Double Piston
Pneumatic Swing Clamp
Mode lWHD

Advanced pneumatic swing clamp exerts
higher force with double piston mechanism.

PAT.

Features

Double Piston Mechanism allows for both higher cylinder force
and longer stroke of pneumatic swing clamp.
When using Model WHD1001
Lever Length：60 mm

Clamping
Force

High

0.76

kN

Cylinder Force

Air
Pressure
0.5 MPa

φ46 mmLong
Stroke279

Lock
Stroke15mmModel No.
Indication

Features

Specifications

Performance
Curve

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesLong Stroke allows for different clamping heights

Pneumatic Series

of workpieces on the same application.

Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories

Workpiece A

Cautions / Others

Workpiece B

Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp

Compared to pneumatic swing clamp Model WHA, it exerts

W HA
Double Piston
Pneumatic Swing Clamp

equivalent clamping force even with downsized body.
Double Piston Pneumatic Swing Clamp

WHD
Pneumatic
Link Clamp
WCA

Pneumatic Swing Clamp

Long Stroke Model
When using Model WHD1001

When using Model WHA0500(Lock Stroke：15 mm)(Lock Stroke：10 mm)

Air Flow
Control Valve
BZW
Pneumatic
Expansion Locating Pin

Lever Length：60 mm
Lever Length：60 mm

VW M

Clamping
Force

Clamping
Force

kN

kN

0.72

0.76

Downsized

Air
Pressure
0.5 MPa

VW K
Pneumatic
Sensor Pin
WWA

Air
Pressure
0.5 MPa

2 Sizes Down

φ46 mm

φ64 mmEnables smaller footprint and lighter weight of application.
Double Piston Pneumatic Swing Clamp

Long Stroke Model
Fixture Plate

Pneumatic Swing Clamp

Workpiece

Compact
Light

Smaller Footprint of Fixture Plate
280

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

Model No. Indication
Clamp Body

WH D 160 1 - 2 A R - A
1

2

3

4

5

1 Cylinder Force
060： Cylinder Force 0.57 kN (at Air Pressure 0.5MPa)
100： Cylinder Force 0.90 kN (at Air Pressure 0.5MPa)
160： Cylinder Force 1.36 kN (at Air Pressure 0.5MPa)
250： Cylinder Force 2.03 kN (at Air Pressure 0.5MPa)
400： Cylinder Force 3.08 kN (at Air Pressure 0.5MPa)※ Cylinder force is different from clamping force.

2 Design No.
1 ： Revision Number

3 Piping MethodA

A ： Gasket Option (With Ports for Speed Controller)

GS

G ： Gasket Option (with R Thread Plug)S ： Piping Option (Rc Thread)※ Speed control valve (BZW) is sold separately.
Please refer to P.309.

Piping Option

Gasket Option(

attach Speed Control Valve
Order the valve separately
Recommended：BZW-B

Rc Thread
No Gasket Port

With R Thread PlugWith R Thread Plug (able to(

4 Swing Direction when Clamping
R ： Clockwise
L ： Counter-Clockwise

5 OptionA：Quick Change Lever Option A※ Please contact us for details of other options.

281

Swing Direction
when Clamping

R

L

Swing Direction
when ClampingModel No.
Indication

Features

Specifications

Performance
Curve

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesTightening Kit for Quick Change Lever Option A

Pneumatic Series

Hex. Socket

Tightening Kit for mounting Quick Change Lever Option A.
Sold separately from clamp body.
【Contents of Tightening Kit】
・Wedge 1 ・Wedge 2 ・Tightening Bolt

Wedge 1
Tightening Bolt

Rod

WHZ 160 1 - W
1Wedge 2

Pin for Stopper and Phasing

Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others

Pneumatic
Hole Clamp

2

Swing Lever

SW A
Pneumatic
Swing Clamp

1 Corresponding Model No.

W HA

060： WHD0601-2□-A

250： WHD2501-2□-A

100： WHD1001-2□-A

400： WHD4001-2□-A

Double Piston
Pneumatic Swing Clamp
WHD

160： WHD1601-2□-A

Pneumatic
Link Clamp

2 Design No.

WCA
Air Flow
Control Valve

1 ： Revision Number

BZW
Pneumatic
Expansion Locating Pin

Specifications

VW M

Clamp Body

VW K

Model No.
Cylinder Area for Locking

kN(Calculation Formula)

