Kitagawa SR1146 Instruction Manual
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HIGH SPEED ROTARY HYDRAULIC
CYLINDER OPEN CENTER
・This instruction manual is for production engineers and
maintenance personnel in charge of operation of this product.
When a beginner uses this product, receive instructions from
experienced personnel, the distributor or our company.
・Before installing, operating or maintaining this equipment,
carefully read this manual and the safety labels attached to
the equipment. Failure to follow these instructions and safety
precautions could result in serious injury, death, or property
damage.
・Store this manual near equipment for future reference.
・If any questions related to safety arise about this manual,
please confirm them with the distributor or our company.
INSTRUCTION MANUAL
SR type
Version 1.06 (2019.09.03)
Original instructions
DANGER
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Te l. +81-847-40-0561
Fax. +81-847-45-8911
Kitagawa Corporation
This manual provides detailed information about how to safely and correctly use the cylinder (SR type) for a lathe.
Before starting to use this cylinder, read this manual carefully and always follow the instructions and warnings in
"Important Safety Precautions" and "Precautions for Use" at beginning of the manual. Failure to follow these
precautions could result in a serious accident.
In this manual, precautions for handling that are considered especially important are classified and displayed as shown below
depending on the damage of risk including the seriousness of the harm that could result. Please sufficiently understand the
meanings of these terms and follow the instructions for safe operation.
Preface
Terms and Symbols Used for Safety Messages
This product is a hydraulic device to control the operation of power chuck installed on the lathes or rotary tables. For any
other applications, please contact us.
Our company will not assume responsibility for injury, death, damage, or loss resulting from not following the
instructions in this manual.
There are countless things that cannot or should not be done, and it is impossible to cover all of them in this manual.
Therefore, do not perform any actions unless they are specifically allowed in this manual. If any questions related to
safety arise about operation, control, inspection and maintenance which are not specified in this manual, please confirm
them with our company or distributor before performing them.
Liability and How to Use this Manual
The guarantee period of this product is 1 year after delivery.
Use the parts delivered by Kitagawa Corporation for all the parts including consumable parts. We will not assume
responsibility for injury, death, damage, or loss caused by usage of parts not manufactured by Kitagawa Corporation.
Additionally, if parts other than genuine parts manufactured by Kitagawa Corporation are used, this guarantee will be
completely invalid.
The chuck and cylinder from Kitagawa Corporation should be used together. If you must use a part not made by
Kitagawa, check with us or our distributor to be sure it is safe to do so. We will not be responsible for injury, death,
damage or loss caused by use of a chuck or cylinder made by another company unless this use has been approved by
Kitagawa or its distributor.
Guarantee and Limitation of Liability
The triangle is the safety alert symbol used to alert you to potential safety hazards that could result in injury or death.
Safety Alert Symbol
Indicates a hazardous situation which, if you not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if you not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if you not avoided,
could result in minor or moderate injury.
Indicates instructions which, if not avoided, could result in
damage to the equipment or a shortened work life.
DANGER
WARNING
CAUTION
NOTICE
Table of Contents
1.Structural Drawing and Parts List
1-1. Type display
1-2. Structural drawing
1-3. Scope of product
1-4. Parts list
2. Important Safety Precautions
3.Specifications
3-1. Specification table
4.Hydraulic Oil
5.Trial Operation
6.Maintenance and Inspection
6-1. Maintenance and inspection of cylinder
6-2. Maintenance and inspection of hydraulic unit
6-3. List of seals to use
7.Malfunction and Countermeasures
7-1. In the case of malfunction
7-2. Where to contact in the case of malfunction
8.Coolant Collector
8-1. Outline
8-2. Type and applicable cylinder
8-3. Attachment
8-4. Positional adjustment of proximity switch
8-5. Precautions
8-6. Parts list
For Machine Tool Manufacturers (Chapter 9)
9.Attachment
9-1. Outline drawing of attachment
9-2. Production and attachment of cylinder adapter
9-3. Production and attachment of draw pipe
9-4. Attachment of cylinder
9-5. Tightening torque of cylinder attaching bolt
9-6. Attachment of parts other than parts manufactured by Kitagawa Corporation
10.About Hydraulic Circuit Design
11.Other Information
11-1. About standards and orders
11-2. Information about markings of product
11-3. About disposal
…………………………………………………………… 3
……………………………………………………… 6
………………………………………………………………………………… 12
…………………………………………………………………………………… 13
……………………………………………………………………………… 14
……………………………………………………………… 15
………………………………………………………… 16
…………………………………………………………………………… 17
…………………………………………………………………………………… 20
…………………………………………………………… 27
…………………………………………………………………………… 29
Type display as shown below.
1-1 Type display
1-2 Structural drawing
Fig. 1
SR
1 . Structural Drawing and Parts List
1
Example
11
2
46
3
4
5
6
7
4th digit and after that are not displayed for the standard cylinders.
1. SR Abbreviated name of SR cylinders
2. 11 Nominal inside diameter of the cylinder
3. 46 Nominal thru-hole diameter
4~7 Columns for special specification for each destination of delivery
Pressure adjusting screw
Hydraulic pump
Pressure gauge
Manual switching valve
Support
SOL.
4
This instruction manual is for the cylinder part.
1-3 Scope of product
Fig. 2
・To prevent the work from flying, safe design, maintenance and erroneous action prevention of the hydraulic
system to maintain the gripping force of the chuck is extremely important. Thoroughly read the “Important
Safety Precautions” on and after page 6 in this manual.
・As for the chuck, follow the instruction manual for the chuck.
