Thomas Cut 250 User manual

Bulletin 4390-974250
Cut 250 Saw Use and
MaintenanceManual
Part Number:974250
Effective: September 1, 1999
FluidConnectors

Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OFTHE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL
INJURY AND PROPERTY DAMAGE.
This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product and/or system options for further investigation by
users having technical expertise. It is important that you analyze all aspects of your application and review the information concerning the product or system in the current product
catalog. Due to the variety of operating conditions and applications for these products or systems, the user, through its own analysis and testing, is solely responsible for making the
final selection of the products and systems and assuring that all performance, safety and warning requirements of the application are met.
The products described herein, including without limitation, product features, specifications, designs, availability and pricing, are subject to change by Parker Hannifin Corporation
and its subsidiaries at any time without notice.
WARNING
The items described in this document are hereby offered for sale by Parker Hannifin Corporation, its subsidiaries or its authorized distributors. This offer and its acceptance are
governed by the provisions stated in the "Offer of Sale".
Offer of Sale

1Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
CHAPTER 7______________________________________
Regulating the Machine ................................................... 7
7.1 – Saw head ................................................................ 7
7.2 – Vice ......................................................................... 7
7.3 – Regulating arm blockage ........................................ 7
7.4 – Changing the blade................................................. 7
7.5 – Changing the lubricating coolant pump .................. 7
CHAPTER 8______________________________________
Routine and Special Maintenance .................................. 7
8.1 – Daily maintenance .................................................. 7
8.2 – Weekly maintenance .............................................. 7
8.3 – Monthly maintenance ............................................. 7
8.4 – Six-monthly maintenance ....................................... 8
8.5 – Oils for lubricating coolant ...................................... 8
8.6 – Special maintenance .............................................. 8
CHAPTER 9______________________________________
Material Classification and Choice of Tool .................... 8
9.1 – Definition of materials ............................................. 8
9.2 – Choosing the blade................................................. 9
9.3 – Teeth pitch .............................................................. 9
9.4 – Cutting and advance speed.................................... 9
9.5 – Breaking in the blade .............................................. 9
9.6 – Type of blade........................................................... 9
Tooth shape ............................................................ 9
Tooth cutting angle ................................................. 9
Sharpening circular saws ..................................... 10
9.6.1 – Table of recommended cutting parameters.......... 10
9.6.2 – Table of cutting speed according to
blade diameter ...................................................... 11
CHAPTER 10_____________________________________
Machine Components .................................................... 12
10.1 – List of spare parts................................................. 12
CHAPTER 11_____________________________________
Wiring Diagrams ............................................................. 15
CHAPTER 12_____________________________________
Troubleshooting .............................................................. 17
12.1 – Blade and cut diagnosis ....................................... 17
12.2 – Electrical components diagnosis .......................... 19
CHAPTER 13_____________________________________
Noise Tests ...................................................................... 19
Plates and Labels ........................................................... 20
Offer of Sale .................................................................... 21
Contents ............................................................................ 1
Ordering Spare Parts ....................................................... 1
Guarantee .......................................................................... 1
Machine Certification and Identification Marking......... 2
CHAPTER 1______________________________________
Reference to Accident-Prevention Regulations............ 3
1.1 – Advice for the operator ........................................... 3
1.2 – Location of shields against accidental contact with
the tool .................................................................... 3
1.3 – Electrical equipment according to European
Standard "CENELEC EN 60 204-1" (1992)............ 3
1.4 – Emergencies according to European Standard
CENELEC EN 60 204-1" (1992)............................. 3
CHAPTER 2______________________________________
Recommendations and Advice for Use.......................... 3
2.1 – Recommendations and advice
for using the machine ............................................. 3
CHAPTER 3______________________________________
Technical Characteristics ................................................ 4
3.1 – Table of cutting capacity and technical details ....... 4
CHAPTER 4______________________________________
Machine Dimensions – Transport –
Installation – Dismantling................................................ 4
4.1 – Machine dimensions ............................................... 4
4.2 – Transport and handling of the machine .................. 4
4.3 – Minimum requirements for the premises
housing the machine .............................................. 5
4.4 – Anchoring the machine ........................................... 5
4.5 – Instructions for electrical connection ...................... 5
4.6 – Instructions for assembly of
the loose parts and accessories............................. 5
4.7 – Deactivating the machine ....................................... 5
CHAPTER 5______________________________________
Machine Functional Parts ................................................ 5
5.1 – Operating head ....................................................... 5
5.2 – Vice ......................................................................... 6
5.3 – Bed.......................................................................... 6
CHAPTER 6______________________________________
Description of the Operating Cycle ................................ 6
6.1 – Starting up and cutting cycle .................................. 6
Ordering Spare Parts
• When ordering spare parts you must state:
Machine model
Serial number
Part reference number
Withoutthesereferences
we will not supply thespareparts.
See point 10.1 – List of spare parts.
Guarantee
• The Company guarantees that the machine to which this
manual refers has been designed and built to comply with
safety regulations and that it has been tested for functional-
ity in the factory.
• The machine is guaranteed for 12 months: the guarantee
does not cover the electric motors, electric components,
pneumatic components or any damage due to dropping or
machine misuse, the failure to observe maintenance stan-
dards or bad handling by the operator.
Contents

