Rotary Joint

Hydraulic Oil/Air/Coolant
Rotary Joint
Mode l
JR
Long Life・Compact・Low Torque
A center through port is available for high volume coolant
Applicable for Hydraulic・Pneumatic・High Volume Coolant ※1
It adopts the original developed low friction seal and low torque enables smooth rotation.
Each part of this rotary joint is highly durable and each seal provided by KOSMEK has low torque, highly durable and high capacity
design that allows for a longer life of the component.
You can choose the number of ports from 2, 4, 6, 8 along with the center through port.
※1. JRB is the only model with center through port.
Primary Side
Hydraulic/Air/Coolant
Center Through Port（JRB only）
（Rc Thread or G Thread）
Primary Side
Hydraulic/Air
Rotary Shaft
Ball Bearing
O-ring
Exclusive Seal
Rotary Shaft
Seal Part Detail
Secondary Side
Hydraulic/Air
887
Secondary Side
Hydraulic/Air/Coolant
Ball Bearing
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
A pplication Examples
High-Power
Series
Pneumatic Series
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others
Air
Sequence Valve
BW D
Hydraulic
Non-Leak Coupler
BG A /BG B
BG C /BG D
BG P/BG S
BBP/BBS
BNP/BNS
On Rotary Table
On Angle Plate Fixture
BJP/BJS
BFP/BFS
Auto Coupler
Make the secondary side pressure
higher with low torque.
Pressure Source
With Low Pressure
Low Pressure
Low Torque
With Booster
JVA /JVB
Secondary Side
High Pressure
JVC /JVD
JVE/JVF
JNA /JNB
JNC /JND
JLP/JLS
Using a booster (model AU/BU) after rotary
joint allows low rotating torque and will allow
Rotary Joint
the use of high pressure for actuators.
JR
Hydraulic Valve
BK
BEQ
BT
BLS/BLG
BLB
JSS/JS
JK A /JK B
BM/BMG
A U/A U- M
BU
BP/JPB
Mode l
Classification
The Number of the Ports
JRC
M ode l
→ P. 889
JRB
BX
→ P. 890
No Center Through Port
One Center Through Port
2/ 4/ 6/ 8 Port
2/ 4/ 6/ 8 Port＋Center Through Port
General Hydraulic Oil：7MPa or less
Usable Fluid
BEP/BSP
BH
BC
Air
Hydraulic Unit
CV
CK
CP
air：1MPa or less
CS
Coolant: less than 1MPa
(Available only for center through port)
CB
CC
A B/A B- V
Low Rotary Torque (Compact Design)
A C /A C - V
Feature
Large Flow Rate
888
Rotary Joint
model
JRC/ J RB
Model No. Indication：No Center Through Port Model
JRC 02 0 0 - S - A
1
2
3
4
5
4 Primary Side Piping Method
1 The Number of the Ports
02 ：２ports
06 ：６ports
B ： Piping Option（BSPP Thread (G-Thread)）
04 ：４ports
08 ：８ports
S ： Piping Option（BSPT (Rc-Thread)）
2 Center Through Port
5 Secondary Side Piping Method
A ： Both Gasket and Piping Options
0 ： No Center Through Port
（With BSPT Plug (R-Thread Plug)）
D ： Both Gasket and Piping Options
3 Design No.
（With BSPP (G-Thread Plug)）
0 ： Revision Number
Note
1. Contact us, if you need a piping option different than what is
shown in model code of catalogue.
Specifications
JRC0200-□-□
Model No.
JRC0400-□-□
Operating Pressure Oil
MPa
Ports
JRC0800-□-□
0 ∼ 7.0
0 ∼ 1.0
Air
2
Number
4
Min. Passage Area mm2
6
8
200
200
19.6
Center Through Port
Nothing
Allowable Rotary Speed (at 7MPa)※1 min-1
280
Usable Fluid
280
General Hydraulic Oil Equivalent to ISO-VG-32 or Air
Operating Temperature
℃
Mass
kg
Notes
JRC0600-□-□
-10 ∼ 70
4.5
5.5
8.0
9.5
※1. The allowable rotary speed is based on operating pressure of maximum 7MPa.
1. Please prepare one circuit for drain between them when the oil slick leak from hydraulic circuit to adjacent air circuit becomes a problem.
2. Please avoid continuous operation as it will cause overheating and damage to the internal packing.
Performance Curve (Rotary Torque：Reference Value)
10
Rotary Torque (N･m)
Model No. Indication JRC0200 JRC0400 JRC0600 JRC0800
-□-□
-□-□
-□-□
-□-□
7
1.5
1.8
5.5
7.5
6
1.4
1.7
5.1
6.9
5
1.4
1.6
4.7
6.4
4
1.3
1.5
4.3
5.8
3
1.2
1.5
4.0
5.3
2
1.1
1.4
3.6
4.7
1
1.1
1.3
3.2
4.2
0
1.0
1.2
2.8
3.6
Notes
1. This graph show the relationship between the rotary torque and
the fluid pressure.
2. The starting torque might be more than double of rotating torque
shown in graph and may change according to the conditions of
the stationary down time. It varies depending on the condition
such as stationary down time.