WARNING
Socket head cap screw
Socket head cap screw
Socket head cap screw
Socket head cap screw
Retaining ring S
Retaining ring H
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
Quantity
6or10or12
6
2
4
5
1
1
1
1
2
1
1
1
4
4
1-4 Parts list
16
24
29
26
25
11 15
30
21
18
1
20
17
2
28
8
10
19
5
4
6
23
13
14
12
27
3
22
7
9
Important safety precautions are summarized below. Please read this section before first
starting to use this product.
Turn off main power supply before attaching, inspecting or replacing cylinder,
and before adding oil.
For All Users
・The cylinder may start rotation suddenly,
and a part of the body or clothing may be
caught.
Close door before rotating spindle.
For All Users
・If the door is not closed, you may touch
the rotating chuck or the work may fly out,
which is very dangerous. (In general, the
safety interlock function which allows
rotation only when the door is the manual
mode or the test mode)
During spindle rotation, do not turn off hydraulic pump power supply and
do not operate switching valve.
For All Users
・Cutting off hydraulic pressure
causes a drop in the gripping
force which could result in the
work being released and flying
out.
・Operating the manual switching
valve or solenoid valve will lead to
a drop of hydraulic pressure.
2 . Important Safety Precautions
Failure to follow the safety precautions below will result in
serious injury or death.
DANGER
Main power supply
Lathe
OFF
OFF
ON
Lathe
Close
Work
Manual switching valve
Solenoid valve
Jaw closed
Jaw open
NO
ON
OFF
Do not allow the rotation speed of the chuck to exceed the maximum allowable
speed limit.
The input force of the chuck (piston thrust, pulling force of the draw pipe) must
not exceed the allowable maximum input force.
If you use the chuck with the inside diameter gripping, input (hydraulic pressure)
must be 1/2 or less of the allowable maximum input.
・If it's used at the low setting pressure and
the gripping force isn't enough against the
cutting torque or centrifugal force can lead
to breakage of the chuck, which is very
dangerous, as the work can be fly out.
・If it's used at the excessive setting pressure
can lead to breakage of the chuck, which is
very dangerous, as the chuck or work can
be damaged and fly out.
When you use SR cylinder, setting pressure should be changed depend on specification
for SR cylinder.
Failure to follow the safety precautions below will result in
serious injury or death.
DANGER
・If the rotation speed of the chuck exceeds
the rotation speed limit, this is very
dangerous as the chuck and work will fly
out.
・Input must match the specification of the
chuck.
・Adjust the hydraulic pressure to the cylinder
so that the input, which determines the
gripping force of the chuck, does not exceed.
・Excessive input force can lead to breakage
of the chuck, which is very dangerous, as the
chuck can work can be damaged and fly out.
・The chuck may break and the
chuck or work could fly out.
For All Users
For All Users
For All Users
For Machine Tool Manufactures
DOWN
Input (hydraulic pressure)
to be 1/2 or less
FLY OUT
WORK
Chuck
Cylinder
Draw pipe
Allowable maximum
input force or less
FLY OUT
WORK
PRESSURE
GAUGE
DOWN
UP
Change Setting Pressure
FLY OUT
DANGER
Important Safety Precautions
Be sure cover is attached to periphery of cylinder before
operating machine. (Refer to pages 20-21)
For All Users
・This will prevent the body or clothing from being caught in
the machine.
Prepare the covers that conform to the following standards.
・EN953
・EN ISO13857
・EN1088
For All Users
・If the torque is insufficient or excessive, the bolt will break,
which is dangerous as the cylinder or work will fly out.
・Fix the lathe spindle or the cylinder when you tighten
bolts. Your hand could slip and get injury when you work
without fixing the spindle.
・You must use a torque wrench for torque control.
Always tighten the bolts at the specified torque. Use the bolts attached to
the cylinder, and do not use bolts other than these.
(Refer to page 25)
Failure to follow the safety precautions below will result in
serious injury or death.
DANGER
Use of a chuck and cylinder that cannot be used together safely may cause
the cylinder to break at high pressure resulting in the chuck
and work flying out.
For All Users
・Check that the chuck and the cylinder are in the “safe combination” when using at high pressure with our company or the distributor.
Especially when the cylinder of our company and a high pressure chuck of other company are combined, confirmation is necessary.
・If one of the abnormal events shown below occurs during operation, immediately stop the machine and consult with our company or
the distributor.
・The work slips.
・Loss of accuracy.
・The work begins to chatter.
・The machine's vibration significantly increases.
・The gripping force does not rise even
if hydraulic pressure is raised.
Chuck
Cylinder
FLY OUT
WORK
Type
Bolt size
Tightening torque
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
M8
33 N・m
M10
73 N・m
M12
107 N・m
Cylinder adapter
Lathe
Tightening torque
T=F×L
=110×0.3
=33(N・m)
L=0.3(m)
F=110(N)
Specified torque for socket head cap screw
Tightening torque is moment of force when
you tighten a bolt. Tightening torque= F×L.
Torque wrenches
Failure to follow the safety precautions below will result in
serious injury or death.
DANGER
Provide sufficient strength for the draw pipe (Refer to pages 22-23).
Provide sufficient screw depth for the draw pipe.
Firmly tighten the draw pipe.
Apply adhesive to the thread part of the draw pipe
and screw it in at the specified torque.
・If the draw pipe break, the gripping force
is instantly lost and this is dangerous as
work will fly out.
・If the screw depth of the draw pipe is
insufficient, the screw will break and the
gripping force will be lost instantly, and
this is dangerous as work will fly out.
・If the draw pipe is unbalanced, excessive
vibration could occur breaking the screw
and resulting in the gripping force being
lost and the work flying out.
・When screwing the draw pipe, piston to
the end of the pressing side stroke.
・If the engagement of the screw of the
draw pipe is loose, vibration may occur
resulting in breakage of the screw. If the
screw breaks, the gripping force will be
lost instantly, which is dangerous as the
work will fly out.