2
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
Machine Certification and Identification Marking
MACHINE LABEL
CUT 250
SERIAL NUMBER
TYP
MODEL
YEAR OF MANUFACTURE
via Pasubio, 32 36033 ISOLA VIC. - ITALIA
Machine Certificaton and Identification

3Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
1Reference to Accident- Prevention Regulations
This machine has been built to comply with the national
and community accident-prevention regulations in force.
Improper use and/or tampering with the safety devices will
relieve the manufacturer of all responsibility.
1.1 — Advice for the operator
•Check that the voltage indicated on the plate, normally fixed
to the machine motor, is the same as the line voltage.
•Check the efficiency of your electric supply and grounding
system;connectthepowercableofthemachinetothe socket
and the ground lead (yellow-green in color) to the ground
system.
•When the tool head is in rest position (raised), the toothed
blade must be stationary.
•It is not recommended to operate saw without its shields
(these are all white, blue or grey in color).
•Always disconnect the power source before changing the
blade or carrying out any maintenance job, even in the case
of abnormal machine operation.
•It is not recommended to disconnect the “man present” de-
vice, known more correctly in the EEC as the “safety switch
with hold-down action”.
•Always wear eye protection.
•Never put your hands or arms into the cutting area while the
machine is operating.
•Do not move the machine while it is cutting.
•Do not wear loose clothing , gloves that are too big, brace-
lets, chains or any other object that could get caught in the
machine during operation;tie back long hair.
•Keep the area free of equipment, tools or any other object.
•Perform only one operation at a time and never have sev-
eral objects in your hands at the same time.
•All internal and/or external operations, maintenance or re-
pairs, should be performed in a well-lit area or where there
is sufficient light from extra sources so as to avoid the risk of
accidents.
1.2 — Location of shields against accidental
contact with the tool
•Grey metal shield screwed onto the saw head.
•Self-regulating mobile blue plastic shield, fitted coaxially with
the fixed shield.
1.3 — Electrical equipment according to
European Standard“CENELEC EN 60 204-1”
which assimilates,with some integrating
modifications,the publication “IEC 204-1
(1992)”
•The electrical equipment ensures protection against electric
shock as a result of direct or indirect contact.The active
parts of this equipment are housed in a box to which access
is limited by screws that can only be removed with a special
tool;the parts are fed with alternating current at low voltage
(24 V).The equipment is protected against splashes of wa-
ter and dirt.
•Protection of the system against short circuits is ensured by
means of fuses and grounding;in the event of motor over-
load, protection is provided by a thermal probe.
•In the event of a power cut, the specific start-up button must
be reset.
•The machine has been tested in conformity with point 20 of
EN 60204.
1.4 — Emergencies according to European
Standard “CENELEC EN 60 204-1 (1992)”
•In the event of incorrect operation or of danger conditions,
the machine may be stopped immediately by pressing the
red mushroom button.
NOTE:Resetting of machine operation after each emergency
stop is achieved by reactivating the specific restart
button.
2Recommendations and Advice for Use
2.1 — Recommendations and advice for using
the machine
•The machine has been designed to cut tubing with different
shapes and profiles.
•Only one operator is needed to use the machine.