3. The rotary torque is a reference level.
889
8
Rotary Torque (N・m)
Fluid Pressure(MPa)
JRC0800
6
JRC0600
4
2
0
JRC0400
JRC0200
0
1
2
3
4
Fluid Pressure (MPa)
5
6
7
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
Model No. Indication：One Center Through Port Model
Pneumatic Series
Hydraulic Series
J RB 02 1 0 - S - G - S
1
2
3
4
5
Valve / Coupler
Hydraulic Unit
6
Manual Operation
Accessories
4 Primary Side Piping Method
1 The Number of the Ports
Cautions / Others
02 ：２ports
06 ：６ports
B ： Piping Option（BSPP Thread (G-Thread)）
04 ：４ports
08 ：８ports
S ： Piping Option（BSPT (Rc-Thread)）
Air
Sequence Valve
BW D
5 Secondary Side Piping Method
2 Center Through Port
Hydraulic
Non-Leak Coupler
BG A /BG B
G ： Gasket Option
1 ： One Center Through Port
BG C /BG D
6 Piping Method of Center Through Port
3 Design No.
0 ： Revision Number
BG P/BG S
BBP/BBS
B ： Piping Option（BSPP Thread (G-Thread)) ※Contact us.
BNP/BNS
S ： Piping Option（BSPT (Rc-Thread)）
BJP/BJS
BFP/BFS
Note
1. Contact us, if you need a piping option different than what is
shown in model code of catalogue.
Specifications
Model No.
JRB0210-□-Ｇ-□
JRB0410-□-Ｇ-□
Operating Pressure Oil
MPa
2
JNA /JNB
JNC /JND
JLP/JLS
4
6
Min. Passage Area mm2
8
Rotary Joint
28.3
JR
General Hydraulic Oil Equivalent to ISO-VG-32 or Air
Usable Fluid
1
Hydraulic Valve
254
BK
Number
Center Through Min. Passage Area mm2
Port
Usable Fluid
General Hydraulic Oil Equivalent to ISO-VG-32 or Air or Coolant
Allowable Rotary Speed (at 7MPa)※1 min-1
140
Operating Temperature
℃
Mass
kg
Notes
JVE/JVF
JRB0810-□-Ｇ-□
0 ∼ 1.0
Air/Coolant
BEQ
BT
BLS/BLG
-10 ∼ 70
7.5
BLB
10.0
12.5
JSS/JS
15.0
JK A /JK B
※1. The allowable rotary speed is based on operating pressure of maximum 7MPa.
1. Please prepare one circuit for drain between them when the oil slick leak from hydraulic circuit to adjacent air circuit becomes a problem.
2. Please avoid continuous operation as it will cause overheating and damage to the internal packing.
Performance Curve (Rotary Torque：Reference Value)
BX
10
JRB0810
-□-G-□
-□-G-□
7
3.2
5.4
7.5
9.6
6
3.1
5.2
7.2
9.2
5
2.9
4.9
6.9
8.8
4
2.8
4.7
6.5
8.4
3
2.7
4.5
6.2
8.0
2
2.5
4.2
5.9
7.6
1
2.4
4.0
5.6
7.2
0
2.3
3.8
5.3
6.8
Notes
1. This graph show the relationship between the rotary torque and
the fluid pressure.
2. The starting torque might be more than double of rotating torque
shown in graph and may change according to the conditions of
the stationary down time. It varies depending on the condition
such as stationary down time.
3. The rotary torque is a reference level.
BEP/BSP
BH
BC
8
Rotary Torque (N・m)
-□-G-□
A U/A U- M
BP/JPB
Model No. Indication JRB0210 JRB0410 JRB0610 JRB0810
-□-G-□
BM/BMG
BU
Rotary Torque (N･m)
Fluid Pressure(MPa)
JVA /JVB
JVC /JVD
0 ∼ 7.0
Number
Ports
JRB0610-□-Ｇ-□
Auto Coupler
JRB0610
CV
6
JRB0410
CK
CP
CS
4
JRB0210
CB
CC
A B/A B- V
2
0
Air
Hydraulic Unit
A C /A C - V
0
1
2
3
4
5
6
7
Fluid Pressure (MPa)
890
Rotary Joint No Center Through Port
m od e l
J RC
External Dimensions：JRC0200
※This drawing indicates JRC0200-S-A.
(2 Port Circuit)
When G thread is necessary for a primary side or secondary side port,
please contact us separately.
Model No. Indication
B
A
J RC0 2 0 0 - S - D
4
45°
90°
. 72
p.c.d
Notes
4 Primary Side Piping Method
5 Secondary Side Piping Method
5
1. The rotation side must be fixed the flange part with the bolt,
and restrain only the rotation direction of the stop side.
2
2. Please use hose for piping of stop side.
1
3. Please prepare one circuit for drain between them when the oil
slick leak from hydraulic circuit to adjacent air circuit becomes a
problem.
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
4-M8×1.25 Thread Depth 13
Stop Side Restriction
5. Each port exhibits a port number.
6. When using Rc1/4 thread for a secondary side port, please attach
the attached R1/8 screw plug to the gasket port part.
When using gasket option, please attach O-ring and R1/4 plug.
Machining Dimensions of Mounting Area
90°
0
Incoming Port
Rc-1/4 Thread
. 102
p.c.d
13
φ87- 0.2
45°
Stop Side
1
3
-0.009
φ42g7 -0.034
4-M8×1.25×45 Bolt（Included）
Square Spring Washer
Primary Side Port
90°
45°
.d.
p.c
1
102
2-Rc-1/8 Thread
With BSPT Plug
(R-Thread Plug)
+ 0.046
0
φ42H8
C0.6
6.3S※1
3.5 or more
Rotating Side
2
4-M8×1.25 Depth 16
（90°or more）
Outgoing Port
2-Rc-1/4 Thread
With BSPT Plug (R-Thread Plug)
φ118
891
2-φ8 or less※1
（180°Pitch）
p.c
.d.
64
30
13
19
74
44
2
（φ8 or less）※1
Notes
※1. Only in the case of a gasket method, it is necessary.
Outgoing Port
1. Roughness of mounting surface (O ring seal surface）
2-Gasket Port
should be 6.3S or less.
p.c O-ring：1BP12（Included）
.d.
64
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
External Dimensions：JRC0400
※ This drawing indicates JRC0400-S-A.