・When the screw is loosened, the jaw
stroke of the chuck becomes shorter and
this is very dangerous as the work will fly
out.
For Machine Tool Manufactures
Use a solenoid valve with a circuit that retains the gripping position when no
current is carried.
For Machine Tool Manufactures
Type
Tightening torque
SR1675
SR1781
SR2010
340 N・m
360 N・m
450 N・m
Type
Tightening torque
SR1146
SR1453
SR1566
150 N・m
280 N・m
320 N・m
Piston
Cylinder
Back plate
Chuck
Draw pipe
Cylinder adapter
The gripping position must be retained.
relief valve
Lock valve
Cylinder
Loosening
Gripping
P
Solenoid valve
Lightening
= Blackout
Do not modify the cylinder.
For All Users
・Doing so may damage the cylinder and cause oil leakage which could result in a fire.
And if the hydraulic oil leaks, the gripping force of the chuck will lower and the work may fly out,
which is dangerous.
・Do not attach additional machining such as screws.
・Do not detach parts of the cylinder from the cylinder.
Do not rotate the cylinder without hydraulic pressure.
For All Users
・Doing so could cause seizing inside the cylinder, leading to a drop in the gripping force of the chuck.
This is dangerous as work will fly out.
Important Safety Precautions
Failure to follow the safety precautions below could result in
serious injury or death.
WARNING
Periodically add hydraulic oil.
Turn off power and use designated hydraulic oil.
(Refer to page 13)
For All Users
・If supplying of the hydraulic oil is insufficient, the
operation speed may lower and the thrust force will
become insufficient resulting in a drop in the
gripping force of the chuck, which is dangerous as
the work may fly out.
・Use abrasion resistant and deforming hydraulic oil.
Assemble piping after completely removing the dust inside the pipe.
Add a filter of 20μm or less into the pressure supplying line (P).
For All Users
・Failure to do so could cause oil leakage and may
result in a fire.
・Maintain the function of the incorporated lock valve
and relief valve, and prevent seizing due to foreign
matter.
・If the function of the lock valve lowers, this is
dangerous as the work will fly out when the
hydraulic pressure suddenly lowers due to blackout
or malfunction of the hydraulic pump, etc.
・If the function of the relief valve lowers, the volume
of the filled hydraulic oil changes causing an
increase in pressure, which is dangerous resulting
in malfunction.
・If seizing is caused by foreign matter, the gripping
force of the chuck will lower, which is dangerous as
the work will fly out.
Filtering
Precision
20μm or
less
OFF
VG32
ISO
ON
OFF
Do not operate the machine wearing
gloves, a necktie, and
other loose clothing
or jewelry.
Important Safety Precautions
Refer to page 26 in this manual when you attach the other than parts manufactured by
Kitagawa Corporation (a stopper to shorten stroke or spindle work stop, etc.) to the
cylinder. However, the personnel who designed those parts
must judge whether they are safe for the usage conditions.
・Doing so may damage the cylinder and cause oil leakage which could result in a fire.
And if the hydraulic oil leaks, the gripping force of the chuck will lower and the work may fly out,
which is dangerous.
Do not attach the cylinder vertically.
・It will cause oil leakage and may result in a fire.
Do not operate the machine after
drinking alcohol or
taking medication.
For All Users
For All Users
・Dangerous since these lead to operation mistakes
and misjudgment.
11
For Machine Tool Manufactures
Failure to follow the safety precautions below could result in
serious injury or death.
WARNING
For Machine Tool Manufactures
Alcohol
Medication
・Dangerous since it will be caught.
Part for stroke
restriction
Piston screw
Work
positioning
apparatus
Stopper
W
o
r
k
Stopper
3 . Specifications
Table 2
Thru-hole diameter
Piston stroke
Piston surface area
(pulling side)
Piston maximum
thrust force(pulling side)
Maximum operating
hydraulic pressure
Maximum
rotation speed
Mass
Moment of inertia
Drain amount
Balance quality
Storing temperature /
Operating temperature
mm
mm
cm
2
kN
MPa
min
-1
kg
kg・m
2
/min
Note 1) The drain amount is a value when the hydraulic pressure is 3.0 MPa, and the oil temperature is 50℃.
Note 2) How to obtain the piston thrust force
Note 3) When storing this product, the product should be subjected to the antirust treatment and stored in a place
free from wetting, condensation, or freeze.
G 6.3
-20~+50℃/-10~+40℃
Operating
Piston
thrust force
(kN)
Piston
Maximum
Thrust force
(kN)
Operating
hydraulic pressure(MPa) -0.25
Maximum operating
hydraulic pressure(MPa) -0.25
=
×
Type
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
46
16
76
28.6
4.0
6000
10.6
0.025
3.0
53
19
111
43.9
4.2
6000
12.8
0.042
3.9
66
22
120
45.0
4.0
5000
18.8
0.065
4.0
75
23
142
53.6
4.0
4500
22.6
0.082
4.3
81
25
156
58.7
4.0
4500
22.9
0.091
4.3
106
28
191
71.8
4.0
3500
34.4
0.191
6.0
4 . Hydraulic Oil
○To keep good operation of the cylinder, it is recommended to use hydraulic oil with a viscosity of 32cSt at 40℃. (ISO
VG32 equivalent product)
○Replace the hydraulic oil about once every 6 months.
○The characteristics of hydraulic oil influences the heating, drain amount and acting speed of the cylinder, therefore,
control it according to the instruction manual for the hydraulic unit.
・If high speed rotation is continued, the oil temperature will rise, which could rapidly a high temperature, it will
rapidly aggravate deterioration of the sealing materials and deterioration of the hydraulic oil. Use a cooler to keep
the oil temperature at 60℃ or lower.