cm3

WHD1001-2□-A

WHD1601-2□-A

WHD2501-2□-A

WHD4001-2□-A

11.5

18.0

27.3

40.6

61.6

P

P

P

P

P

cm2

Clamping Force ※1

Cylinder Capacity

WHD0601-2□-AF=

0.8721+0.00280×L

F=

0.5570+0.00173×L

F=

0.3669+0.00108×L

F=

0.2465+0.00067×L

F=

Lock

24.7

40.4

65.4

103.5

166.2

Release

27.1

43.9

70.2

111.5

179.5

mm

30

37

45

55

68

Rod Diameter ※2

mm

12

14

16

20

25

Full Stroke

mm

21.5

22.5

24

25.5

27

Swing Stroke (90°
)

mm

6.5

7.5

9

10.5

12

Lock Stroke

mm

1.8

3.0

15

Swing Angle Accuracy

90°±3°

Swing Completion Position Repeatability±0.75°
0.5

Max. Operating Pressure MPa
Min. Operating Pressure ※3 MPa

0.2

Withstanding Pressure MPa

0.75

℃

0 ~ 70Operating Temperature

Dry Air

Usable Fluid
Weight ※4
Notes：

WWA

0.1624+0.00039×L

Cylinder Inner Diameter ※2

Air
Pressure

Pneumatic
Sensor Pin

kg

0.6

0.8

1.2

※1. F：Clamping Force (kN), P：Supply Air Pressure (MPa), L：Distance between the piston center and the clamping point (mm).
※2. Clamping force cannot be calculated from the cylinder inner diameter and rod diameter. Please refer to the clamping force curve.
L※3. Minimum pressure to operate the clamp without load.
※4. It shows the weight of single swing clamp without the tightening kit and swing lever.
F

Tightening Kit for Quick Change Lever Option A
Model No.
Corresponding Model No.
Nominal×Pitch of Tightening Bolt

WHZ0601-W

WHZ1001-W

WHZ1601-W

WHZ2501-W

WHZ4001-W

WHD0601-2□-A

WHD1001-2□-A

WHD1601-2□-A

WHD2501-2□-A

WHD4001-2□-A

M4×0.7

M4×0.7

M4×0.7

M5×0.8

M6×1

Hex. Socket

mm

3

3

3

4

5

Tightening Torque

N・m

2.5

2.5

2.5

5.0

8.0

282

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

Clamping Force Curve

L : Lever Length (mm)(How to Read the Clamping Force Curve)
In case of WHD1601 : When supply air pressure P is 0.4MPa andlever length L is 60mm, clamping force becomes about 0.93kN.

F :Clamping Force (kN)s

P ：Air Pressure (MPa)

Notes：※1. F ： Clamping Force (kN), P ： Supply Air Pressure (MPa), L ： Lever Length (mm).
1. Tables and graphs show the relationship between the clamping force (kN) and supply air pressure (MPa).
2. Cylinder force (when L=0) cannot be calculated with the formula of clamping force.
3. Lever with a large inertia sometimes does not work depending on supply air pressure and lever mounting position.
4. Values in below charts indicate clamping force when the lever locks a workpiece in horizontal position.
5. The clamping force varies depending on the lever length. Set the suitable supply air pressure based on the lever length.
6. Clamping force in the non-usable range may cause damage and fluid leakage.

(MPa)

(kN)

0.5

P
0.8721+0.00280×L

Clamping Force (kN) Non-Usable Range(■)

Maximum

Lever Length L (mm)Lever Length

60

80

100

0.57

0.51

0.48

0.46

0.43

0.4

0.46

0.41

0.38

0.37

0.35

0.33

0.31

166

0.3

0.34

0.30

0.29

0.27

0.26

0.25

0.23

180

0.2

0.23

0.20

0.19

0.18

0.17

0.16

0.15

180

0.5

0.5

0.5

0.5

0.49

0.43

WHD1001
Air Pressure Cylinder Force

125

(mm)

40

Max. Operating Pressure (MPa)

150

120

Clamping Force Calculation Formula ※1 (kN)F=

P
Maximum

Lever Length L (mm)Lever Length

(kN)

