mechanically Jointed Rodless Cylinder
Series MY2
Increased load capacity
Bore size (mm)
200
100
016 25 40
Bore size (mm)
100
50
016 25 40
m 1
MY2
Single-axis Linear Guide
MY2
Double-axis Linear Guide
All 3 types have the same cylinder height and
actuator (cylinder).
The dynamic load mass has been increased with improved guide performance. (Compared to previous Series MY1.)
MY2
Cam Follower Guide
Available with long stroke
MY2C
MY1C
C
C
HH
HT HT
Higher rigidity of the diagonal cam
follower and change in the
mounting angle provides improved
load and moment capacity.
M2
Bore size (mm)
Load mass (kg)
Load mass (kg)
Bore size (mm)
Allowable moment (N⋅m)
Allowable moment (N⋅m)
MY2HT
MY2H
MY1H
MY2HT
MY2H
MY1H
MY2C
MY1C
MY2C
MY1C
Cam Follower Guide
Linear Guide
60
50
40
30
20
10
0
m3
M3
30
20
10
0
16 25 40 16 25 40
The new Series MY2C accommodates longer stroke up to 5000 mm.
Diagonal cam follower
Lateral cam follower
60
45
Diagonal cam follower
Lateral cam follower
1086
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1086
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ø40 / 58mm
ø25 / 37mmø16 / 28mm
Height reduction by 30%
Low profile achieved by placing the guide unit and cylinder body next to one another.
(dimension reduced by 12 mm to 26 mm)
(Compared to
previous Series MY1.)
Series ø16
28
40
ø25
37
54
ø40
58
84
(mm)
MY2C
MY2H (Single axis)
MY2HT (Double axis)
MY1C, MY1H
Stroke adjusting unit Slide table
Workpiece
Shock absorber
Through-hole mountingT-slot mounting
Top
Side
Improved mounting flexibility
Option
Two mounting styles
Auto switch mounting
on two sides
Standard with air cushion and
centralized piping
The low profile design allows mount-
ing of heavy-loaded shock absorber
(H unit) without interfering with the
workpiece.
Optional side support is available
(Series MY2C)
A side support prevents guide deflection for the
long stroke application.
Cylinder body
Guide unit
Slider
Workpiece Cylinder mounting bolt
Easy replacement of cylinder body
The cylinder can be replaced without
removing the workpiece
The cylinder can be detached by simply removing
the four mounting bolts, and pulling it off in the
direction of the arrows.
Series Variations
Model
Bore size
(mm)
16
25
40
Standard stroke (mm)
50 100 150 200 250 300 350 400 450 500 550 600 700 800 900 1000 1200 1400 1600 1800 2000
Max. available
stroke (mm)
Made to order
5000
(3000
for ø16)
1500
(1000
for ø16)
MY2C
Cam follower guide
MY2H
Linear guide/
Single axis
MY2HT
Linear guide/
Double axis
· Intermediate
strokes
(Standardized
with MY2C)
· Long strokes
· Helical insert
threads
· Holder
mounting
brackets
1087
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1087
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Selection Flow Chart
Series MY2
Model Selection 1
The following are the steps for selection of the series MY2 best suited to your application.
Standards for Tentative Model Selection
Cylinder
model
MY2C
MY2H
MY2HT
Cam follower guide
Linear guide type (Single axis)
Linear guide type (Double axis)
Standards for guide selection
Slide table accuracy approx. 0.05 mm Note 2)
Slide table accuracy 0.05 mm or less Note 2)
Slide table accuracy 0.05 mm or less Note 2)
Graphs for related
allowable values
Refer to page 1091.
Refer to page 1092.
Refer to page 1093.
M2: Rolling M1: Pitching
M3: Yawing
Guide type
Note 1) Please use the precision of each guide as a guideline for selection. Please contact SMC if warranty on
precision is required.
Note 2) Accuracy indicates displacement of the table (at stroke end) when 50% of the allowable moment shown in the
catalog is applied. (Reference value)
Operating Conditions
m: Load mass (kg)
V: Speed (mm/s)
P: Operating pressure (MPa)
Mounting orientation:
Accuracy:
Tentative Selection of Cylinder Model
MY2C: Cam follower guide type
MY2H: Linear guide type (Single axis)
MY2HT: Linear guide type (Double axis)
Load mass
m ≤mmax
Determination of
allowable moment
[
Σα
] ≤ 1
Examination of cushioning
mechanism at stroke end
L type
Stroke adjusting unit
Air cushion
H type
Stroke adjusting unit
External
cushioning
unit
Examination of auto switch
mounting (type)
Model
selected
Reexamine operating conditions.
Select larger cylinder size.
Change guide type.
Select larger cylinder size.
Change guide type.
Select larger cylinder size.
NO
NO
NONO NO NO
YES YES YESYES
YES
YES
Select a guide suitable
for the application.
∗
∗ When using an external cushioning unit, we recommend installing a suitable unit near
the load’s center of gravity.
It is possible to select all models of mechanically jointed rodless cylinder according to
the procedure indicated above.
Refer to the separate instruction manual for further explanation, and please consult with
SMC regarding any questions.
1088
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1088
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Types of Moment Applied on Rodless Cylinders
Multiple moments may be generated depending on the mounting orientation, load, and position of the center of gravity.
Coordinates and Moments z
y
M3: Yawing
xM2: Rolling
M1: Pitching
y
m2x g
M1
X
x
M2
Y
Static Moment
Dynamic Moment
M1
mnxg
M1E
FE
Z
υa
υa
Horizontal mounting Wall mounting
Vertical mounting
Ceiling mounting
Mounting orientation
Static load m
Horizontal
m1
Ceiling
m2
Wall
m3
Vertical
m4
Static moment
M1
M2
M3
m1xg xX
m1xg xY