留 意
・Turn off the power source and supply designated hydraulic oil. Insufficient oil supply decreases the acting speed,
causes thrust force insufficiency resulting in a drop in the chuck gripping force, which could allow the work to fly out.
Use abrasion resistant and deforming hydraulic oil. Add a filter of 20μm or less in the pressure supply line (P) to
maintain the function of the cylinder and to prevent seizing caused by foreign matter.
Safety information about hydraulic fluid and anti-rust oil
Applicable range
・Hydraulic fluid sealed in the product at the delivery.
・Antirust agent applied to the product at the delivery.
First aid measures
After inhalation: Remove victim to fresh air. If symptoms persist, call a physician.
After contact with skin: Wash off with mild cleaners and plenty of water. If symptoms persist, call a physician.
After contact with eyes: Rinse with plenty of water. If symptoms persist, call a physician.
After ingestion: If large amounts are swallowed, do not induce vomiting. Obtain medical attention.
・Please refer to each MSDS about the hydraulic fluid and the anti-rust oil which you prepared.
WARNING
NOTICE
※ Keep the back pressure extremely low in this case as well.
<Example>
Chuck open and close
Cooler
To cylinder A. B. port
Inside and outside diameter
gripping switching
Fig. 4
Read safety precautions starting on page 6 before performing trial operation.
(1) Check that the power voltage is at the specified voltage.
(2) Set the pressure adjusting handle to the lowest state during trial operation, and check the turning direction of the
pump in inching (shortly turn on and off the switch). When it is rotating in the reversed direction, change the
connection of 2 cables out of the 3 cables.
(3) As for the operating pressure for chucking, first lower to the lowest pressure, and then set to low pressure at
which the chucking action is possible (0.35-0.5MPa) to check the following.
○ Is it operating smoothly?
○ Is the operating direction correct? (Opening and closing direction of the chuck)
○ Is the operating stroke appropriate? (Jaw stroke of the chuck)
○ Is there any oil leakage with each piping?
If they are normal, gradually raise the operating pressure up to the rated pressure while checking the items
specified above.
At this point, check that the drainage is flowing smoothly.
(4) Rotate the lathe spindle by setting the rotation speed to the minimum. If there is no run-out of the cylinder or no
abnormalities in the support and piping, gradually raise the rotation speed.
If the rotation vibration is too excessive, run-out of the adapter must be inspected again.
(5) If the oil temperature is low (20-30℃) or less, run it in at about 1/3 of the maximum rotation speed.
<Treatment when the cylinder cannot be operated>
○Regardless of trial operation or normal operation, when the cylinder cannot be operated, try the operations specified
below.
1. When the lathe spindle is rotating, stop rotation.
2. Turn the pressure adjusting handle of the pressure regulation valve for the chuck setting pressure (cylinder setting
hydraulic pressure) at the hydraulic unit part, and raise the chuck setting pressure for about 0.5 MPa and repeat
switching over the operation selecting switch of the cylinder to check the operation of the cylinder.
3. If the operation inability still continues, raise the chuck setting pressure additionally (about 0.5 MPa at a time), and
repeat the operation in the same manner as item (2), to check the action of the cylinder. In this case, the limit of the
pressure raising is up to 30% increase of the maximum operating hydraulic pressure.
When the cylinder operation is recovered, bring back the preset chuck pressure to the normal level.
4. If the cylinder cannot be operated even after the chuck setting pressure is raised to the maximum and the operation
specified in the above item (3) is repeated several times, return to the chuck setting pressure, turn off the power
supply, cool down the temperature of the cylinder surface to be almost the same as the room temperature, and
then repeat the operations specified in the above items (2) and (3) to check the operation of the cylinder.
The cylinder can be cooled down more quickly by forcibly blowing air to the cylinder using an air gun, etc.
5. If the cylinder cannot be operated even after cooling down, loosen the draw nut on the chuck side and remove the
connection, and then check the operation of the cylinder.
<Usage>
This product is a hydraulic device to control the operation of power chuck installed on the lathes or rotary tables.
The piston moves forward and backward by supplying hydraulic pressure to the cylinder. By this, the linked jaws of the
power chuck move toward the closing side to grip the workpiece, so that the workpiece is clamped during the
machining. After the machining, the jaws move toward the open side to allow the workpiece to be removed.
5 . Trial Operation
・When the ambient temperature of the cylinder suddenly rises, for example, thermal effect is received from
heating of the pulley, etc., or when there is a special heat generation source around the cylinder, the cylinder
charged pressure rises and then the cylinder may stop operation, if it is continuously operated for a long period of
time without switching operation, since a lock mechanism is built in such a phenomenon occurs more frequently
especially at the time of running in, therefore, frequently reciprocate the piston.
NOTICE
JIS B 2401
P10
JIS B 2401
P53
JIS B 2401
P65
JASO F404
3112
JIS B 2401
G50
NOK S8
NOK S70
NOK S120
JIS B 2401
G50
JIS B 2401
P20
NOK S32
5
1
1
1
1
2
1
1
1
4
4
No.
Part name
SR1146
JIS B 2401
P10
JIS B 2401
P60
JIS B 2401
P70
JIS B 2401
P125
JIS B 2401
G55
NOK S8
NOK S80
NOK S140
JIS B 2401
G50
JIS B 2401
P20
NOK S32
SR1453
JIS B 2401
P10
JIS B 2401
P75
JIS B 2401
P85
JIS B 2401
P140
JIS B 2401
G70
NOK S8
NOK S95
NOK S155
JIS B 2401
G65
JIS B 2401
P20
NOK S39
SR1566
JIS B 2401
P10
JIS B 2401
P90
JIS B 2401
P95
JIS B 2401
G155
JIS B 2401
G80
NOK S8
NOK S110
NOK S165
JIS B 2401
G90
JIS B 2401
P20
NOK S39
SR1675
JIS B 2401
P10
JIS B 2401
P90
JIS B 2401
P100
JIS B 2401
G160
JIS B 2401
G85
NOK S8
NOK S110
NOK S175
JIS B 2401
G90
JIS B 2401
P20
NOK S39
SR1781
JIS B 2401
P10
JIS B 2401
P120
JIS B 2401
P125
JIS B 2401
G190
JIS B 2401
G110
NOK S8
NOK S140
NOK S200
JIS B 2401
G130
JIS B 2401
P20
NOK S39
SR2010
Quantity
15
If any malfunction occurs, return cylinder to our company for repair. If it is disassembled and reassembled at a place
other than our company, it may not function correctly as well as cause precision failure.