4
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
•To obtain break-in of the machine it is advisable to start us-
ing it at intervals of about half an hour.This operation should
be repeated two or three times, after which the machine
may be used continuously.
•Before starting each cutting operation, ensure that the part
is firmly gripped in the vice and that the end is suitably sup-
ported.
•Do not use blades of a different size from those stated in the
machine specifications.
•If the blade jams in the tube, release the running button
immediately, switch off the machine, open the vice slowly,
remove the part and check that the blade or its teeth are not
broken.If they are broken, change the blade.
•Before carrying out any repairs on the machine, consult the
dealer or call Parker Tube Fittings Division.
3Technical Characteristics
3.1 —Table of cutting capacity
and technical details
Cutting
Capacity
90° 30 70 65 100 x 45
45° DX 25 60 55 65 x 150
•Three-phase el.motor for
2-speed blade rotation kW0.75 ÷ 0.95
•Single-phase el.motor for
1-speed blade rotation kW0.9
•Reduction gear in an oil bath Ratio=1:32
•Maximum blade diameter mm250
•Blade rotation speed rpm40 ÷ 80
•Vice opening mm105
•Machine weight kg80
4Machine Dimensions – Transport – Installation –
Dismantling
4.1 — Machine dimensions
4.2 —Transport and handling of the machine
If the machine has to be moved, use a fork-lift truck or sling it
with straps as illustrated.
800
940 410 360
770
1550 WITH PEDESTAL

5Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
4.3 — Minimum requirements for the premises
housing the machine
• Main voltage and frequency complying with the machine mo-
tor characteristics.
• Environment temperature from -10°C to +50°C.
• Relative humidity not over 90%.
4.4 — Anchoring the machine
• Position the machine base on a firm cement floor, maintain-
ing, at the rear, a minimum distance of 800 mm from the
wall; anchor it to the ground as shown in the diagram, using
screws and expansion plugs or tie rods sunk in cement, en-
suring that it is sitting level.
4.5 — Instructions for electrical connection
• The machine may not be provided with an electric plug.
1 – WIRING DIAGRAM FOR 5-WIRE SYSTEM WITH NEU-
TRAL FORTHREE-PHASE MACHINE - SOCKET FOR A
16A PLUG
2 – WIRING DIAGRAM FORTHE SINGLE-PHASE SYSTEM
SOCKET FOR A 16A PLUG
PEDESTALPROFILE
580
7070 440
270 290
560
AA
SEC. A - A
M8
12
4.6 — Instructions for assembly of the loose
parts and accessories
Attach the components supplied as indicated in the photo:
• part. 1 Screw the lever onto the head
• part. 2 Attach the bar holding rod
• part. 3 Attach the pedestal firmly onto the base
4.7 — Deactivating the machine
If the sawing machine is not to be used for a long period, it is
advisable to proceed as follows:
1) Detach the plug from the electric supply panel
2) Release the head return spring
3) Empty the coolant tank
4) Carefully clean and grease the machine
5) If necessary, cover the machine.
5Machine Functional Parts
5.1 — Operating head
• Machine part composed of the parts that transmit move-
ment (motor, reduction unit), the lubricating coolant pump
and the electrical components.
= L1
= L2
= PE
R = L1
S = L2
T = L3
PE = GND
N = NEUTRAL
2
1
3

6
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
5.2 — Vice
• System for gripping material during the cutting operation,
operated with handwheel.
Provided with an anti-burr device for holding the part that is
to be cut.
5.3 — Bed
• Support structure for the OPERATING HEAD (rotating arm
for gradual cutting, with respective blocking system), the
VICE, the BAR STOP, and the housing for the cutting cool-
ant TANK.
6Description of the Operating Cycle
6.1 — Starting up and cutting cycle
• Ensure that the machine is not in emergency stop condition;
if it is, release the red mushroom button (1).
• Select the cutting speed on the switch (3):
position 1 = 40 rpm
position 2 = 80 rpm
• Press the start/reset button (2): green light will go on.
• Place material to be cut in the vice (4) and clamp the part
into place by handwheel (5).
• Grip the handle (6) of the HEAD control arm and press the
button, checking that the blade is turning in the direction
indicated (if not, invert the two phase leads) and that suffi-
cient coolant is flowing.
• When starting to cut with a new blade, in order to safe-
guard its life and efficiency, the first two or three cuts
must be made while exerting a slight pressure on the
part, so that the time taken to cut is about double the
normal time (see below in the chapter on “Material classi-
fication and choice of blades” in the section on
Breaking
in the blade
).
• Press the red emergency button (1) when there are condi-
tions of danger or malfunctions in general, so as to stop
machine operation immediately.
32
1
5
6
4

7Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
7Regulating the Machine
7.1 — Saw head
• Does not require any adjustments.
7.2 — Vice
• Does not require any adjustments.
7.3 — Regulating arm blockage
• If there is blockage of the head arm in the desired position,
loosen the screw (1) on the lever, hold the bushing
(2) in position, turn the lever to the left and re-tighten the
screw.
Note: Before performing the following operations, the electric
power supply and the power cable must be completely
disconnected.
7.4 — Changing the blade
To change the blade:
• Release the guard and push it back.
• Place a piece of wood in the vice and lean the blade on it.
• Insert the special spanner provided and remove the screw
( 1 ), loosening it in a clockwise direction, it has a left-handed
thread, then slip off the flange that holds the blade.
1
2
1
• Attach the new blade, check the direction of the teeth, then
replace the flange, the screw and the guard.
7.5 — Changing the lubricating coolant pump
• Remove the lubrication tubing.
• Remove the fastening screws and replace the small pump,
being careful to keep the driving stem centred on the drive
shaft bearing.
8Routine and Special Maintenance
The maintenance jobs are listed below, divided into
daily, weekly, monthly and six-monthly intervals. If the
following operations are neglected, the result will be
premature wear of the machine and poor performance.
8.1 — Daily maintenance
• Clean the machine to remove accumulated shavings.
• Top off the level of lubricating coolant.
• Check the blade for wear.
• Lift the head into a high position to avoid yield stress on the
return spring.
• Check functionality of the guards and emergency stops.
8.2 — Weekly maintenance
• General cleaning of the machine to remove shavings, espe-
cially from the lubricant fluid tank.
• Clean the filter of the suction pump head and the suction
area.
• Clean and grease the screw and the sliding guide of the
vice.
• Clean the blade housing.
• Sharpen the blade.
8.3 — Monthly maintenance
• Check tightness of the screws on the motor, the pump, the
jaws and guards.
• Check that the guards are unbroken.
• Grease the head hinge pin.