m2xg xX
m2xg xY


m3xg xZ
m3xg xX
m4xg xZ

m4x g xY
Mounting
orientation
Dynamic
load F
E
Horizontal Ceiling Wall Vertical
Dynamic
moment
M1E
M2E
M3E
x υa x mnxg
x FExZ
Dynamic moment M2Edoes not occur.
x FExY
1
3
1.4
100
1
3
g: Gravitational acceleration
g: Gravitational acceleration, υa: Average speed
y
m1x g
M1
X
x
M2
Y
m3x g
x
M2
z
M3
X
Z
M3E
FE
M3
Y
mnx g
M1
Z
M3
zy
Y
m4xg
Note) m4is a mass movable by thrust. Use 0.3 to 0.7 times the thrust
(differs depending on the operating speed) as a guide for actual use.
Note) Regardless of the mounting orientation, dynamic
moment is calculated with the formulas above.
Note)
1089
Mechanically Jointed Rodless Cylinder Series MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
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Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1089
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Maximum Allowable Moment/Maximum Load Mass
Model
MY2H
MY2C
MY2HT
Bore size
(mm)
16
25
40
16
25
40
16
25
40
Maximum allowable moment (N⋅m)
M1
5
13
45
7
28
60
46
100
200
M2
4
14
33
6
26
50
55
120
220
M3
3.5
10
28
7
26
60
46
100
200
Maximum load mass (kg)
m1
18
35
68
15
32
62
20
38
80
m2
16
35
66
13
30
62
18
35
80
m3
14
30
57
13
30
62
18
35
80
Maximum Allowable Moment
Select the moment from within the range of
operating limits shown in the graphs. Note
that the maximum load mass value may
sometimes be exceeded even within the
operating limits shown in the graphs.
Therefore, also check the allowable load for
the selected conditions.
Maximum Load Mass
Select the load mass from within the range
of limits shown in the graphs. Note that the
maximum allowable moment value may
sometimes be exceeded even within the
operating limits shown in the graphs.
Therefore, also check the allowable
moment for the selected conditions.
Moment (N⋅m)
Load mass (kg)
<Calculation of guide load factor>
M1 = F1x L1
F1
L1
F2
L2
M2 = F2x L2
m2
L3
M3 = F3 x L3
F3
m3
m1
FE
ME
υ
m
L1
The above values are the maximum allowable values for moment and load. Refer to each graph regarding the maximum
allowable moment and maximum load mass for a particular piston speed.
1. Maximum load mass (1), static moment (2), and dynamic moment (3) (at the time of impact with
stopper) must be examined for the selection calculations.
∗ To evaluate, use υa (average speed) for (1) and (2), and υ (impact speed υ= 1.4υa) for (3).
Calculate m max for (1) from the maximum load mass graph (m1, m2, m3) and Mmax for (2) and (3) from the maximum
allowable moment graph (M1, M2, M3).
Sum of guide
load factors Σα =
Load mass [m]
Maximum load mass [m max]
Static moment [M] (1)
Allowable static moment [Mmax]
Dynamic moment [ME] (2)
Allowable dynamic moment [MEmax]
Note 1) Moment caused by the load, etc., with cylinder in resting condition.
Note 2) Moment caused by the impact load equivalent at the stroke end (at the time of impact with stopper).
Note 3) Depending on the shape of the workpiece, multiple moments may occur. When this happens, the sum of the load
factors (Σα) is the total of all such moments.
2. Reference formulas [Dynamic moment at impact]
Use the following formulas to calculate dynamic moment when taking stopper impact into consideration.
m
F
FE
υa
M
1.4
υ =1.4υa (mm/s) FE = υa⋅g⋅m Note 4)
100
1
∴ME= ⋅ FE ⋅ L1= 0.05υa m L1(N⋅m) Note 5)
3
Note 4) υa is a dimensionless coefficient for calculating impact force.
Note 5) Average load coefficient (= ):
This coefficient is for averaging the maximum load moment at
the time of stopper impact according to service life calculations.
3. Refer to pages 1096 and 1097 for detailed selection procedures.
υ
L1
ME
g
: Impact speed (mm/s)
: Distance to the load’s center of gravity (m)
: Dynamic moment (N⋅m)
: Gravitational acceleration (9.8 m/s2)
: Load mass (kg)
: Load (N)
: Load equivalent to impact (at impact with stopper) (N)
: Average speed (mm/s)
: Static moment (N⋅m)
1.4
100 1
3
++ 1
1090
Series MY2
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1090
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Moment/MY2C
MY2C/M1MY2C/M3
100 200 300 400500 1000 1500
MY2C/M2
100 200 300 400 500 1000 1500100 200 300 400 500 1000 1500
100 200 300 400500 1000 1500
MY2C/m1
100 200 300 400500 1000 1500
MY2C/m2
100 200 300 400500 1000 1500
MY2C/m3
Load Mass/MY2C
MY2C16
MY2C25
MY2C40
MY2C16
MY2C25
MY2C40
60
30
50
5
4
3
2
1
MY2C16
MY2C25
MY2C40
MY2C16
MY2C25
MY2C40
MY2C16
MY2C16
MY2C25
MY2C25
MY2C40
MY2C40
50
40
5
4
10
20
30
2
3
0.5
1
50
40
5
4
10
20
30
2
3
0.5
1
50
40
5
4
10
20
30
2
3
0.5
1
20
60
30
50
10
5
4
3
2
1
20
10
20
60
30
50
10
5
4
3
2
1
Piston speed mm/s Piston speed mm/s
Piston speed mm/s
Piston speed mm/s Piston speed mm/s
Piston speed mm/s
Moment N⋅m Moment N⋅m Moment N⋅m
Load mass kg Load mass kg Load mass kg
1091
Mechanically Jointed Rodless Cylinder Series MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1091
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Maximum Allowable Moment/Maximum Load Mass
MY2H/M1
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
10
5
4
3
2
20
30
50
60
1
MY2H/M3
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
10
5
4
3
2
20
30
50
60
1
MY2H/M2
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
10
5
4
3
2
20
30
50