○ Clean the suction strainer every 2 to 3 months.
○ Replace the hydraulic oil about once every 6 months.
6-1 Maintenance and inspection of the cylinder
6-2 Maintenance and inspection of hydraulic unit
6 . Maintenance and Inspection
6-3 List of seals to use (Refer to Fig.3)
Table 3
Check the points specified below again and take measures.
7-1 In the case of malfunction
In the case of malfunction, contact the distributor where you purchased the product or our branch office listed on the
back cover.
7-2 Where to contact in the case of malfunction
7 . Malfunction and Countermeasures
・If the chuck failed due to a seizure or breakage, remove the chuck from the machine, following the disassembly
steps in the chuck instruction manual, and then remove the cylinder by the reverse steps of "9. Attachment" after
page 20. When the jaws and covers cannot be removed due to a blockage of workpiece, do not disassemble
forcibly but please contact us or our agent.
・If these countermeasures do not correct the problem or improve the situation. Immediately stop using the
machine. Continuous use of a broken product or a defective product may cause a serious accident by the
cylinder or the work flying out.
・Only experienced and trained personnel should do repairs and fix malfunctions. Repair of a malfunction by a
person who has never received instruction from an experienced person, the distributor or our company may
cause a serious accident.
Table 4
WARNING
Defective
Measures
Check that the hydraulic pressure is operating by the motion of the flexible hose, etc.
Check that there are no mistakes in piping.
Try operations when operation inability specified in the items of the trial operation.
Check that the pressure is as specified at the cylinder pipe inlet by attaching a pressure
gauge near the inlet of the cylinder.
Wearing of the O-ring inside is possible when the flow rate of the returning side pipe or
the drain is more than usual.
Check that the viscosity of the hydraulic oil is as designated.
Replenish the hydraulic oil inside the tank if it is low.
When the room temperature is high and the radiation effect of the tank is bad, control
the oil temperature using a cooler or a fan, etc.
Do not suck air.
Replenish the hydraulic oil inside the tank if it is low.
If a large amount of dirt is deposited inside the tank, or when the hydraulic oil is
deteriorated, the pump may be worn out abnormally, and it will be necessary to repair
the pump.
Provide a stream slope, without air pockets, and no back pressure must be applied.
Return the drainage onto the surface of the oil of the hydraulic unit .
Check that the air breather of the hydraulic unit is not clogged.
Piston
Operation
Inability
Cylinder
Thrust Force
Insufficiency
Temperature
Rise
Pump noise
Oil leakage
from labyrinth
○The coolant collector is attached to the rear end of the SR type rotation hydraulic cylinder to easily collect the coolant
flowing inside the draw pipe.
○Proximity switches can be attached to the coolant collector to electrically check the piston stroke and detect
clamping/unclamping of a workpiece.
○To satisfy the requirements of European Standard "EN1550: 1997+A1: 2008 Safety requirements for the design and
construction of work holding chucks", it is necessary to attach a device which ensures that the gripping force of the
stroke checking proximity switches, etc. effectively operates. Because the proximity switches and detectable plate are
not attached to the cylinder and coolant collector of standard specification, please arrange separately when necessary.
8 . Coolant Collector
○The coolant collector is to be arranged separately from the cylinder, so designate the type specified below when necessary.
8-2 Type and applicable cylinder
Cylinder type
Coolant collector type Detectable plate
Proximity switch
Thread size
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
CSR11
CSR14
CSR15
CSR17
CSR17
CSR20
61R819452
61R819453
61R819454
61R819455
61R819455
61R819456
M12×1.0
Table 5
○Insert a O-ring between the coolant collector main body and the sleeve at the cylinder rear end, and attach the
coolant collector to the cylinder rear end.
○After attaching the coolant collector, attach the detectable plate to the piston.
○To easily collect the coolant flowing into the coolant collector, provide appropriate slope to the piping, so that the
coolant does not stagnate inside the hose. To check the flow, use a transparent vinyl hose.
(Inside diameter φ32) (Fig. 5)
8-3 Attachment
Adjusting plate[5]
Forward
Socket head cap screw[11]
Plain Washer[14]
Detectable plate
Cover[3]
After securely tightening to the
piston.tighten the lock bolt
Proximity switch
Seat packing (1)[6]
Back
Stroke
Chuck close
(O.D. gripping)
Socket head
cap screw[11]
Chuck open
(I.D. gripping)
Always clean so that the chips
are not clogged
Lock bolt
(Socket head cap screw)
Body[1]
O-ring[16]
Punching metal[9]
Sleeve
To the tank
for coolant
To the
hydraulic unit
φ32
φ32
Piston
1mm
Coolant
Under body[2]
Fig. 5
8-4 Positional adjustment of proximity switch
Read following instruction when you adjust the proximity switch. (Fig.5)
① Loosen the socket head cap screw [11] on the coolant collector, then remove the cover [3].
② Loosen the socket head cap screw [11] that fix the adjusting plate [5].
③ Unclamp the chuck.