8
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
12
8.4 — Six-monthly maintenance
• Change the oil in the reduction unit using oil type GEARCO
85W-140 by NATIONAL CHEMSERACH or MOBIL
GLYCOLE 30 or KLUBER SINTHESO 460 EP or an equiva-
lent oil, proceed as follows:
• Removethe connecting plug
from the electric box and
un-screw the head moving
lever.
• Drainthe old oilfrom the cap
at the side (1).
• Pour in new oil up to the
mark (1), through the lever
fixinghole, keepingthe head
in a horizontal position (2).
• Reassemble all the parts.
• Check continuity of the equi-
potential protection circuit.
8.5 — Oils for lubricating coolant
Considering the vast range of products on the market, the
user can choose the one most suited to his own requirements,
using as reference the type SHELL LUTEM OIL ECO.
The minimum percentage of oil diluted in water is 8 - 10 %.
8.6 — Special maintenance
Special maintenance operations can be carried out by skilled
personnel, or contact Parker TFD or distribution personnel.
9Material Classifiation and Choice of Tool
Since the aim is to obtain excellent cutting quality, the various
parameters such as
hardness of the material, shape and thick-
ness, transverse cutting section of the part to be cut, choice of
the type of cutting blade, cutting speed
and control of head
descent
, must be suitably combined.These specifications must
therefore be combined in a single operating condition accord-
ing to practical considerations and common sense, so as to
achieve optimum conditions.
We therefore advise you always to choose original spare
blades that guarantee superior quality and performance.
9.1 — Definition of materials
The following table lists the characteristics of the materials to
be cut.
TYPES OF STEEL CHARACTERISTICS
USE I
UNI D DIN F AF NOR GB SB USA AISI-SAE Hardness
BRINELL
HB
Hardness
ROCKWELL
HRB R=N/mm2
Construction
steels Fe360
Fe430
Fe510
St37
St44
St52
E24
E28
E36
----
43
50
----
----
----
116
148
180
67
80
88
360÷480
430÷560
510÷660
Carbon
steels
C20
C40
C50
C60
CK20
CK40
CK50
CK60
XC20
XC42H1
----
XC55
060 A 20
060 A 40
----
060 A 62
1020
1040
1050
1060
198
198
202
202
93
93
94
94
540÷690
700÷840
760÷900
830÷980
Spring steels 50CrV4
60SiCr8 50CrV4 60SiCr7 50CV4 ---- 735 A 50 ---- 6150 9262 207 224 95 98 1140÷1330 1220÷1400
Alloyed steels for
hardening and
tempering and for
nitriding
35CrMo4
39NiCrMo4
41CrAlMo7
34CrMo4
36CrNiMo4
41CrAlMo7
35CD4
39NCD4
40CADG12
708 A 37
----
905 M 39
4135
9840
----
220
228
232
98
99
100
780÷930
880÷1080
930÷1130
Alloyed
casehardening
steels
18NiCrMo7
20NiCrMo2
----
21NiCrMo2
20NCD7
20NCD2
En 325
805 H 20
4320
4315
232
224
100
98
760÷1030
690÷980
Steel for
bearings 100Cr6 100Cr6 100C6 534 A 99 52100 207 95 690÷980
Tool steel 52NiCrMoKU
C100KU
X210Cr13KU
58SiMo8KU
56NiCrMoV7
C100W1
X210Cr12
----
----
----
Z200C12
Y60SC7
----
BS 1
BD2 - BD3
----
----
S-1
D6 - D3
S5
244
212
252
244
102
96
103
102
800÷1030
710÷980
820÷1060
800÷1030
Stainless
steel
X12Cr13
X5CrNi1810
X8CrNi1910
X8CrNiMo1713
4001
4301
----
4401
----
Z5CN18.09
----
Z6CDN17.12
----
304 C 12
----
316 S 16
410
304
----
316
202
202
202
202
94
94
94
94
670÷885
590÷685
540÷685
490÷685
Copper alloys
Special brass
Bronze
Aluminium copper alloy G-CuAl11Fe4Ni4 UNI 5275
Special manganese/silicon brass G-CuZn36Si1Pb1 UNI5038
Manganese bronze SAE43 - SAE430
Phosphor bronze G-CuSn12 UNI 7013/2a
220
140
120
100
98
77
69
56,5
620÷685
375÷440
320÷410
265÷314
Cast iron Gray pig iron G25
Spheroidal graphite cast iron GS600
Malleable cast iron W40-05
212
232
222
96
100
98
245
600
420

9Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
9.2 — Choosing the blade
First of all, the pitch of the teeth must be chosen, according to
these criteria:
• Parts with a thin and/or variable section such as profiles,
pipes and plate, need close teeth, so that the number of
teeth used simultaneously in cutting is from 3 to 6;
• Parts with large transverse sections and solid sections need
widely spaced teeth to allow for the greater volume of the
shavings and better tooth penetration;
• Partsmade of softmaterialor plastic (lightalloys,mild bronze,
teflon, wood, etc.) also require widely spaced teeth.
9.3 — Teeth pitch
As already stated, this depends on the following factors:
• Hardness of the material
• Dimensions of the section
• Thickness of the wall
9.4 — Cutting and advance speed
The cutting speed (m/min) and the advance speed (cm2/min =
area travelled by the blade teeth when removing shavings) are
limited by the heat build up at the tips of the teeth.
• The cutting speed is subordinate to the resistance of the
material (R = N/mm2), to its hardness (HRC) and to the di-
mensions of the widest section.
• Too high an advance speed (= blade descent) tends to cause
the blade to deviate from the ideal cutting path, producing
non rectilinear cuts on both the vertical and the horizontal
plane.
9.5 — Breaking in the blade
When cutting for the first time, it is good practice to break in
the tool making a series of cuts at a low advance speed
(= 30-35 cm2/min on material of average dimensions with re-
spect to the cutting capacity and solid section of normal steel
with R = 410-510 N/mm2),
generously spraying the cutting area
with lubricating coolant.
S (MM) PICTH SHAPE SPEED
up to 2 4 - 6 B
shaped 2
2 ÷ 5 8 C
solid 2
5 ÷ 10 8 C
solid 1
over 10 8 C
solid 1
up to 20 8 C
solid 1
20 ÷ 50 10 C
solid 1
SS
S
9.6 —Type of blades
Blades differ in their constructive characteristics, such as:
• Tooth shape
• Tooth cutting angle
Tooth shape
The profile of the teeth depends on the size, shape and thick-
ness of the section to be cut, either straight or at an angle. It
may also vary according to the pitch, but not so distinctly as to
make this an element for classification.
• Fine teeth are to be chosen for cutting small sections with a
profiled shape and tubular sections with thin walls (2-5 mm
depending on the material).
• Large teeth are suitable for cutting medium and large solid
sections or fairly thick profiled or tubular sections (over 5
mm).
“A” toothing: “AW” toothing:
Normal fine toothing Fine toothing with
alternate side rake
“B” toothing: “BW” toothing:
Normal large toothing with Large toothing with
or without shaving breaking alternate side rake
incision
“C (HZ)” toothing: Added toothing:
Large toothing with roughing Blades made in this way
tooth with rake on both sides, are used for cutting non-
alternating with a finishing ferrous metals, such as
tooth without rake. The light alloys and plastics,
roughing tooth is 0.15- and in woodworking. The
0.30 mm higher. teeth are hard metal
(HM) plates brazed onto
the body of the blade;
there are various types
and shapes and, consid
ering the vastness of the
field.
Tooth cutting angle
Each tooth has two cutting angles:
•αα
αα
α: front rake angle
• γγ
γγ
γ: rear rake angle

10
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Parker Hannifin Corporation
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Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
Sharpening circular saws
The rake varies especially according to the type of material to
be cut.
T345678910 12 14 16
p1,3 1,6 2,1 2,5 2,9 3,4 3,8 4,2 5,1 5,9 7,2
d1,5 2 2,5 3 3,5 4 4,5 5 6 7 8
h = 0,2 mm h = 0,3 mm
9.7.1 — Recommended cutting parameters
Mild steel R = 350-500 N/mm2
Aluminium and alloys R = 300-300 N/mm2 Tubes and beams 0,025.D R = 300-600 N/mm2 Brass R = 200-400 N/mm2 Titanium and alloys R = 300-800 N/mm2 Tubes and beams 0,05. D R = 300-600 N/mm2 Alloyed brass R = 400-700 N/mm2 Heat-treated steel R = 950-1300 N/mm2
Extra-hard steel R = 950-1000 N/mm2 Hard steel R = 750-950 N/mm2
Semi-hard steel R = 500-700 N/mm2 Grey cast iron Aluminium and alloys R = 200-400 N/mm2 Copper R = 200-350 N/mm2 Phosphor bronze R = 400-600 N/mm2 Hard bronze R = 600-900 N/mm2
Austentic stainless steel R = 500-800 N/mm2 Martensiticstainless steel R = 500-800 N/mm2

11 Parker Hannifin Corporation
Tube Fittings Division
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FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
9.7.2 — Diagram of cutting speeds according to blade diameter
KEY
TTooth pitch in millimetres
Av mm/min Advance in millimetres per minute
Vt m/min Cutting speed in metres per minute
Az Tooth advance
Ng/min Number of revs per minute
ZNumber of teeth on the blade
pTooth depth
dDiameter of the tooth fillet cone distance
hTooth protrusion
gFront rake
aRear rake
N/mm Ultimate tensile stress
a-f Flat parts of the cutting edge
ØTube diameter or profile width
Vt m/min
n = g/min