(4 Port Circuit)
Pneumatic Series
When G thread is necessary for a primary side or secondary side port,
please contact us separately.
Model No. Indication
B
A
J RC0 4 0 0 - S - D
4
90°
4 Primary Side Piping Method
5 Secondary Side Piping Method
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
5
Cautions / Others
45°
Air
Sequence Valve
2
. 72
p.c.d
3
Notes
1. The rotation side must be fixed the flange part with the bolt,
and restrain only the rotation direction of the stop side.
2. Please use hose for piping of stop side.
1
3. Please prepare one circuit for drain between them when
the oil slick leak from hydraulic circuit to adjacent air circuit
becomes a problem.
4
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
4-M8×1.25 Thread Depth 13
Stop Side Restriction
BW D
Hydraulic
Non-Leak Coupler
BG A /BG B
BG C /BG D
BG P/BG S
BBP/BBS
BNP/BNS
BJP/BJS
5. Each port exhibits a port number.
6. When using Rc1/4 thread for a secondary side port, please
attach the attached R1/8 screw plug to the gasket port part.
When using gasket option, please attach O-ring and R1/4 plug.
BFP/BFS
Auto Coupler
JVA /JVB
JVC /JVD
JVE/JVF
Machining Dimensions of Mounting Area
Stop Side
Incoming Port
4-Rc-1/4 Thread
JNC /JND
JLP/JLS
Rotary Joint
2
45°
13
0
φ87- 0.2
JNA /JNB
90°
JR
. 102
68
p.c.d
BK
98
3
1
BEQ
p.c.d
. 64
BT
BLS/BLG
BLB
30
19
Hydraulic Valve
JSS/JS
4
3
13
JK A /JK B
φ118
Rotating Side
4
2
. 10
.d
p.c
φ42H8
1
p.c
.d.
4-Rc-1/8 Thread
With BSPT Plug
(R-Thread Plug)
2
64
A U/A U- M
BU
BX
+ 0.046
0
C0.6
BEP/BSP
6.3S※1
BH
BC
Air
Hydraulic Unit
CV
（φ8 or less）※1
3
BM/BMG
BP/JPB
3.5 or more
4-M8×1.25×45 Bolt（Included）
Square Spring Washer
Primary Side Port
90°
45°
4-M8×1.25 Depth 16
（90°Pitch）
4-φ8 or less※1
Outgoing Port
（90°Pitch）
4-Rc-1/4 Thread
With BSPT Plug (R-Thread Plug)
φ42g7 -0.009
-0.034
Notes
※1. Only in the case of a gasket method, it is necessary.
1. Roughness of mounting surface (O ring seal surface）
should be 6.3S or less.
CK
CP
CS
CB
CC
A B/A B- V
A C /A C - V
Outgoing Port
4-Gasket Port
O-ring：1BP12（Included）
892
Rotary Joint No Center Through Port
m od e l
J RC
External Dimensions：JRC0600
※This drawing indicates JRC0600-S-A.
(6 Port Circuit)
When G thread is necessary for a primary side or secondary side port,
please contact us separately.
Model No. Indication
B
A
J RC0 6 0 0 - S - D
4
4 Primary Side Piping Method
5 Secondary Side Piping Method
5
60
°
30°
°
60
4
3
. 82
p.c.d
Notes
1. The rotation side must be fixed the flange part with the bolt,
and restrain only the rotation direction of the stop side.
5
2. Please use hose for piping of stop side.
2
3. Please prepare one circuit for drain between them when the oil
slick leak from hydraulic circuit to adjacent air circuit becomes a
6
problem.
1
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
5. Each port exhibits a port number.
6-M8×1.25 Thread Depth 13
6. When using Rc1/4 thread for a secondary side port, please attach
Stop Side Restriction
the attached R1/8 screw plug to the gasket port part.
When using gasket option, please attach O-ring and R1/4 plug.
Stop Side
Incoming Port
6-Rc-1/4 Thread
0
Machining Dimensions of Mounting Area
°
60
60
°
122
92
30°
13
φ97- 0.2
3
4
5
12
d. 1
p.c.
2
p.c.
30
- 0.010
φ52g7 - 0.040
Outgoing Port
6-M8×1.25 Thread Depth 16
6-Rc-1/4 Thread
（60°Pitch）
With BSPT Plug (R-Thread Plug)
φ128
Rotating Side
1
60
°
30°
6
12
d. 1
p.c.
5
p.c.
d. 7
6-Rc-1/8 Thread
With BSPT Plug (R-Thread Plug)
3
φ52H8 + 0.046
0
C0.6
6.3S※1
（φ8 or less）※1
2
4
6-φ8 or less※1
（60°Pitch）
3.5 or more
6-M8×1.25×45 Bolt（Included）
Square Spring Washer
Primary Side Port
°
60
893
4
3
13
19
d. 7
1
6
4
Outgoing Port
6-Gasket Port
O-ring：1BP12（Included）
Notes
※1. Only in the case of a gasket method, it is necessary.
1. Roughness of mounting surface (O ring seal surface）
should be 6.3S or less.
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
External Dimensions：JRC0800
※ This drawing indicates JRC0800-S-A.
(8 Port Circuit)
Pneumatic Series
When G thread is necessary for a primary side or secondary side port,
please contact us separately.
Model No. Indication
B
A
J RC0 8 0 0 - S - D
4
45°
4 Primary Side Piping Method
5 Secondary Side Piping Method
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
5
45
°
Cautions / Others
45°
5
22.5°
82
.d.
p.c
Air
Sequence Valve
4
Notes
3
6
BW D
1. The rotation side must be fixed the flange part with the bolt,
Hydraulic
Non-Leak Coupler
and restrain only the rotation direction of the stop side.
