Kitagawa M0915RA User manual

Version 1.12 (2021.07.07)
Original instructions
INSTRUCTION MANUAL
M-H type
ROTARY HYDRAULIC CYLINDER
CLOSED CENTER
Kitagawa Corporation
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
TEL [phone]
FAX [phone]
・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.
DANGER

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1
Preface
This manual provides detailed information about how to safely and correctly use the
cylinder (M･H type, 09 size is M･R 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.
Terms and Symbols Used for Safety Messages
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.
Safety Alert Symbol
The triangle is the safety alert symbol used to alert you to potential safety hazards that
could result in injury or death.
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.

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2
Liability and How to Use this Manual
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.
Guarantee and Limitation of Liability
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.

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3
Table of Contents
１． Structural Drawing and Parts List ----------------------------------------------------------------------5
1-1. Type display
1-2. Structural drawing
1-3. Scope of product
1-4. Parts list
2. Important Safety Precautions -----------------------------------------------------------13
3. Specifications ----------------------------------------------------------------------------------------------20
3-1. Specification table
4. Hydraulic Oil-------------------------------------------------------------------------------------------------21
5. Trial Operation----------------------------------------------------------------------------------------------23
6. Proximity switch--------------------------------------------------------------------------------------------25
6-1. Specification
6-2. Adjusting the position of a proximity switch
7. Maintenance and Inspection----------------------------------------------------------------------------27
7-1. Maintenance and inspection of cylinder
7-2. Maintenance and inspection of hydraulic unit
7-3. List of seals to use
7-4. Special instructions
8. Malfunction and Countermeasures-------------------------------------------------------------------31
8-1. In the case of malfunction
8-2. Where to contact in the case of malfunction

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For Machine Tool Manufacturers (Chapter 9)
9. Attachment--------------------------------------------------------------------------------------------------33
9-1. Outline drawing of attachment
9-2. Production and attachment of cylinder adapter
9-3. Production and attachment of draw bar
9-4. Attachment of cylinder
9-5. Tightening torque of cylinder attaching bolt
10. About Hydraulic Circuit Design-----------------------------------------------------------------------44
11. Other Information ----------------------------------------------------------------------------------------47
11-1. About standards and orders
11-2. Information about markings of product
11-3. About disposal

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5
1. Structural Drawing and Parts List
1-1. Type display
Type display as shown below
1-2. Structural drawing
Fig. 1 Note) Proximity switch is not included.
Please prepare by yourself.
1
2
3
4
5
6
7
Example
M
11
20
HA
2
1
D
1.
M
Abbreviated name of M cylinders
2.
11
Nominal inside diameter of the cylinder
3.
20
Nominal piston stroke
4.
HA
Inner air type (M09 type is RA)
HB
Inner coolant type
HC
None
5～7
Columns for special specification

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1-3. Scope of product
This instruction manual is for the cylinder part.
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 13 in this manual.
・As for the chuck, follow the instruction manual for the chuck.

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7
1-4. Parts list
・HA(M09 type is RA) type
M0915RA
M1120HA21D、M1221HA21D、M1330HA21D
Detail of Teflon seal
Fig. 3

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8
Table 1
No.
Part name
Quantity
No.
Part name
Quantity
1
Lock valve
2
19
Socket head cap screw
4
2
Relief valve
2
20
Socket head cap screw
2
3
Cylinder
1
21
Socket head cap screw
2
4
Rotary valve
1
22
Socket head cap screw
4
5
Piston
1
23
Socket button head cap screw
3
6
Sleeve
1
24
O-ring
3
7
Sleeve cover
1
25
O-ring
3
8
Detectable plate
1
26
O-ring
2
9
Ring
1
27
O-ring
1
10
Bracket
1
28
O-ring
2（M0915RA:1）
11
Slide pin
2
29
O-ring
1（M0915RA only）
12
Shim ring
1
30
O-ring
1（M0915RA:0）
13
Spacer
M0915RA : 1
M1120HA21D : 1
M1221HA21D : 0
M1330HA21D : 2
31
O-ring
1
32
O-ring
1
33
Oil seal
1
34
Teflon seal
2
14
Adjusting plate
2
35
Retaining ring
1
15
Bearing
1
36
Washer
4
16
Bearing
1
37
Washer
3
17
Socket head cap screw
6
38
Washer
2
18
Socket head cap screw
6

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・HB type
Detail of Teflon seal
Fig. 4

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Table. 2
No.
Part name
Quantity
No.
Part name
Quantity
1
Lock valve
2
19
Socket head cap screw
4
2
Relief valve
2
20
Socket head cap screw
6
3
Cylinder
1
21
Socket head cap screw
2
4
Rotary valve
1
22
Socket head cap screw
4
5
Piston
1
23
Socket head cap screw
3
6
Sleeve
1
24
O-ring
3
7
Sleeve cover
1
25
O-ring
3
8
Detectable plate
1
26
O-ring
2
9
Ring
1
27
O-ring
1
10
Bracket
1
28
O-ring
2
11
Slide pin
2
29
O-ring
1
12
Spacer
M1120HB21N : 1
M1221HB21N : 0
M1330HB21N : 2
30
O-ring
1
31
O-ring
1
32
Oil seal
1
13
Cover
1
33
Teflon seal
1
14
Adjusting plate
2
34
Mechanical seal
1
15
Bearing
1
35
Retaining ring
1
16
Bearing
1
36
Washer
4
17
Socket head cap screw
6
37
Washer
3
18
Socket head cap screw
6
38
Washer
2