0.5

0.90

0.80

0.76

0.72

0.68

0.65

0.4

0.72

0.64

0.61

0.58

0.55

0.52

0.49

173

0.3

0.54

0.48

0.45

0.43

0.41

0.39

0.37

180

0.2

0.36

0.32

0.30

0.29

0.27

0.26

0.24

180

0.5

0.5

0.5

0.5

0.5

0.44

WHD1601
Air Pressure Cylinder Force
(MPa)

(kN)

0.5

60

80

100

125

Clamping Force Calculation Formula ※1 (kN)

F=

(mm)

150

125

0.4
0.3
0.2

Non-Usable Range (■)

0.3

0.4

0.5

1.0
Cylinder Force
L=40(s=15)
L=60(s=35)
L=80(s=55)
L=100(s=75)
L=125(s=100)
L=150(s=125)

0.8
0.6
0.4
0.2
0.2

P

Non-Usable Range (■)

0.3

0.4

0.5

Clamping Force (kN) Non-Usable Range(■)

Maximum

Lever Length L (mm)Lever Length
(mm)

1.6
1.4

L=40(s=12)
L=60(s=32)
L=80(s=52)
L=100(s=72)
L=125(s=97)
L=150(s=122)

1.0

60

80

100

125

1.36

1.22

1.16

1.10

1.05

1.00

0.4

1.09

0.98

0.93

0.88

0.84

0.80

0.76

172

0.6

0.3

0.82

0.73

0.70

0.66

0.63

0.60

0.57

200

0.4

0.2

0.55

0.49

0.46

0.44

0.42

0.40

0.38

200

0.5

0.5

0.5

0.5

0.5

0.44

0.2
0.2

125

Cylinder Force

1.2

40

Max. Operating Pressure (MPa)L=40(s=17.5)
L=60(s=37.5)
L=80(s=57.5)
L=100(s=77.5)
L=125(s=102.5)
L=150(s=127.5)

Supply Air Pressure (MPa)0.3669+0.00108×L

150

Cylinder Force

0.5

0.1
0.2

0.5570+0.00173×L

Clamping Force (kN) Non-Usable Range(■)
40

0.6Supply Air Pressure (MPa)(MPa)

Max. Operating Pressure (MPa)

283

F=

Clamping Force (kN)

Air Pressure Cylinder Force

Clamping Force Calculation Formula ※1 (kN)

Clamping Force (kN)

WHD0601

0.8
Non-Usable Range (■)

0.3

0.4

Supply Air Pressure (MPa)0.5Features

Model No.
Indication

Specifications

Performance
Curve

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesPneumatic Series

Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others

Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp
W HA
Double Piston
Pneumatic Swing Clamp
WHD
Pneumatic
Link Clamp
WCA
Air Flow
Control Valve
BZW
Pneumatic
Expansion Locating Pin

(MPa)

(kN)

VW M

P
0.2465+0.00067×L

Clamping Force (kN) Non-Usable Range(■)

Maximum

Lever Length L (mm)Lever Length

60

80

100

125

150

(mm)

200

0.5

2.03

1.74

1.67

1.60

1.51

1.44

0.4

1.62

1.40

1.33

1.28

1.21

1.15

1.05

240

0.3

1.22

1.05

1.00

0.96

0.91

0.86

0.79

270

0.2

0.81

0.70

0.67

0.64

0.61

0.58

0.53

270

0.5

0.5

0.5

0.5

0.5

0.45

Max. Operating Pressure (MPa)

WHD4001
Air Pressure Cylinder Force
(MPa)

(kN)

0.5

Clamping Force Calculation Formula ※1 (kN)

F=

170

VW K
Pneumatic
Sensor Pin
WWA

L=200(s=167)

1.0
Non-Usable Range (■)

0.3

0.4

0.5

Supply Air Pressure (MPa)Clamping Force (kN) Non-Usable Range(■)

Maximum

Lever Length L (mm)Lever Length
(mm)

80

100

150

200

3.08

2.69

2.58

2.48

2.26

2.07

0.4

2.46

2.15

2.06

1.98

1.81

1.66

1.53

330

0.3

1.85

1.61

1.55

1.49

1.36

1.24

1.15

330

0.2

1.23

1.08

1.03

0.99

0.90

0.83

0.77

330

0.5

0.5

0.5

0.5

0.5

0.47

230

Cylinder Force

3.0

0.1624+0.00039×L

60

Max. Operating Pressure (MPa)L=60(s=27)
L=80(s=47)
L=100(s=67)
L=125(s=92)
L=150(s=117)