④ Install one proximity switch on the outer surface of the body [1], passing through the adjusting plate [4], and make it
approach to the detectable plate until the LED of proximity switch lights up. At this time, adjust the screw of proximity
switch so that the distance between proximity switch and outside diameter end of detectable plate is about 1 mm, and
slide to adjust the adjusting plate [5] in the axial direction.
⑤ Tighten the socket head cap screw [11] to fix the adjusting plate [5].
⑥ Grip the workpiece.
⑦ For another proximity switch proceeds in the same way as it is described from point 4 and 5.
⑧ Confirm whether LED lights up by opening and closing the chuck several times.
⑨ Tighten the socket head cap screw [11] to fix the cover [3].
8-5 Precautions
・If the coolant overflows from the coolant collector, the coolant is flows to the sleeve side.
Always clean the punching metal [9] so that the coolant does not stagnate inside the coolant collector. Be sure
the chips are not clogged. (Fig. 5) Loose the socket head cap screw [13] when you remove the under body [2].
(Refer to page 19)
・When using a very large amount of coolant, the coolant collector may fail to collect it, resulting in damage to the
proximity switches due to the overflow or chips. In such a case, close the through hole by covering the detectable
plate as shown in the following figure to prevent a large amount of coolant and chips from entering the coolant
collector. Because the cover is not attached to the cylinder and coolant collector of standard specification, please
arrange separately when necessary.
・When using the coolant collector with the cover placed, periodically remove the cover and clean the through hole
to prevent chips from accumulating in it.
NOTICE
Detectable plate
Cover
Cylinder type
Cover
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
61R473905
61R473906
61R473907
61R473909
61R473909
61R473910
Seat packing (1)
Seat packing (2)
Seat packing (3)
Punching metal
Hose nipple
Socket head cap screw
Socket head cap screw
Socket head cap screw
Plain Washer
O ring
O ring
Quantity
1
1
7
3
4
4
1
1
Lathe rear cover
Cylinder
Cylinder adapter
Draw pipe
Top jaw
Sleeve
NC lathe
Support
Chuck
Back plate
Drain hose
Flexible hose
Use one with large inside
diameter as possible
Pressure
adjusting screw
Hydraulic pump
Pressure gauge
Manual
switching valve
Line filter
B
A
T
P
Dr
Solenoid valve
Return onto
the oil surface
Tank
SOL.
9 . Attachment
Following pages are described for machine tool manufacturers (personnel who attach a cylinder to a machine). Please
read following instruction carefully when you attach or detach a cylinder to machine, and please sufficiently understand
and follow the instructions for safe operation.
・Attach the manual switching valve at a position where it is easy to operate for the attaching equipment.
・Install the hydraulic unit at a position where the drain hose is not kinked and the needle of the pressure gauge is
easily read.
・Use a pipe inside diameter as large as possible.
For Machine Tool Manufacturers
9-1 Outline drawing of attachment
Fig. 7
Cylinder attaching bolt
Attaching screw
Cylinder
Cylinder
adapter
Spindle
Setscrew
Setscrew(3-6pieces)
Attaching screw
A
B
C
8
D
21
9-2 Production and attachment of cylinder adapter
・When other actuators are operated by the same hydraulic pressure source as the cylinder for chuck, be sure that
a pressure drop of the cylinder does not occur during use. A hydraulic pressure drop leads to a drop in the
gripping force which could allow the work to fly out.
・As to the drain hose
・Use one with inside diameter φ32.
・Use a transparent vinyl hose for visualization.
・Provide a stream slope, without air pocket. This will ensure no back pressure.
・The end of the hose is physically above the oil level. (Refer to Fig.7)
・If the hydraulic oil stagnates inside the cylinder, oil leakage occurs, which may cause a fire.
・Provide an air passage behind the cylinder or a window the size of the sleeve on the lathe rear cover for the hot
air generated from the cylinder to escape to the outside.
・Attach with the surface run-out of the cylinder adapter and the run-out of the spigot joint at 0.005 mm or less.
(Fig. 9) Large run-out causes vibration and shortens the life of the cylinder significantly.
・Install after removing the dust inside the pipe completely.
・Add a filter to the pressure supply line (P). If foreign matters gets inside the cylinder, this is dangerous since the
rotation valve of the cylinder will seize, the hose will tear off, and the cylinder will rotate. This is also dangerous
as the work will fly out.
・Always use a flexible hose for the hydraulic piping to the cylinder, and the bending force or tensile force of the
pipe must not be applied to the cylinder. Use a pipe inside diameter as large as possible and keep the piping
length as short as possible.
○Bring the cylinder as close to the lathe spindle support as possible. The attaching method of the cylinder adapter and
the measuring method of run-out are illustrated in the drawings below. (Fig. 8, Table 7)
○Never fail to provide a setscrew to prevent loosening of the cylinder adapter. (Fig. 9)
Fig. 8
Cylinder adapter attaching part
Run-out measurement of the cylinder adapter
Fig. 9
DANGER
NOTICE
NOTICE
WARNING
Socket head cap screw
Type
Chuck
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
B-206
B-208
BB206
BB208
B-210
BB210
B-212
BB212
a
M55×2
M60×2
M60×2
M75×2
M85×2
M90×2
M115×2
M115×2
b
25
30
30
35
35
35
35
35
c
25
25
25
25
30
35
35
35
d (f7)
50
55
55
70
80
85
110
110
-0.025
-0.050
-0.030
-0.060
-0.030
-0.060
-0.030
-0.060
-0.036
-0.071
-0.036
-0.071
-0.036
-0.071
-0.036
-0.071
e MIN
5
4
3.5
4.5
5
4.5
4.5
4.5
f MAX
M55×2
M60×2
M60×2
M75×2
M85×2
M90×2
M100×2
M115×2
L
A+38
A+42
A+36
A+44
A+41.5
A+40.5
A+39
A+39
○Determine the length of the draw pipe as shown below.