2. Please use hose for piping of stop side.
7
2
8
BG A /BG B
3. Please prepare one circuit for drain between them when
BG C /BG D
the oil slick leak from hydraulic circuit to adjacent air circuit
BG P/BG S
becomes a problem.
1
BBP/BBS
4. Please avoid continuous operation as it will cause overheating
BNP/BNS
and damage to the internal packing.
8-M8×1.25 Thread Depth 13
Stop Side Restriction
Stop Side
0
BFP/BFS
6. When using Rc1/4 thread for a secondary side port, please
attach the attached R1/8 screw plug to the gasket port part.
When using gasket option, please attach O-ring and R1/4 plug.
Incoming Port
8-Rc-1/4 Thread
Auto Coupler
JVA /JVB
JVC /JVD
JVE/JVF
Machining Dimensions of Mounting Area
13
φ97- 0.2
BJP/BJS
5. Each port exhibits a port number.
JNA /JNB
45°
22.5°
d.
c.
p.
2
11
45
°
45°
JNC /JND
JLP/JLS
116
Rotary Joint
5
JR
146
4
3
7
2
BK
90°
90°
Hydraulic Valve
6
BEQ
BT
30
JSS/JS
φ128
Rotating Side
c.d
45°
1
45
°
8
2
1
.1
c.d
p.
7
2
c.d
5
8-Rc-1/8 Thread
With BSPT Plug (R-Thread Plug)
4
4
A U/A U- M
BU
BP/JPB
BEP/BSP
6.3S※1
BH
BC
Air
Hydraulic Unit
CV
CK
Notes
※1. Only in the case of a gasket method, it is necessary.
1. Roughness of mounting surface (O ring seal surface）
should be 6.3S or less.
3
p.
C0.6
BM/BMG
.7
BX
+ 0.046
0
（φ8 or less）※1
90°
6
φ52H8
8-φ8 or less※1
（45°Pitch）
3.5 or more
6-M8×1.25×45 Bolt（Included）
Square Spring Washer
Primary side Port
JK A /JK B
p.
Outgoing Port
6-M8×1.25 Thread Depth 16
8-Rc-1/4 Thread
With BSPT Plug (R-Thread Plug)
-0.010
φ52g7 -0.040
22.5°
BLB
1
8
3
13
19
BLS/BLG
CP
CS
CB
CC
A B/A B- V
A C /A C - V
.7
4
Outgoing Port
8-Gasket Port
O-ring：1BP12（Included）
894
Rotary Joint One Center Through Port
model
J RB
External Dimensions：JRB0210
※ This drawing indicates JRB0210-S-G-S.
(2 Port Circuit + 1 Center Through Port)
When G thread is necessary for a primary side port or a center
through port, please refer separately.
Model No.Indication
B
B
J RB0 2 1 0 - S - G- S
4
4 Primary Side Piping
Method
6 Center Through Port
Piping Method
6
7
d. 9
p.c.
Notes
1. The rotation side must be fixed the flange part with the bolt,
and restrain only the rotation direction of the stop side.
2
2. Please use hose for piping of stop side.
1
3. Please prepare one circuit for drain between them when
the oil slick leak from hydraulic circuit to adjacent air circuit
becomes a problem.
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
2-M8×1.25 Thread Depth 13
5. Each port exhibits a port number.
Stop Side Restriction
Machining Dimensions of Mounting Area
45°
Stop Side
Incoming Port
2-Rc-1/4 Thread
0
φ115 - 0.2
2
. 135
65
13
p.c.d
83
p.c.d
. 90
1
2.5
18
φ18
10
- 0.010
φ72g7 - 0.040
Rotating Side
φ72H8
45°
C0.6
. 135
p.c.d
p.c.d
. 90
2
895
+ 0.046
0
2-Rc-1/2 Thread
(Same Position on Opposite Side)
Center Through Port
6.3S
3 or more
1
Outgoing Port
2-Gasket Port
O-ring：1BP10（Included）
Secondary Side Connection Port
2-φ7 or less
（180°Pitch）
4-M8×1.25×30 Bolt（Included）
4-M8×1.25 Thread Depth 13
Square Spring Washer
（90°Pitch）
Primary Side Port
φ155
（φ7 or less）
Note
1. Roughness of mounting surface (O-ring seal surface）
should be 6.3S or less.
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
External Dimensions：JRB0410
※ This drawing indicates JRB0410-S-G-S.
(4 Port Circuit + 1 Center Through Port)
Pneumatic Series
When G thread is necessary for a primary side port or a center
through port, please refer separately.
Model No. Indication
B
B
J RB0 4 1 0 - S - G- S
4
90°
4 Primary Side Piping
Method
6 Center Through Port
Piping Method
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
6
Cautions / Others
45°
Air
Sequence Valve
97
c.d.
2
p.
Notes
1. The rotation side must be fixed the flange part with the bolt,
Hydraulic
Non-Leak Coupler
and restrain only the rotation direction of the stop side.
3
2. Please use hose for piping of stop side.
1
BG A /BG B
3. Please prepare one circuit for drain between them when
the oil slick leak from hydraulic circuit to adjacent air circuit
becomes a problem.