60
1
50
60
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2H/m1
Piston speed mm/s
Load mass kg Load mass kg Load mass kg
60
50
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2H/m2
Piston speed mm/s
60
50
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2H/m3
Piston speed mm/s
Load Mass/MY2H (Single axis)
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H40
MY2H25
MY2H16
MY2H16
MY2H40
MY2H25
MY2H16
Moment/MY2H (Single axis)
1092
Series MY2
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1092
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Moment/MY2HT (Double axis)
MY2HT/M1
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
10
8
5
40
30
50
20
100
200
300
MY2HT/M3
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
40
50
30
20
10
8
100
200
300
5
MY2HT/M2
100 200 300 400 500 1000 1500
Piston speed mm/s
Moment N⋅m
40
30
20
10
8
50
100
200
300
5
50
80
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2HT/m1
Piston speed mm/s
Load mass kg Load mass kg Load mass kg
80
50
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2HT/m2
Piston speed mm/s
80
50
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2HT/m3
Piston speed mm/s
Load Mass/MY2HT (Double axis)
MY2HT40
MY2HT25
MY2HT16
MY2HT40
MY2HT25
MY2HT16
MY2HT40
MY2HT25
MY2HT16
MY2HT25
MY2HT25MY2HT25
MY2HT16
MY2HT16
MY2HT16
MY2HT40 MY2HT40MY2HT40
1093
Mechanically Jointed Rodless Cylinder Series MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
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Cushion Capacity
2000
1500
1000
500
400
300
200
100
3 5 10 20 30
MY2C40
50 100 200
2000
1500
1000
500
400
300
200
100
12345102030
40
50
MY2C25
m2 max.
m1 max.
m3 max.
m3 max.
m2 max.
m1 max.
m3 max.
MY2C16
100
200
300
400
500
1000
1500
2000
0.5 1 2 3 4 5 10 20 30
m1, m2 max.
60
m1 max.
m1 max.
2000
1500
1000
500
400
300
200
100
0.5 1 2345
Load mass kg
MY2H16 Horizontal impact: P = 0.5 MPa
2000
1500
1000
500
400
300
200
100
12345 1020 5040
Load mass kg
MY2H25 Horizontal impact: P = 0.5 MPa
10 3020
Cushion Selection Absorption Capacity of Air Cushion and Stroke Adjusting Units
<Air cushion>
Air cushions are a standard feature on mechani-
cally jointed rodless cylinders.
The air cushion mechanism is installed to avoid
excessive impact of the piston at the stroke end
during high speed operation. The air cushion
does not act to decelerate the piston near the
stroke end.
The ranges of load and speed that air cushions
can absorb are within the air cushion limit lines
shown in the graphs.
<Stroke adjusting unit with shock absorber>
Use this unit when operating with a load or speed
exceeding the air cushion limit line, or when
cushioning is necessary because the cylinder
stroke is outside of the effective air cushion
stroke range due to stroke adjustment.
L unit
Use this unit when cushioning is necessary out-
side of the effective air cushion range even if the
load and speed are within the air cushion limit
line, or when the cylinder is operated in a load
and speed range above the air cushion limit line
and below the L unit limit line.
H unit
Use this unit when the cylinder is operated in a
load and speed range above the L unit limit line
and below the H unit limit line.
Air Cushion Stroke (mm)
Bore size (mm)
16
25
40
Cushion stroke
12
15
24
m2, m3 max.
30
m2, m3 max.
Impact speed mm/s
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
2000
1500
1000
500
400
300
200
100
3 5 10 20 30
Load mass kg
MY2H40 Horizontal impact: P = 0.5 MPa
50 100 200
m1, m2, m3 max.
Impact speed mm/s
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
Impact speed mm/s
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
Air cushion
Air cushion
L unit
L unit
H unit
Air cushion
Air cushion
L unit
L unit
H unit
H unit
Air cushion
Air cushion
L unit
H unit
L unit
H unit
Caution
Calculation of Absorbed Energy for Stroke
Adjusting Unit with Shock Absorber
(N⋅m)
Horizontal Vertical
(downward)
Vertical
(upward)
Type of
impact
Kinetic energy
E1
Thrust energy
E2
Absorbed energy
E
 m⋅υ2
F⋅sF⋅s+ m⋅g⋅sF⋅s  m⋅g⋅s
E1
+ E2
Symbols
υ:Speed of impacting object (m/s) m: Mass of impacting object (kg)
F: Cylinder thrust (N) g: Gravitational acceleration (9.8 m/s
2
)
s: Shock absorber stroke (m)
Stroke Adjusting Unit Holding
Bolt Tightening Torque (N⋅m)
Bore size (mm)
16
25
40
Tightening torque
0.7
1.8
5.8
υ
ms
s
υms
υm
Do not use a shock absorber and air cushion to-
gether.
Note) The speed of the impacting object is measured at
the time of impact with the shock absorber.
1
2
1094
Series MY2
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1094
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m1 max.
m1 max.
2000
1500
1000
500
400
300
200
100
0.5 1 2345
MY2HT16
2000
1500
1000
500
400
300
200
100
12345 1020 5040
MY2HT25
10 3020
30
2000
1500
1000
500
400
300
200
100
3 5 10 20 30
MY2HT40
50 100 200
m2, m3 max.
m1, m2, m3 max.
m2, m3 max.
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
Load mass kg
Horizontal impact: P = 0.5 MPa
Impact speed mm/s
Air cushion
L unit
H unit
Air cushion
L unit
H unit
Air cushion
L unit
H unit
1095
Mechanically Jointed Rodless Cylinder Series MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1095
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