12
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Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
1 Machine bed
2 Revolving arm
3 Revolving arm locking pin
4 Revolving arm locking bush
5 Revolving arm locking lever
6 Screw M8
7 Pin Ø 6
8 Countervice
9 Grain M6
10 Bar stop rod
11 Bar stop
12 Vice
13
14
15
16
17 Oiler Ø 5
18 Vice handwheel
19 Pin Ø 6
20 Vice thread
21
22
23 Burr-free plate
24 Seal filter support flange
25 Ring seeger Ø 42 I
26 Tank cover filter
27 Filter support flange
28 Screw M5
29 Washer
30 Coolant tap
31 Coolant tube
32 Screw M6
33 Tank filter
34 Screw M8
35 Nut M8
36 Hinge pin
37 Grain M6
38 Nut M6
39
40 Nut M16
41 Head lever
42 Head lever handgrip
43 Ring SM 30-40-7
44 Key 8x7x30
45 Blade shaft
REFERENCE N° DESCRIPTION REFERENCE N° DESCRIPTION
10 Machine Components
10.1 — List of spare parts
46 Blade
47 Blade shaft flange stakes
48 Blade shaft flange
49 Screw M12
50 Fixed guard
51 Grain M16
52 Coolant tube
53 Mobile guard
54 Ring seeger Ø 60 E
55 Screw M6
57 Mobile guard rod
58 Ring seeger Ø 10 E
59 Tie rod support pin
60 Tie rod support
61 Screw M8
62 Pin Ø 4
63 Worm wheel
64 Grain M8
65 Worm wheel retaining washer
66 Screw M12
67 Ring nut M17
68 Worm screw
69 Ring DPSM 25-47-7
70 Front flange
71 Stud bolt
72 Washer
73 Nut M16
74 Bearing 6025 2rs
75 Motor shaft (rotor)
76 Key
77 Motor housing and stator
78
79 Head gasket
80
82 Motor head
83 Motor rear flange
84 Fan
85 Fan cover
86 Screw M4
87 Bearing 609
88 Pump connexion box
89 Screw M5
90 Coolant pump
91 Screw M6
92 Oil level-drain plug
93 Return spring connection
94 Head return spring

13 Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual

14
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
98
96
97
99
100
95
105 106
102
101
103
104
PARTS CALLOUT
95 Auxiliary relay
96 Remote control switch
97 Fuse carrier
98 Transformer
99 Socket connector
100 Plug Connector
PARTS CALLOUT
101 Speed switch
102 Reset button
103 Emergency push button
104 Electric components box
105 Box cover
106 Box gasket

15 Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
11 Wiring Diagrams
CODE DESCRIPTION M1 Disk motor XP Soket XS Plug SA Switch
CODE DESCRIPTION FU1 Fusecartridge FU2 Fusecartridge TC1 Transformer SQ1 Microswitch
CODE DESCRIPTION SB1 Mushroombutton SB2 Luminousbutton HL Pilotlamp KA Auxiliary relay
CODE DESCRIPTION KM Remotecontrol switch ST1 Thermal probe C Condenser

16
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
CODE DESCRIPTION M1 Blademotor XP Soket XS Plug
CODE DESCRIPTION TC1 Transformer SQ1 Microswitch SB1 Mushroombutton
CODE DESCRIPTION SA Switch FU1 Fusecartridge FU2 Fusecartridge
CODE DESCRIPTION KM Remotecontrolswitch ST1 Thermal probe C Condenser
CODE DESCRIPTION SB2 Luminousbutton HL Pilotlamp KA Auxiliary relay