4
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
4-M8×1.25 Thread Depth 13
BW D
BG C /BG D
BG P/BG S
BBP/BBS
BNP/BNS
BJP/BJS
5. Each port exhibits a port number.
BFP/BFS
Stop Side Restriction
Auto Coupler
JVA /JVB
JVC /JVD
JVE/JVF
Machining Dimensions of Mounting Area
Stop Side
0
JNC /JND
45°
Incoming Port
4-Rc-1/4 Thread
φ115 - 0.2
JNA /JNB
JLP/JLS
13
Rotary Joint
JR
2
3
5
.d. 13
BEQ
p.c.d
. 90
4
18
Hydraulic Valve
BK
90°
φ18
113
95
p.c
BT
BLS/BLG
BLB
1
JSS/JS
2.5
JK A /JK B
10
φ72g7 -0.010
-0.040
BM/BMG
4-M8×1.25×30 Bolt（Included）
Square Spring Washer
Primary Side Port
φ155
Rotating Side
4-M8×1.25 Thread Depth 13
（90°Pitch）
φ72H8
45°
1
135
.c.d.
p
. 90
Outgoing Port
4-Gasket Port
O-ring：1BP10（Included）
2
A U/A U- M
BU
BP/JPB
BX
BEP/BSP
C0.6
p.c.d
3
+ 0.046
0
6.3S
3 or more
4
Secondary Side
Connection Port
4-φ7 or less
（90°Pitch）
（φ7 or less）
Note
1. Roughness of mounting surface (O ring seal surface）
should be 6.3S or less.
BH
BC
Air
Hydraulic Unit
CV
CK
CP
CS
CB
CC
A B/A B- V
A C /A C - V
2-Rc-1/2 Thread
(Same Position on Opposite Side)
Center Through Port
896
Rotary Joint One Center Through Port
model
J RB
External Dimensions：JRB0610
※This drawing indicates JRB0610-S-G-S.
(6 Port Circuit + 1 Center Through Port)
Model No.Indication
When G thread is necessary for a primary side port or a center
through port, please refer separately.
B
B
J RB0 6 1 0 - S - G- S
30°
4
4 Primary Side Piping
Method
6 Center Through Port
Piping Method
6
60
°
°
60
3
. 97
4
p.c.d
2
Notes
1. The rotation side must be fixed the flange part with the bolt,
and restrain only the rotation direction of the stop side.
2. Please use hose for piping of stop side.
3. Please prepare one circuit for drain between them when
5
the oil slick leak from hydraulic circuit to adjacent air circuit
1
becomes a problem.
6
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
6-M8×1.25 Thread Depth 13
5. Each port exhibits a port number.
Stop Side Restriction
Stop Side
Machining Dimensions of Mounting Area
Incomming port
6-Rc-1/4 thread
°
60
13
0
φ115- 0.2
30°
2
5
1
4-M8×1.25×30 Bolt（Included）
Square Spring Washer
Primary Side Port
°
60
+ 0.046
0
6.3S
3 or more
6
30°
φ72H8
C0.6
5
1
35
p.c.d. 1
p.c.d. 9
0
4
2
3
2-Rc-1/2 Thread
(Same Position on Opposite Side)
Center Through Port
0
Secondary Side
Connection Port
6-φ7 or less
（60°Pitch）
4-M8×1.25 Thread Depth 13
（90°Pitch）
Rotating Side
897
d. 9
6
φ155
Outgoing Port
6-Gasket Port
O-ring：1BP10（Included）
p.c.
2.5
10
φ72g7 -0.010
-0.040
35
d. 1
p.c.
60°
4
18
φ18
143
125
3
（φ7 or less）
Note
1. Roughness of mounting surface (O-ring seal surface）
should be 6.3S or less.
Features
Cross Section
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
External Dimensions：JRB0810
※ This drawing indicates JRB0810-S-G-S.
(8 Port Circuit + 1 Center Through Port)
Pneumatic Series
When G thread is necessary for a primary side port or a center
through port, please refer separately.
Model No. Indication
B
B
J RB0 8 1 0 - S - G- S
22.5°
4
4 Primary Side Piping
Method
6 Center Through Port
Piping Method
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
6
45°
45
°
Hydraulic Series
Cautions / Others
Air
Sequence Valve
2
3
. 97
p.c.d
1
Notes
1. The rotation side must be fixed the flange part with the bolt,
Hydraulic
Non-Leak Coupler
and restrain only the rotation direction of the stop side.
4
2. Please use hose for piping of stop side.
8
5
BG A /BG B
3. Please prepare one circuit for drain between them when
the oil slick leak from hydraulic circuit to adjacent air circuit
7
becomes a problem.
6
4. Please avoid continuous operation as it will cause overheating
and damage to the internal packing.
8-M8×1.25 Thread Depth 13
BW D
BG C /BG D
BG P/BG S
BBP/BBS
BNP/BNS
BJP/BJS
5. Each port exhibits a port number.
BFP/BFS
Stop Side Restriction
Auto Coupler
Stop Side
Incoming Port
8-Rc-1/4 Thread
0
φ115 - 0.2
JVA /JVB
JVC /JVD
JVE/JVF
13
Machining Dimensions of Mounting Area
JNA /JNB
JNC /JND
22.5°
45
°
JLP/JLS
Rotary Joint
4
JR
6
5
.d. 13
p.c
3
BEQ
18
Rotating Side
7
2
35
p.c.d. 1
p.c.d. 9
0
6
3
5
Outgoing Port
8-Gasket Port
O-ring：1BP10（Included）
JK A /JK B
BM/BMG
+ 0.046
0
4
A U/A U- M
BU
BP/JPB
BX
BEP/BSP
6.3S
3 or more
1
BLS/BLG
JSS/JS
1
C0.6
45
°
8
BT
BLB
Secondary Side
Connection Port
8-φ7 or less
（45°Pitch）
φ72H8
22.5°
. 90
°
45
2.5
10
8
4-M8×1.25×30 Bolt（Included）
Square Spring Washer
4-M8×1.25 Thread Depth 13
Primary Side Port
（90°Pitch）
φ155
p.c.d
2
7
φ72g7 -0.010
-0.040
Hydraulic Valve
BK
45°
φ18
173
155
5
（φ7 or less）
Note
1. Roughness of mounting surface (O-ring seal surface）
should be 6.3S or less.