Series MY2
Model Selection 2
The following are the steps for selection of the series MY2 best suited to your application.
1
2
3
4
Calculation of Guide Load Factor
m3: Mass
m3max (from 1 of graph MY2H/m3) = 62 (kg) 
Load factor α1= m3/m3max = 7.525/62 = 0.12
M2: Moment
M2max (from 2 of graph MY2H/M2) = 50 (N⋅m) 
M2= m3x gx Z= 7.525 x 9.8 x 38.1 x 10-3= 2.81 (N⋅m)
Load factor α2= M2/M2max = 2.81/50 = 0.06
Operating Conditions
Load Blocking
Composite Center of Gravity Calculation
Calculation of Load Factor for Static Load
m3=Σmn
= 0.88 + 4.35 + 0.795 + 1.5 = 7.525 kg
X = x Σ (mnx xn)
= (0.88 x 65 + 4.35 x 150 + 0.795 x 150 + 1.5 x 150) = 140.1 mm
Y = x Σ (mnx yn)
= (0.88 x 0 + 4.35 x 0 + 0.795 x 111 + 1.5 x 210) = 53.6 mm
Z = x Σ (mnx zn)
= (0.88 x 5 + 4.35 x 42.5 + 0.795 x 42.5 + 1.5 x 42.5) = 38.1 mm
Y
ZX
Y
Wd: Workpiece (1500 g)
Wc: MHL2-16D1 (795 g)
Wa: Connection plate t =10 (880 g)
MY2H40G-500
Wb: MGGLB25-200 (4.35 kg) xy
z
x
y
z
x
y
z
x
y
z
Mounting Orientation
1. Horizontal mounting 2. Wall mounting
m3
M2
Z
m3
3. Ceiling mounting
P. 998 4. Vertical
mounting
P. 1042
P. 978
Wa
Wb
Wc
Wd
Workpiece
no.
Wn
0.88 kg
4.35 kg
0.795 kg
1.5 kg
Mass
m n
65 mm
150 mm
150 mm
150 mm
X-axis
Xn
0 mm
0 mm
111 mm
210 mm
Y-axis
Yn
Center of gravity
Z-axis
Zn
n = a, b, c, d
5 mm
42.5 mm
42.5 mm
42.5 mm
Workpiece Mass and Center of Gravity
5
42.5
65
150
111
210
Refer to the pages above for actual examples of
calculation for each orientation.
Cylinder  MY2H40G-500
Average operating speed υa  300 mm/s
Mounting orientation  Wall mounting
m3
1
m3
1
m3
1
7.525
1
7.525
1
7.525
1
1096
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1096
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