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・HC type
Fig. 5

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Table 3
No.
Part name
Quantity
No.
Part name
Quantity
1
Lock valve
2
17
Socket head cap screw
6
2
Relief valve
2
18
Socket head cap screw
4
3
Cylinder
1
19
Socket head cap screw
2
4
Rotary valve
1
20
Socket head cap screw
2
5
Piston
1
21
Socket head cap screw
4
6
Sleeve
1
22
Socket button head cap screw
3
7
Sleeve cover
1
23
O-ring
3
8
Detectable plate
1
24
O-ring
2
9
Ring
1
25
O-ring
2
10
Bracket
1
26
O-ring
1
11
Slide pin
2
27
O-ring
2
12
Spacer
M1120HC21D：1
M1221HC21D：0
M1330HC21D：2
28
O-ring
1
29
Oil seal
1
30
Retaining ring
1
13
Adjusting plate
2
31
Washer
4
14
Bearing
1
32
Washer
3
15
Bearing
1
33
Washer
2
16
Socket head cap screw
6

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13
2. Important Safety Precautions
Important safety precautions are summarized below. Please read this section before first
starting to use this product.
DANGER
Failure to follow the safety precautions below will result in
serious injury or death.
Turn off main power supply before attaching, inspecting or replacing
cylinder, and before adding oil.
・The cylinder may start rotation
suddenly, and a part of the body or
clothing may be caught.
Close door before rotating spindle.
・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.
・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.
！
For All Users
For All Users
For All Users

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Important Safety Precautions
DANGER
Failure to follow the safety precautions below will result in
serious injury or death.
Do not allow the rotation speed of the chuck to exceed the maximum
allowable speed limit.
・If the rotation speed of the chuck
exceeds the rotation speed limit,
this is very dangerous as the
chuck and work will fly out.
The input force of the chuck (piston thrust, pulling force of the draw bar)
must not exceed the allowable maximum input force.
・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.
Be sure cover is attached to periphery of cylinder before operating machine.
(Refer to pages 33-34)
・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
For All Users
For All Users

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Important Safety Precautions
DANGER
Failure to follow the safety precautions below will result in
serious injury or death.
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 pages 43)
・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.
Tightening torque is moment of force when you tighten a bolt. Tightening torque= F×L.
Specified torque for socket head cap screw
Bolt size
Tightening torque
M8
33
N・m
M10
73
N・m
For All Users

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Important Safety Precautions
DANGER
Failure to follow the safety precautions below will result in
serious injury or death.
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.
・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.
For All Users

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Important Safety Precautions
DANGER
Failure to follow the safety precautions below will result in
serious injury or death.
Provide sufficient strength for the draw bar (Refer to pages 37-39).
Provide sufficient screw depth for the draw bar.
Firmly tighten the draw bar.
Apply adhesive to the thread part of the draw bar and screw it in at the
specified torque.
・If the draw bar break, the gripping force
is instantly lost and this is dangerous as
work will fly out.
・If the screw depth of the draw bar 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 bar 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 bar, piston to
the end of the pressing side stroke.
・If the engagement of the screw of the
draw bar 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.
Type
Tightening torque
M0915
100
N・m
M1120
100
N・m
M1221
100
N・m
M1330
180
N・m
！
For Machine Tool Manufactures

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18
Important Safety Precautions
WARNING
Failure to follow the safety precautions below could result in
serious injury or death.
Do not modify the cylinder.
・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 screw.
・Do not detach parts of the cylinder from the cylinder.
Do not rotate the cylinder without hydraulic pressure.
・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.
Periodically add hydraulic oil.
Turn off power and use designated hydraulic oil. (Refer to page 21)
・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.
For All Users
For All Users
For All Users

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Important Safety Precautions
WARNING
Failure to follow the safety precautions below could result in
serious injury or death.
Assemble piping after completely removing the dust inside the pipe.
Add a filter of 20μm or less into the pressure supplying line(P).
・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.
Do not operate the machine
after drinking alcohol or
taking medication.
Do not operate the machine
wearing gloves, a necktie, and
other loose clothing or jewelry.
・Dangerous since these lead to operation
mistakes and misjudgment.
・Dangerous since it will be caught.
Do not attach the other than parts manufactured by Kitagawa Corporation to
the cylinder. (Refer to pages 7-12, Fig.3-5)
・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.
！
Filtering
Precision
20μm or
less
For All Users
For All Users
For All Users
For All Users