BH
BC
Air
Hydraulic Unit
CV
CK
CP
CS
CB
CC
A B/A B- V
A C /A C - V
2Rc-1/2 Thread
（Same Position on Opposite Side)
Center Through Port
898
Rotary Joint Caution
model
JRC/ J RB
Cautions
● Notes for Design
● Installation Notes
1）Check Speciﬁcations
1）Check the Usable Fluid
● Please use each product according to the speciﬁcations.
● Please use the appropriate ﬂuid by referring to the
Hydraulic Fluid List (P.1043).
2）Please hold the rotating direction only on the stop side.
● Please hold the rotating direction on the stop side with
● Air should be clean and free of contaminants.
mounting bolt to avoid oﬀsetting of the rotary joint.
The mounting bolt is included with product.
2） Treatment before Assembly
● Perform ﬂushing of piping and pipe ﬁttings suﬃciently to ensure a
clean environment to avoid malfunctioning. Existence of chips or
3）Please use hose for piping of stop side.
● In case of using steel pipe, it will became a load when rotating.
dusts may cause oil leakage or malfunction.
● Dust and cutting chips in the circuit may lead to ﬂuid leakage
and malfunction.
4） Please avoid continuous operation.
● It will cause heat of internal packing.
● This product is not equipped with protective function to prevent dust
5） Please be careful of oil slick leak when the air circuit and
● In order to prevent foreign substance going into the product during the
and cutting chips going into the hydraulic system and pipeline.
hydraulic circuit are adjacent.
piping work, it should be carefully cleaned before the work is started.
● Please prepare one circuit for drain between them when the
oil leaks from hydraulic circuit to adjacent air circuit becomes
3）Applying Sealing Tape
a problem.（Depending on the model the oil leak from
● Wrap with tape 1 to 2 times following the screw direction.
hydraulic circuit to adjacent air circuit will not occur.）
● Pieces of the sealing tape can lead to oil leakage and malfunction.
● In order to prevent a foreign substance from going into the product
6） The rotating torque changes according to the pressurized
during the piping work, it should be carefully cleaned before working.
condition of the ﬂuid.
● The rotating torque shown in the performance graph is based
(reference) at 0 pressure of ﬂuid.
4）Mounting the Unit
● Install carefully not to damage the O-ring installed in each body.
7） The starting torque might become 2 times or more the
● Use all attached bolts with hex holes (strength division 12.9) and
tighten the body with torque as shown in the table below.
rotating torque.
● The starting torque will vary due to the inﬂuence of exposure time.
8） Center through port is not rotary constitution.
● When center through port is used, such as swivel joint is needed.
※ Please refer to P.1043 for common cautions.
899
・Installation Notes
Model No.
Mounting Bolt
Tightening Torque(N･m)
JRC/JRB
M8×1.25
25
・Hydraulic Fluid List ・Notes on Hydraulic Cylinder Speed Control Circuit
・Notes on Handling ・Maintenance/Inspection ・Warranty
Features
Cross Section
MEMO
Model No. Indication Performance Curve External Dimensions External Dimensions
Specification
(Rotating Torque Reference)
JRC
JRB
Cautions
High-Power
Series
Pneumatic Series
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others
Air
Sequence Valve
BW D
Hydraulic
Non-Leak Coupler
BG A /BG B
BG C /BG D
BG P/BG S
BBP/BBS
BNP/BNS
BJP/BJS
BFP/BFS
Auto Coupler
JVA /JVB
JVC /JVD
JVE/JVF
JNA /JNB
JNC /JND
JLP/JLS
Rotary Joint
JR
Hydraulic Valve
BK
BEQ
BT
BLS/BLG
BLB
JSS/JS
JK A /JK B
BM/BMG
A U/A U- M
BU
BP/JPB
BX
BEP/BSP
BH
BC
Air
Hydraulic Unit
CV
CK
CP
CS
CB
CC
A B/A B- V
A C /A C - V
900
Cautions
Cautions
● Installation Notes (For Hydraulic Series)
● Hydraulic Fluid List
1）Check the Usable Fluid
ISO Viscosity Grade ISO-VG-32
Maker
● Please use the appropriate ﬂuid by referring to the Hydraulic Fluid List.
Showa Shell Sekiyu
2）Procedure before Piping
● The pipeline, piping connector and ﬁxture circuits should be cleaned
by thorough ﬂushing.
● The dust and cutting chips in the circuit may lead to ﬂuid leakage
and malfunction.
● There is no ﬁlter provided with Kosmek s product except for a part
of valves which prevents foreign materials and contaminants from
getting into the circuit.
3）Applying Sealing Tape
● Wrap with tape 1 to 2 times following the screw direction.
● Pieces of the sealing tape can lead to oil leakage and malfunction.
● In order to prevent a foreign substance from going into the product
during the piping work, it should be carefully cleaned before working.
4）Air Bleeding of the Hydraulic Circuit
● If the hydraulic circuit has excessive air, the action time may become
very long. If air enters the circuit after connecting the hydraulic port
or under the condition of no air in the oil tank, please perform
the following steps.
① Reduce hydraulic pressure to less than 2MPa.
② Loosen the cap nut of pipe ﬁtting closest to the clamp by one full turn.
③ Wiggle the pipeline to loosen the outlet of pipe ﬁtting.
Hydraulic ﬂuid mixed with air comes out.
④ Tighten the cap nut after bleeding.
⑤ It is more eﬀective to bleed air at the highest point inside the circuit
or at the end of the circuit.
(Set an air bleeding valve at the highest point inside the circuit.)
5）Checking Looseness and Retightening
● At the beginning of the machine installation, the bolt and nut may
be tightened lightly. Check the looseness and re-tighten as required.