5
6
Calculation of Guide Load Factor
MY2H/M1
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
20
1
2
3
4
5
10
30
50
40
60
MY2H/M3
100 200 300 400500 1000 1500
Piston speed mm/s
Moment N⋅m
20
10
4
5
3
2
1
30
50
60
MY2H/M2
100 200 300400 500 1000 1500
Piston speed mm/s
Moment N⋅m
10
1
20
30
50
60
5
4
3
2
0.2
Load mass kg
50
60
40
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2H/m3
Piston speed mm/s
Load Mass Allowable Moment
Calculation of Load Factor for Dynamic Moment
Sum and Examination of Guide Load Factors
Equivalent load FEat impact
FE
= x υax gx m= x 300 x 9.8 x 7.525 = 309.7 (N)
M1E: Moment
M1Emax (from 4 of graph MY2H/M1where 1.4υa= 420 mm/s) = 42.9 (N·m) 
M1E = x FExZ= x 309.7 x 38.1 x 10-3= 3.93 (N·m)
Load factor α4= M1E/M1E max = 3.93/42.9 = 0.09
M3E: Moment
M3Emax (from 5 of graph MY2H/M3where 1.4υa= 420 mm/s) = 42.9 (N·m) 
M3E = x FEx Y= x 309.7 x 53.6 x 10-3= 5.53 (N·m)
Load factor α5= M3E/M3Emax = 5.53/42.9 = 0.13
1
3
1
3
1
3
1
3
1.4
100
1.4
100
M3
: Moment
M3max (from 3 of graph MY2H/M3) = 60 (N·m) 
M3 = m 3x gx X= 7.525 x 9.8 x 140.1 x 10-3= 10.33 (N·m)
Load factor
α 3= M3 / M3max = 10.33/60 = 0.17
m3
M3
X
M1E
M1
FE
Z
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
M3
FEY
M3E
Σα =α1+ α2+ α3+ α4+ α5=0.57 ≤1
The above calculation is within the allowable value and the selected model can be used.
Select a separate shock absorber.
In an actual calculation, when the sum of guide load factors Σα in the formula above is more than 1, consider decreas-
ing the speed, increasing the bore size, or changing the product series. Also, this calculation can be performed easily
with the “SMC Pneumatics CAD System”.
q
rwe
t
1097
Mechanically Jointed Rodless Cylinder Series MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1097
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

How to Order
MY2
Linear Guide Type
GLH 16 300
Thread type
Type
M thread
Rc
NPT
G
Bore size
ø16
ø25, ø40
Symbol
Nil
TN
TF
M9NW
H
HT
Linear guide, Single axis
Linear guide, Double axis
Guide type
16
25
40
16 mm
25 mm
40 mm
Bore size
G
Centralized piping type (Standard)
Piping
Stroke (mm)
Refer to “Standard Stroke” table.
Nil
S
n
2 pcs.
1 pc.
“n” pcs.
Number of
auto switches
Auto switch type
Nil
Without auto switch (Built-in magnet)
Nil
S
Both ends
One end
Stroke adjusting unit position
∗ “S” is applicable for stroke
adjusting units L and H.
Shock absorbers for L and H units
Nil
L
H
LH
Without adjusting unit
With low load shock absorber
With high load shock absorber
With one L unit and one H unit each
Lunit
Hunit
Lunit
Hunit
MY2H
MY2HT
25
RB1007
RB1412
RB1412
RB2015
40
RB1412
RB2015
RB2015
RB2725
16
RB0806
RB1007
RB1007
RB1412
Bore size
(mm)
Unit type
Model
Stroke adjusting unit
Applicable Auto Switch/Refer to pages 1263 to 1371 for the detailed specifications of auto switches.
A96V
A93V
A90V
M9NV
M9PV
M9BV
M9NWV
M9PWV
M9BWV
A96
A93
A90
M9N
M9P
M9B
M9NW
M9PW
M9BW
Type
Special function
3-wire
(NPN equiv.) —
24V
Grommet
24V
2-wire
3-wire(NPN)
3-wire(PNP)
2-wire
3-wire(NPN)
3-wire(PNP)
2-wire
Yes
No
Yes
Electrical
entry
Indicator
light
Load voltage
Wiring
(Output)
Pre-wired
connector Applicable load
DC AC
Auto switch model
Lead wire length (m)
0.5
(Nil)
5
(Z)
Grommet
—
100 V
100 Vor less
——
—
—
—