○When screwing the draw pipe into the piston, screw in a state that the piston fully comes outside.
9-3 Production and attachment of draw pipe
Table 7
・Sufficiently degrease and apply adhesive on the thread part of the piston and the thread part of the draw pipe,
and then screw in and tighten.
・If the screw is loose, the jaw stroke of chuck will shorten, which could allow the work to fly out.
Table 8
The dimension L in Fig. 10 is determined from the distance A between the cylinder adapter and the back plate.
Example) In the case of BB206, SR1453, the cylinder adapter and back plate distance A = 800,
The total length of the draw pipe is to be L = A + 36 = 800 + 36 = 836.
At the time of the screw process of the dimension a, the precision is to be JIS 6H and 6h, 6g matching the screw of the
piston of the cylinder. Pay attention so that the thread parts on both ends and the inner periphery do not swing or
become unbalanced.
DANGER
(Unit: mm)
9-4 Attachment of cylinder
・When removing/installing the cylinder, use a lifting belt and perform as follows. (Fig.12)
1 To lift up the cylinder, engage a lifting belt with the draw-pipe and lift up the cylinder while supporting it.
2 Insert the draw-pipe into the spindle.
3 When a lifting belt comes close to the spindle, shift the lifting belt toward the cylinder.
4 When the draw-pipe has entered the spindle sufficiently, re-engage a lifting belt with the cylinder body and fit the
cylinder closely to the spindle and then install the cylinder with the cylinder mounting bolts.
・Use a lifting belt when attaching and detaching the cylinder to and from the machine, as there is a danger of
injury or damage if the cylinder drops.
・Use the belt in the center of gravity not to lose the balance, and lift the draw pipe slowly. If balance is bad, the
belt slips, and the cylinder drops, and there is the injury danger such as blows.
・Provide sufficient strength for the draw pipe. If the draw pipe is broken due to insufficiency of the strength, the
gripping force will be lost instantly, which is dangerous as the work will fly out.
・Keep the dimension e and the dimension f in Fig. 10 for the draw pipe and a material with the tensile strength
380MPa (38kgf/mm
2) or more must be used.
・The personnel who designed draw pipe must judge whether the strength of the draw pipe is sufficient for the
usage conditions.
・The dimensions and materials specified in this manual do not guarantee that the draw pipe will not break under
every usage condition.
・If the screw-in depth of the draw pipe to the draw nut is insufficient, the screw will break and the gripping force
will be lost instantly, which is dangerous as the work will fly out.
・If the draw pipe is unbalanced, vibration occurs, the screw is broken and the gripping force will be lost instantly,
which is dangerous as the work will fly out.
・If the engagement of the screw of the draw pipe is loose, vibration may occur resulting in breakage of the screw.
If the screw breaks, the gripping force will be lost instantly, which is dangerous as the work will fly out.
CAUTION
DANGER
○Attach the drain port to be directly underneath. For its structure, if the drain port is not set directly underneath, the
hydraulic oil overflows from both ends of the sleeve resulting in oil leakage.
・Doing so may cause oil leakage which could result in a fire. And if the hydraulic oil leaks, the gripping force of the
chuck will lower and the work may fly out, which is dangerous.
WARNING
Detach in the reverse
procedures of attachment.
by the lathe
a
75
75
80
80
90
90
b
4.5
6
6
6
6
6
b
Cylinder
Lathe
Sleeve
Support
1
Cylinder adapter
A
a
d
B
Fig. 13
0.005TIR
Cylinder mounting
C・TIR
Cylinder adapter
D・TIR
Under body
・To prevent the sleeve of the cylinder from rotating, provide a support by utilizing the protrusion of the drain port
foundation.
・After attaching the support to the lathe, provide clearance between the protrusion of the sleeve and the support
so that force is not applied to the sleeve.
Table 9
(Unit: mm)
○As for the run-out when attaching the cylinder, attach the cylinder while keeping the vertical run-out of the sleeve rear
end and the cylinder periphery at the standard value specified in the table 10 or lower when rotation stop of the
sleeve is applied and the spindle is rotated.
30
φ47
NOTICE
Fig. 14
50
To obtain the above specified value of run-out, make the surface run-out of the cylinder adapter
as small as possible. (0.005 mm TIR or less)
Table 10
(Unit: mm)
Cylinder adapter
Fig. 15
・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which
is dangerous as the cylinder or work will fly out.
・Use the bolts attached to the chuck, and do not use other bolts. However, if you must use other bolts not
provided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be
sure they are long enough.
9-5 Tightening torque of the cylinder attaching bolt
DANGER
SR2010
M12
107 N・m
SR1781
SR1675
SR1566
M10
73 N・m
SR1453
SR1146
M8
33 N・m
Type
Bolt size
Tightening
torque
Table 11
Mass of the other parts
W
o
r
k
Stopper
Socket head
cap screw
A
B
External force
Type
SR1146
SR1453
SR1566
SR1675
SR1781
SR2010
Run-out
(mm)
0.02
0.02
0.02
0.02
0.02
0.02
External force
(kN)
2.5
5
5
5
5
5
Mass
(kg)
2
3
3
3
3
3
Screw depth
(mm)
8
12
12
12
12
13.5
Bolt size
6-M6
6-M6
6-M6
6-M6
6-M6
6-M6
φB
(mm)
64
73
88
103
103
133
φA (H7)
(mm)
76
85
100
113
113
145
9-6 Attachment of parts other than parts manufactured by
Kitagawa Corporation
Table 12
Refer to following pages when you attach the other than parts manufactured by Kitagawa Corporation (a stopper to
shorten stroke or spindle work stop, etc.) to the cylinder. (Refer to Fig.16 and Table 12)
Fig. 16
Note) External force is a value at static load.