1043
Idemitsu Kosan
JX Nippon Oil & Energy
Anti-Wear Hydraulic Oil Multi-Purpose Hydraulic Oil
Tellus S2 M 32
Morlina S2 B 32
Daphne Hydraulic Fluid 32 Daphne Super Multi Oil 32
Super Hyrando 32
Super Mulpus DX 32
Cosmo Hydro AW32
Cosmo New Mighty Super 32
ExxonMobil
Mobil DTE 24
Mobil DTE 24 Light
Matsumura Oil
Hydol AW-32
Cosmo Oil
Castrol
Note
Hyspin AWS 32
As it may be difficult to purchase the products as shown in the table from
overseas, please contact the respective manufacturer.
Installation Notes
(For Hydraulic Series)
Hydraulic Fluid List
Notes on Hydraulic Cylinder
Speed Control Circuit
Notes on Handling
Maintenance/Inspection
Warranty
High-Power
Series
Pneumatic Series
● Notes on Hydraulic Cylinder Speed Control Unit
！
Please pay attention to the cautions below. Design the hydraulic circuit for controlling the action speed of hydraulic cylinder.
Improper circuit design may lead to malfunctions and damages. Please review the circuit design in advance.
● Flow Control Circuit for Single Acting Cylinder
For spring return single acting cylinders, restricting ﬂow
during release can extremely slow down or disrupt release action.
In the case of meter-out circuit, the hydraulic circuit should
be designed with the following points.
① Single acting components should not be used in the same
The preferred method is to control the ﬂow during the lock action
ﬂow control circuit as the double acting components.
using a valve that has free-ﬂow in the release direction.
The release action of the single acting cylinders may become
It is also preferred to provide a ﬂow control valve at each actuator.
erratic or very slow.
Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others
Cautions
Installation Notes
(For Hydraulic Series)
Hydraulic Fluid List
Notes on Hydraulic Cylinder
Speed Control Circuit
Notes on Handling
Maintenance/
Inspection
Accelerated clamping speed by excessive hydraulic ﬂow to
Warranty
the cylinder may sustain damage. In this case add ﬂow control to
regulate ﬂow. (Please add ﬂow control to release ﬂow if the
lever weight is put on at the time of release action when using
Refer to the following circuit when both the single acting
swing clamps.)
cylinder and double acting cylinder are used together.
Flow Control at the Release Side
○ Separate the control circuit.
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Sales Offices
Ｗ
● Flow Control Circuit for Double Acting Cylinder
Flow control circuit for double acting cylinder should have meter-out
circuits for both the lock and release sides. Meter-in control can
○ Reduce the inﬂuence of double acting cylinder control unit.
have adverse eﬀect by presence of air in the system.
However, due to the back pressure in tank line, single action
However, in the case of controlling LKE, TMA, TLA, both lock side
cylinder is activated after double action cylinder works.
and release side should be meter-in circuit.
Refer to P.47 for speed adjustment of LKE.
For TMA and TLA, if meter-out circuit is used, abnormal high
pressure is created, which causes oil leakage and damage.
【Meter-out Circuit】(Except LKE/TMA/TLA)
② In the case of meter-out circuit, the inner circuit pressure may
increase during the cylinder action because of the ﬂuid supply.
The increase of the inner circuit pressure can be prevented by
reducing the supplied ﬂuid beforehand via the ﬂow control valve.
Especially when using sequence valve or pressure switches for
clamping detection. If the back pressure is more than the set
pressure then the system will not work as it is designed to.
【Meter-in Circuit】(LKE/TMA/TLA must be controlled with meter-in.)
Sequence Valve
Flow Control Valve
(Any location is OK)
1044
Cautions
Cautions
● Notes on Handling
● Maintenance and Inspection
1）It should be handled by qualiﬁed personnel.
1）Removal of the Machine and Shut-oﬀ of Pressure Source
● The hydraulic machine and air compressor should be handled
● Before the machine is removed, make sure that the
and maintained by qualiﬁed personnel.
2）Do not handle or remove the machine unless the safety protocols
are ensured.
① The machine and equipment can only be inspected or prepared
when it is conﬁrmed that the preventive devices are in place.
above-mentioned safety measures are in place. Shut oﬀ the
air of hydraulic source and make sure no pressure exists in
the hydraulic and air circuit.
● Make sure there is no abnormality in the bolts and respective
parts before restarting.
② Before the machine is removed, make sure that the above-mentioned
safety measures are in place. Shut oﬀ the air of hydraulic source
2）Regularly clean the area around the piston rod and plunger.
and make sure no pressure exists in the hydraulic and air circuit.
● If it is used when the surface is contaminated with dirt, it may
③ After stopping the machine, do not remove until the temperature
lead to packing seal damage, malfunctioning , ﬂuid leakage
cools down.
and air leaks.
④ Make sure there is no abnormality in the bolts and respective parts
before restarting the machine or equipment.
3）Do not touch clamps (cylinder) while clamps (cylinder) is working.
Otherwise, your hands may be injured due to clinching.
3） Please clean out the reference surface regularly (taper reference
surface and seating surface) of locating machine .(VS/VT/VL/VM/
VJ/VK/WVS/WM/WK/VX/VXF)
4）Do not disassemble or modify.
● If the equipment is taken apart or modiﬁed, the warranty will be
voided even within the warranty period.
● Location products, except VX/VXF model, can remove
contaminants with cleaning functions.
When installing pallets makes sure there is no thick sludge like
substances on pallets.
● Continuous use with dirt on components will lead to locating
functions not work properly, leaking and malfunction.
4） If disconnecting by couplers on a regular basis, air bleeding
should be carried out daily to avoid air mixed in the circuit.