—
—
—






1
(M)
—
—
—















IC
circuit
—
IC
circuit
—
—
IC
circuit —
Relay,
PLC
Relay,
PLC
5V
12V
5V,12V
12V
5V,12V
12V
3
(L)









Solid state switch
Reed switch
Diagnostic
indication
2-color
indication
—
—
Made to Order
Refer to page
1106 for details.
∗Refer to the table below for the applicable
auto switch model.
Perpendicular
entry
In-line
entry
∗ Lead wire length symbols: 0.5 m················· Nil (Example) M9NW
1 m················· M (Example) M9NWM
3 m················· L (Example) M9NWL
5 m················· Z (Example) M9NWZ
∗ Solid state auto switches marked “” are produced upon receipt of order.
∗ Refer to page 1114 for applicable auto switches other than listed above.
∗ Refer to pages 1328 and 1329 for the details of auto switches with a pre-wired connector.
∗ Auto switches are shipped together (not assembled).
ø16, ø25, ø40
1105
Mechanically Jointed Rodless Cylinder
Linear Guide Type
Series MY2H/HT
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1105
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

Made to Order Specifications
(Refer to pages 1395 to 1565 for details.)
JIS Symbol Specification
Intermediate stroke (Using exclusive body)
Long stroke type
Stroke adjusting unit with adjusting bolt
Helical insert thread
Holder mounting bracket Ι
Holder mounting bracket ΙΙ
-XB10
-XB11
-XB20
-X168
-X416
-X417
Made to
Order
1106
Series MY2H/HT
+1.8
0
JIS Symbol
Specifications
16 25 40
Air
Double acting
0.1 to 0.8MPa
1.2MPa
5 to 60C
Air cushion, Shock absorber
Not required (Non-lube)
M5 x 0.8 Rc 1/8
Bore size (mm)
Unit symbol
Shock absorber
model
Stroke fine adjusting range (mm)
Stroke adjusting range
16 25 40
0 to  5.6 0 to  11.5 0 to  16
Bore size
(mm)
16
25, 40
Standard stroke (mm)
Maximum manufacturable
stroke (mm)
Rc 1/4
Bore size (mm)
Without stroke adjusting unit
16 25
100 to 1000 mm/s
100 to 1500 mm/s
40
L unit and H unitStroke adjusting unit
Model
Max. energy absorption (J)
Stroke absorption (mm)
Max. impact speed (mm/s)
Max. operating frequency (cycle/min)
Spring
force (N)
Operating temperature range (°C)
Extended
Compressed
5 to 60
Note 1)
Shock Absorber Specifications
Standard Stroke
Piston Speed
Stroke Adjusting Unit Specifications
Note 1) When exceeding the air cushion stroke ranges on page 1094, the piston speed should
be 100 to 200 mm/s.
Note 2) Use at a piston speed within the absorption capacity range. Refer to page 1094.
∗
Bore size (mm)
Fluid
Action
Operating pressure range
Proof pressure
Ambient and fluid temperature
Cushion
Lubrication
Stroke length tolerance
Port size
RB
2015
58.8
15
1500
25
8.34
20.50
RB
2725
147
25
1500
10
8.83
20.01
RB
0806
2.9
6
1500
80
1.96
4.22
RB
1007
5.9
7
1500
70
4.22
6.86
RB
1412
19.6
12
1500
45
6.86
15.98
MY2H
MY2HT
L
RB0806
RB1007
H
RB1007
RB1412
L
RB1007
RB1412
H
RB1412
RB2015
L
RB1412
RB2015
H
RB2015
RB2725
50, 100, 150, 200, 250, 300,
350, 400, 450, 500, 550, 600
1000
1500
∗ Strokes are manufacturable in 1 mm increments, up to the maximum stroke. However,
add “-XB10” to the end of the part number for non-standard strokes from 51 to 599. Also
when exceeding a 600 mm stroke, specify “-XB11” at the end of the model number.
Refer to the Made to Order Specifications on page 1405.
When exceeding the stroke fine adjusting range: Use the Made to Order
Specifications “ -X416 ” and “ -X417 ” . (Refer to page 1554 for details.)
∗ Fine stroke adjustment range is applicable for one side when mounted on a cylinder.
∗ The shock absorber service life is different from that of the MY2H/HT cylinder depending on
operating conditions. Refer to the Specific Product Precautions for the replacement period.
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1106
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