・If there is unbalance of the parts to attach, vibrations are generated and cause oil leakage which could result in a
fire. and if the hydraulic oil leaks, the gripping force of the chuck will lower and the work may fly out, which is
dangerous.
・External force is excessive, the bolt will break, which is dangerous as the cylinder or work will fly out.
・We will not assume responsibility for injury, death, damage, or loss caused by usage of parts not manufactured
by Kitagawa Corporation. Additionally, if parts other than genuine parts manufactured by Kitagawa Corporation
are used, this guarantee will be completely invalid.
・The personnel who designed those parts must judge whether they are safe for the usage conditions.
・The dimensions and value specified in this manual do not guarantee that the cylinder or the parts other than parts
manufactured by Kitagawa Corporation will not break under every usage condition.
WARNING
・The solenoid valve is to be in a circuit to retain the gripping port position when no electric current is carried.
The switching of the cylinder is to be 4 port 2 position with electromagnetic valve, and design the hydraulic circuit
which grips the work in the state that the solenoid valve is degaussed.
If the circuit is designed in the opposite way, if there is a blackout, the work could be released and fly out.
・Provide a valve to switch over the inside and outside diameter gripping to prevent an operation mistake when
changing the gripping.
Additionally, when a solenoid valve is used as this switching valve, use a 4 port 2 position valve with a position
stopper that can retain the indicator circuit at the time of blackout.
○Consider the hydraulic circuit design so that the operation is easy and no mistakes in operation occur.
Attempt failsafe for the circuit so as not to cause any accidents even in the case of blackout. (Fig. 17)
○It is incorporated with a lock mechanism (lock valve) to maintain the specified gripping force even if the supplied
pressure abnormally drops due to blackout or malfunction of the pressure resource while processing a work, however,
it does not function unless the following warnings are observed.
10 . About Hydraulic Circuit Design
DANGER
4 port 2 position switching valve
Cylinder
Manual switching
valve for inside
and outside
diameter gripping
Fig.17
○It is incorporated with a mechanism to stop damage when the hydraulic oil filled inside the cylinder has increased its
pressure due to the volume change (relief valve). Pay attention to the points specified below for functional
maintenance of lock valve and relief valve.
・Assemble piping after completely removing the dust inside the pipe for functional maintenance of lock valve and
relief valve.
・If the function of the lock valve lowers, this is dangerous as the work will fly out when the hydraulic pressure
suddenly lowers due to blackout or malfunction of the hydraulic pump, etc.
・If the function of the relief valve lowers, the volume of the filled hydraulic oil changes causing an increase in
pressure, which is dangerous resulting in malfunction.
DANGER
・Select the operation equipment that matches the pipe diameter of the cylinder. The smaller the diameter is, the
larger the pipe resistance becomes and the lower the acting speed is.
NOTICE
・To avoid serious injury from flying work, use the throttle valve to keep the surge pressure low. Operation failure
and cylinder breakage may occur if a reducing valve used for the hydraulic pressure setting fails to respond to
pressure adjustment and results in excessive surge pressure.
WARNING
Remark ) What is a“surge pressure”?
Pressure produced by a change in velocity of the moving stream that result from activating a hydraulic pump,
operation of a solenoid valve.
・Tighten plumbing and plug at the specified torque 20N・m. If the torque is insufficient or excessive, the cylinder
will break and cause oil leakage which could result in a fire. It is dangerous because leakage cause the hydraulic
pressure drop and work flying out.
DANGER
SR2010
SR1781
SR1675
SR1566
Rc1/2
Rc1/2
SR1453
SR1146
Rc3/8
Rc3/8
Type
A port
B port
<Installation>
The hydraulic pressure supply ports are port A (cylinder pushing side) and port B (cylinder pulling side) in Fig.18.
Though both ports A and B have two ports each, connect the pipes to one port respectively and plug the reminders. For
the size of each port, see Table 13.
「Do not loosen sillver bolts」
A port
Drain port
Fig. 18
B port
CAUTION
●TYPE:TYPE
●MFG.No.:SERIAL No.
●MAX.SPEED:MAX PERMISSIBLE SPEED
●MAX.PULL/PUSH
MAX THRUST FORCE PULL/PUSH
●MAX.PRESS:
MAX PERMISSIBLE OIL PRESS
●MASS:MASS
SPECIFICATIONS
Dr
SPECIFICATIONS
MAX.SPEED min
-1
MAX.PULL/PUSH kN
MASS.PRESS MPA
MADE IN
JAPAN
CYLINDER TYPE
MFG.NO
MACHINE NO
MASS Kg
A
B
29
This product is based on the following standards or orders.
・Machinery directive : 2006/42/EC Annex I
・EN ISO 12100 : 2010
・EN1550 : 1997+A1 : 2008
Ultimate disposal of this product should be handled according to all national laws and regulations.
11-1 About standards and orders
11-3 About disposal
11-2 Information about markings of product
11 . Other information
■ JAPAN DOMESTIC
■ OVERSEAS
Tokyo office
Sendai office
Nagoya office
Osaka office
Hiroshima office
Kyushu office
Overseas office
The products herein are controlled under Japanese Foreign Exchange and Foreign Trade Control Act. In the event of importing and/or exporting the products,
you are obliged to consult KITAGAWA as well as your government for the related regulation prior to any transaction.
Kitagawa Corporation
Kitagawa Global hand Company
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Tel.+81-847-40-0561
Fax.+81-847-45-8911
E 2019.11.2000
KITAGAWA-NORTHTECH INC.
TECNARA TOOLING SYSTEMS, INC.
KITAGAWA EUROPE LTD.
KITAGAWA EUROPE GmbH
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KITAGAWA KOREA AGENT CO., LTD.
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