5）Regularly tighten nuts, bolts, pins, cylinders and pipe line to
ensure proper use.
6）Make sure the hydraulic ﬂuid has not deteriorated.
7）Make sure there is smooth action and no abnormal noise.
● Especially when it is restarted after left unused for a long
period, make sure it can be operated correctly.
8）The products should be stored in the cool and dark place
without direct sunshine or moisture.
9）Please contact us for overhaul and repair.
1045
Installation Notes
(For Hydraulic Series)
Hydraulic Fluid List
Notes on Hydraulic Cylinder
Speed Control Circuit
Notes on Handling
Maintenance/Inspection
Warranty
High-Power
Series
● Warranty
Pneumatic Series
1）Warranty Period
Hydraulic Series
● The product warranty period is 18 months from shipment from
our factory or 12 months from initial use, whichever is earlier.
2）Warranty Scope
● If the product is damaged or malfunctions during the warranty
period due to faulty design, materials or workmanship, we will
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others
replace or repair the defective part at our expense.
Defects or failures caused by the following are not covered.
① If the stipulated maintenance and inspection are not carried out.
② If the product is used while it is not suitable for use based on
the operator s judgment, resulting in defect.
③ If it is used or handled in inappropriate way by the operator.
（Including damage caused by the misconduct of the third party.）
④ If the defect is caused by reasons other than our responsibility.
⑤ If repair or modiﬁcations are carried out by anyone other than Kosmek,
or without our approval and conﬁrmation, it will void warranty.
⑥ Other caused by natural disasters or calamities not attributable to
our company.
⑦ Parts or replacement expenses due to parts consumption and
Cautions
Installation Notes
(For Hydraulic Series)
Hydraulic Fluid List
Notes on Hydraulic Cylinder
Speed Control Circuit
Notes on Handling
Maintenance/
Inspection
Warranty
Company Profile
Company Profile
Our Products
History
deterioration.
(Such as rubber, plastic, seal material and some electric components.)
Damages excluding from direct result of a product defect shall be
excluded from the warranty.
Index
Search by
Alphabetical Order
Sales Offices
1046
Company Profile
Sales Offices
Sales Offices across the World
FAX. +81-78-991-8787
Japan
TEL. +81-78-991-5162
Overseas Sales
KOSMEK LTD. 1-5, 2-chome, Murotani, Nishi-ku, Kobe-city, Hyogo, Japan 651-2241
USA
TEL. +1-630-241-3465
KOSMEK（USA）LTD.
1441 Branding Avenue, Suite 110, Downers Grove, IL 60515 USA
China
TEL.+86-21-54253000
KOSMEK（CHINA）LTD.
考世美(上海)貿易有限公司
〒651-2241
兵庫県神戸市西区室谷2丁目1番5号
FAX. +1-630-241-3834
FAX.+86-21-54253709
21/F, Orient International Technology Building, No.58, Xiangchen Rd, Pudong Shanghai 200122., P.R.China
中国上海市浦东新区向城路58号东方国际科技大厦21F室 200122
FAX. +66-2-715-3453
Thailand
TEL. +66-2-715-3450
Thailand Representative Office
67 Soi 58, RAMA 9 Rd., Suanluang, Suanluang, Bangkok 10250, Thailand
Taiwan
TEL. +886-2-82261860
Full Life Trading Co., Ltd.
16F-4, No.2, Jian Ba Rd., Zhonghe District, New Taipei City Taiwan 23511
(Taiwan Exclusive Distributor)
FAX. +886-2-82261890
盈生貿易有限公司
台湾新北市中和區建八路2號 16F- 4（遠東世紀廣場）
Philippines
(Philippines Exclusive Distributor)
TEL.+63-2-310-7286
G.E.T. Inc, Phil.
Victoria Wave Special Economic Zone Mt. Apo Building, Brgy. 186, North Caloocan City, Metro Manila, Philippines 1427
Europe
(Europe Exclusive Distributor)
TEL. +43-463-287587-10 FAX. +43-463-287587-20
KOS-MECH GmbH
Schleppeplatz 2 9020 Klagenfurt Austria
Indonesia
TEL. +62-21-5818632
(Indonesia Exclusive Distributor)
FAX. +63-2-310-7286
FAX. +62-21-5814857
P.T PANDU HYDRO PNEUMATICS Ruko Green Garden Blok Z-Ⅱ No.51 Rt.005 Rw.008 Kedoya Utara-Kebon Jeruk Jakarta Barat 11520 Indonesia
Sales Offices in Japan
Head Office
Osaka Sales Office
Overseas Sales
Tokyo Sales Office
Nagoya Sales Office
Fukuoka Sales Office
1061
TEL.078-991-5115
〒651-2241
兵庫県神戸市西区室谷2丁目1番5号
TEL.048-652-8839
〒331-0815
FAX.0566-74-8808
愛知県安城市美園町2丁目10番地1
TEL.092-433-0424
〒812-0006
FAX.048-652-8828
埼玉県さいたま市北区大成町4丁目81番地
TEL.0566-74-8778
〒446-0076
FAX.078-991-8787
FAX.092-433-0426
福岡県福岡市博多区上牟田1丁目8-10-101
Global Network
Overseas Aﬃliates and Sales Oﬃces
Distributors
Europe
U.S.A.
Asia
Mexico
Brazil
Australia
Asia Detailed Map
Korea
Japan
China
Taiwan
India
Thailand
Philippines
Malaysia
Singapore
Indonesia
● FOR FURTHER INFORMATION ON UNLISTED SPECIFICATIONS AND SIZES, PLEASE CALL US.
● SPECIFICATIONS IN THIS CATALOG ARE SUBJECT TO CHANGE WITHOUT NOTICE.
JQA-QMA10823
KOSMEK HEAD OFFICE

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