Option
Stroke Adjusting Unit No.
Lunit
Hunit
Lunit
Hunit
25 4016
Bore size
(mm)
Unit type
Left
Right
Left
Right
Left
Right
Left
Right
MY2H-A16L1
MY2H-A16L2
MY2H-A16H1
MY2H-A16H2
MY2HT-A16L1
MY2HT-A16L2
MY2HT-A16H1
MY2HT-A16H2
MY2H-A25L1
MY2H-A25L2
MY2H-A25H1
MY2H-A25H2
MY2HT-A25L1
MY2HT-A25L2
MY2HT-A25H1
MY2HT-A25H2
MY2H-A40L1
MY2H-A40L2
MY2H-A40H1
MY2H-A40H2
MY2HT-A40L1
MY2HT-A40L2
MY2HT-A40H1
MY2HT-A40H2
MY2H
MY2HT
Model
Note) Port positions are indicated as right and left from the front.
L unit H unit
Port
Port
Replacement Parts
16
25
40
MY2HT
MY2H
Mass
Bore size
(mm)
Model
16
25
40
16
25
40
0.86
2.35
6.79
1.27
3.70
10.05
0.22
0.42
0.76
0.31
0.61
1.13
Basic
mass
Additional
mass
per 50 mm
of stroke
Stroke adjusting unit mass
(per unit)
L unit H unit
0.03
0.06
0.16
0.04
0.10
0.27
0.04
0.09
0.22
0.08
0.18
0.46
Unit: kg
MY2H
MY2HT
Theoretical Output
Unit: N
16
25
40
40
98
251
60
147
377
80
196
502
100
245
628
120
294
754
140
343
879
160
392
1005
Operating pressure (MPa)
Bore
size
(mm)
Piston
area
(mm2)
200
490
1256
Note) Theoretical output (N) = Pressure (MPa) x Piston area (mm2)
MY2BH16G-
MY2BH25G-
MY2BH40G-
Stroke
Stroke
Stroke
Drive Unit (Cylinder) Replacement Part No.
Bore size (mm)
Model
Enter a symbol for port thread type inside .
Note) Order auto switches separately.
Calculation method
Example: MY2H25G-300L
Basic mass ······························ 2.35 kg
Additional mass ······················· 0.42/50 st
Mass of L unit ························· 0.06 kg
Cylinder stroke ·························· 300 st
2.35 + 0.42 x 300 ÷50 + 0.06 x 2 = Approx. 4.99 kg
0.2 0.3 0.4 0.5 0.6 0.7 0.8
Right side Left side
Form and mounting direction of stroke adjusting unit
Stroke adjusting unit
Example of LH attachment
1107
Series MY2H/HT
Mechanically Jointed Rodless Cylinder
Linear Guide Type
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1107
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

Construction
Single axis type: MY2H w@2t@1
@9
#8
e$2q$0#9!8uioy!0@8$6!1$1#0r
$5
!4 @5 !9 @3 !5 #1 @4 $4 !2 $3 #3 #5 #6 @0
#4#7!7#2@6@7
!3
!6
@3
MY2H16
MY2HT16
MY2H16
MY2HT16
No. Description
Magnet
Magnet
Seal magnet
Square nut
Square nut
Spring pin
Parallel pin
Hexagon socket head set screw
Hexagon socket head button bolt
Hexagon socket head button bolt
Hexagon socket head button bolt
Hexagon socket head button bolt
Hexagon socket head button bolt
Hexagon socket head button bolt
Hexagon socket head button bolt
Steel ball
Hexagon socket head taper plug
Hexagon socket head taper plug
Lubretainer
Material
—
—
Rubber magnet
Carbon steel
Carbon steel
Carbon tool steel
Stainless steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Chrome molybdenum steel
Spring steel
Carbon steel
Carbon steel
Special resin
No. Description
Cylinder tube
Body
Head cover WR
Head cover WL
Slide table
Piston yoke
Piston
Wear ring
Belt separator
Parallel pin
Cushion ring
Cushion needle
Belt clamp
Guide
End cover
Bearing
End plate
Stopper
Top cover
Material
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Special resin
Special resin
Stainless steel
Brass
Rolled steel
Special resin
—
Aluminum alloy
Special resin
Aluminum alloy
Carbon steel
Stainless steel
Note
Hard anodized
Anodized
Hard anodized
Hard anodized
Hard anodized
Hard anodized
Chromated
Nickel plated
Hard anodized
Hard anodized
Nickel plated after quenching
Component Parts
Note
Nickel plated
Nickel plated
Black zinc chromated
Black zinc chromated
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Nickel plated (ø16: Hexagon socket head plug)
Nickel plated (ø16: Hexagon socket head plug)
1
2
3
4
5
6
7
8
9
10
11
12
13
16
17
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
44
45
46
1108
Series MY2H/HT
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1108
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

#1
@7 @6 #2 #4
@4 @0
t@1 !6
Double axis type: MY2HT
No.
14
15
43
18
39
40
41
42
Qty.
1
1
2
2
2
2
2
4
Replacement Parts: Seal Kit
MY2H16G/MY2HT16G
Description
Seal belt
Dust seal band
O-ring
Scraper
Piston seal
Cushion seal
Tube gasket
O-ring
MY16-16A- Stroke
MY2H16-16B- Stroke
ø4 x ø1.8 x ø1.1
MY2B16-PS
MY2H25G/MY2HT25G
MY25-16A- Stroke
MY2H25-16B- Stroke
ø4 x ø1.8 x ø1.1
MY2B25-PS
MY2H40G/MY2HT40G
MY40-16A- Stroke
MY2H40-16B- Stroke
ø7.15 x ø3.75 x ø1.7
MY1B40-PS
∗ Seal kit includes !8, #9, $0, $1 and $2. Order the seal kit based on each bore
size.
∗ Seal kit includes a grease pack (10 g).
When !4 and !5 are shipped as single units, a grease pack (20 g) is included.
Order with the following part number when only the grease pack is needed.
Grease pack part number:GR-S-010 (10 g) , GR-S-020 (20 g)
1109
Series MY2H/HT
Mechanically Jointed Rodless Cylinder
Linear Guide Type
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1109
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