17 Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
12 Troubleshooting
This chapter lists the probable faults and malfunctions that could occur while the machine is being used and suggests possible
remedies for solving them.
The first paragraph provides diagnosis for TOOLS and CUTS, the second for ELECTRICAL COMPONENTS.
12.1 — Blade and cut diagnosis
PREMATURE WEAR Incorrectrunninginofthe blade
Incorrectcuttingspeed
Unsuitabletoothprofile
Wrongtoothpitch
Lowqualityblade
Insufficientlubricatingfluid
FAULTPROBABLE CAUSE REMEDY
TOOTH BREAKAGE Advancingtoo fast
Impropercuttingspeed
Impropertoothpitch
Lowqualityblade
Ineffectivegrippingofthepart in the vice.
Previously broken tooth left in the cut
Cuttingresumed on a previously made cut.
Insufficientlubricant
Accumulationof excess material on
theblade.
Decrease advance, exert less cutting pressure
Changebladespeedand/ordiameter.SeeChapter“Material
classification and choice of blades” andthe Table of
cuttingspeeds according to bladediameter. Choosea
suitableblade.
SeeChapter“Material classification and choice of
blades”.
Useabetter quality blade.
Checkthe gripping of the part.
Remove any excess pieces.
Makethecut elsewhere, turning the part.
Check the level of the liquid in the tank.Increase the flow of
lubricatingcoolant.Checkthat the hole and the outlet tubes
arenotblocked.
Checkthe blend of lubricating coolant and choose a better
qualityblade.
SeeChapter“Material classification and choice of blades”
intheparagraph on Running in the blade.
Changebladespeedand/ordiameter.SeeChapter“Material
classification and choice of blades”and the Table of
cuttingspeedsaccording to bladediameter.
Chooseasuitableblade.
SeeChapter “Material classification and choice of
blades”in the paragraph on Type of blades.
Chooseasuitableblade.
SeeChapter“Material classification and choice of blades”.
Useabetter quality blade.
Check the lubrication level.Increase the flow of lubricate
fluid, check that the hole and the fluid outlet tube are not
blocked.
CHIPPED BLADE Hardness, shape or flaws in the material
(oxides,inclusions,lack of homogeneity,
etc.)
Incorrectcuttingspeed
Incorrecttoothpitch
Vibration
Bladeincorrectlysharpened
Lowqualityblade
Incorrectemulsionofthelubricating
refrigerant
Reducethecutting pressure and/or the advance.
Changebladespeedand/ordiameter.SeeChapter“Material
classification and choice of blades”andthe Table of
cutting speeds according to blade diameter.
Chooseasuitableblade.
SeeChapter“Material classification and choice of
blades”.
Checkgrippingof the part.
Replace the blade with one that is more suitable and correctly
sharpened.
Useabetter quality blade.
Check the percentage of water and oil in the emulsion.

18
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250 Cut 250 Saw Use and Maintenance Manual
RIDGES ONTHE Blade diamenter incorrect and/or too
CUTTINGSURFACE large
Ineffective gripping of the part in the vice
Fast advance
Bladeteethareworn
Insufficientlubricating fluid
Teeth do not disperse shavings well
FAULT PROBABLE CAUSE REMEDY
BLADEVIBRATION Incorrect tooth pitch
Unsuitabletoothprofile
Ineffective gripping of the part in the vice
Dimensionsof the solid section too large
withrespectto the maximumadmissible
cuttingdimensions
Bladediameterincorrectand/or
toolarge
Chooseasuitableblade.
SeeChapter“Material classification and choice of
blades”.
Chooseasuitableblade.
SeeChapter“Material classification and choice of
blades” inthe paragraphon Type ofblades .
Checkthe gripping ofthepart.
Refer totheinstructions.
Decreasethebladediameter,adapting it to the dimensions of
the part to be cut.The cutting part of the blade must not be
too large for the shape of the part to be cut.
Decreasethebladediameter,adapting it to the dimensions of
the par to be cut.The cutting part of the blade must not be too
large for the shape of the part to be cut.
Checkthe gripping ofthepart.
Decrease advance.Exert less cutting pressure.
Sharpentheblade.
Check the level of the liquid in the tank.Increase the flow of
lubricant fluid.Checkthat the hole and the fluid outlet tube
arenotblocked.
Choose a blade with a larger tooth pitch that allows better
unloadingofshavingsand that holds more lubricatingfluid.
CRODICED CUTS Fast advance
Ineffective gripping of the part in the vice
Bladeheadnotstraight
Bladesidesdifferentlysharpened
Bladethinnerthanthecommercial
standard
Dirt on the grippingdevice
Decrease advance.Exert less cutting pressure.
Checkthe gripping of the part.
Adjustthehead.
Choose tool quality carefully in every detail as regards type
andconstruction characteristics.
Carefullyclean the layingand contactsurfaces.
BLADE STICKS IN
THE CUT Fast advance
Lowcutting speed
Wrongtoothpitch
Accumulationof material on the blade
Insufficientlubricating fluid
Decrease advance.Exert less cutting pressure.
Increasespeed.
Chooseasuitableblade.
See Chapter “Material classification and choice of blades.”
Checkthe blendoflubricatingcoolantand choose a better
qualityblade.
Check the level of the liquid in the tank.Increase the flow of
lubricating fluid.Checkthat the hole and the liquid outlet tube
arenotblocked.