Single Axis Type: ø16, ø25, ø40
Model
MY2H16G
MY2H25G
MY2H40G
A
80
105
165
B
6.5
9.5
14
C
3.3
5.4
32.5
G
8.5
10.7
15.5
GB
17
19.5
31.5
H
28
37
58
J
M3 x 0.5
M5 x 0.8
M6 x 1
LA
70
100
158
LB
50.4
71.7
80.3
LD
3.4
5.5
9
L
80
110.8
180
MM
M4 x 0.7
M5 x 0.8
M6 x 1
LE
4
5
6
(LL)
40
49.6
75
LW
83
123
161
M
7
9
13
N
20
25
40
Model
MY2H16G
MY2H25G
MY2H40G
NV
3.4
5.5
6.6
NW
48.2
71.8
82.1
NX
5.8
8.5
10.5
NC
14
21.3
32.4
NE
27
35.5
56.5
NH
2
3
4
NT
3.5
5.3
6.5
P
M5
x 0.8
1/8
1/4
PA
40
60
100
PB
40
60
70
PP
5.3
8
16
Q
152
198
312
QQ
16.4
20.4
25.5
QW
40
60
57
R
5
5
8
RR
5.3
8.5
11
RW
40
50
53.5
SS
9.7
14
21.5
TT
12.5
19.3
35.4
U
4
5
6
UU
3
4.4
2
VV
10.5
15.3
29
X
6
7.5
9
XX
12
14
23
Y
5
5
8
Z
160
210
330
PF
3.5
5.5
17
PH
5.1
7.5
9.5
PD
2.8
6.6
8.5
PE
3.7
2.7
5
PC
7.2
8.2
5.5
PG
4
6
9
(mm)
LD
B
C
MY2H40G
“P” indicates cylinder supply ports. ∗ The plug for “P” MY2H16G is a hexagon socket head plug.
4 x øBdepth of counterbore C
øLD through hole
4 x MM, depth M
øLE H7 depth R
Long hole depth Y
2 x P
2 x P
(Hexagon socket head taper plug)
T-slot for body mounting
4 x 2 x square nut J
T-slot for body mounting
2 x P
(Hexagon socket head taper plug)
2 x P
(Hexagon socket head taper plug)
Cushion needle
A
Z+ stroke
(LL)
L
PG Q+ Stroke
PA
PB PC
PFQW
NW
LW
U
X
TT UU
RR SS
H
NE
PP QQ
G
N
1
1
VV
UU
XX SS
NX
NT
NH
NV
GB
NC
PH RW
LA
LB
PE
PD
Cylinder mounting center line
Workpiece mounting center line
Guide center line
Bore size Stroke
MY2H G
1110
Series MY2H/HT
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1110
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com

TT
E
14.4
17.5
25
EA
7
8.5
13
EC
6
9
13
EY
27
36
57
FA
12.5
19.3
17
h
4
5
6
S
40.8
46.7
67.3
T
6
7
12
TT
5.6 (Max. 11.2)
7.1 (Max. 18.6)
10 (Max. 26)
Shock absorber model
RB0806
RB1007
RB1412
W
16.5
25.8
38
Applicable cylinder
MY2H16
MY2H25
MY2H40
E
14.4
17.5
25
EA
7
8.5
13
EC
6
9
13
EY
27
36
57
FA
12.5
19.3
17
h

6
6
SD
6.7
17.7

S
46.7
67.3
73.2
T
7
12
15
TT
5.6 (Max. 11.2)
7.1 (Max. 18.6)
10 (Max. 26)
W
23.5
25.8
38
Shock absorber model
RB1007
RB1412
RB2015
Low load shock absorber
Heavy-loaded shock absorber
MY2H16
Stroke adjusting unit
Applicable cylinder
MY2H16
MY2H25
MY2H40
Shock absorber
(Shock absorber stroke)
Shock absorber
(Shock absorber stroke)
Stroke adjusting unit
Stroke adjusting unit
E
EA
h
ST
EY
EC
FA
W
E
EA
EY
EC
FA
W
ST
h
W
SDTT
L
Bore size Stroke
MY2H G
H
Bore size Stroke
MY2H G
1111
Series MY2H/HT
Mechanically Jointed Rodless Cylinder
Linear Guide Type
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1111
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com