1.5

0.5
0.2

P

250

Cylinder Force

2.0
Clamping Force (kN)

Air Pressure Cylinder ForceF=

Clamping Force (kN)

WHD2501

Clamping Force Calculation Formula ※1 (kN)

L=60(s=21)
L=80(s=41)
L=100(s=61)

2.5

L=150(s=111)
L=200(s=161)
L=250(s=211)

2.0
1.5
1.0
0.5
0.2

Non-Usable Range (■)

0.3

0.4

0.5

Supply Air Pressure (MPa)284

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

Allowable Swing Time Graph
Adjustment of Swing Time

90°Swing(Swing Stroke)

The graph shows allowable swing time against the moment of inertia of a lever.
An operation time should be longer than the operation time shown in the graph.

(Vertical Stroke)

Full Stroke(TotalOperation Time)

Excessive action speed can reduce stopping accuracy and damage internal
components.

WHD0601

WHD1001

0.00250.005
90°Swing

0.00200.00150.0010(Full Stroke：Reference)

0.00050.000240

Moment of Inertia of Lever (kg・m 2 )Moment of Inertia of Lever (kg・m 2 )90°Swing

0.003

0.002

(Full Stroke：Reference)

0.001
0.00044

※1

0

0.004

1.0
1.5
0.2 0.5
Allowable Locking / Releasing Time (sec)

0

2.0

※1

0

0.014
90°Swing

Moment of Inertia of Lever (kg・m 2 )Moment of Inertia of Lever (kg・m 2 )

0.010

0.008

0.006

0.004
(Full Stroke：Reference)
0.002
※1

0

0.5

1.0

1.5

0.2
Allowable Locking / Releasing Time (sec)

2.0

WHD4001
0.020
Moment of Inertia of Lever (kg・m 2 )0.018

90°Swing

0.016
0.014
0.012
0.010
0.008
(Full Stroke：Reference)

0.006
0.004

0.0024

0.002

285

0.012

90°Swing

0.010
0.008
0.006
0.004

(Full Stroke：Reference)

0.002

0.00140.00090

2.0

WHD2501

WHD16010

1.0
1.5
0.2 0.5
Allowable Locking / Releasing Time (sec)

※1

0

0.5
1.0
0.2
Allowable Locking / Releasing Time (sec)

1.5

0

※1

0

0.5
1.0
0.2
Allowable Locking / Releasing Time (sec)

1.5

Notes：※1. For any moment of inertia of a lever, the minimum 90°swing time shouldbe 0.2 sec.
1. The graph shows the allowable action time with respect to the momentof inertia of lever when the piston rod operates at constant speed.
2. Lever with a large inertia sometimes does not work depending on
supply air pressure, air flow rate and lever mounting position.
3. For speed adjustment of clamp lever, please use meter-out flow
control valve. In case of meter-in control, the clamp lever may be
accelerated by its own weight during swinging motion (clamp
mounted horizontally) or the piston rod may be moving too fast.
(Please refer to P.291 for swing speed adjustment.)
4. Excessive swing speed can reduce stopping accuracy and damage
the internal parts.
5. Please contact us if operational conditions differ from those shownon the graphs.

Model No.
Indication

Features

Specifications

Performance
Curve

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesModel

WHD1601

Pneumatic Series

0.010

Moment of Inertia of Lever (kg・m 2 )(How to Read the Allowable Swing Time Graph)
In case of WHD1601
The moment of inertia of a lever ： 0.0035kg・m① 90°Swing Time2

： About 0.39 sec or more

② Total Operation Time ： About 1.05 sec or more
1．The total operation time on the graph represents
the allowable operation time when fully stroked.

Hydraulic Series

90°Swing
0.008

Valve / Coupler
Hydraulic Unit

0.006

Manual Operation
Accessories

0.004(Full Stroke：Reference)

0.0035

Cautions / Others

0.002

①
0

0

②

0.5

1.0

1.5

2.0

Allowable Locking / Releasing Time (sec)Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp
W HA
Double Piston
Pneumatic Swing Clamp

How to Calculate the Moment of Inertia (Estimated)：Moment of Inertia (kg・m 2 )WHD

L,L 1 ,L 2 ,K,b：Length (m)Pneumatic
Link Clamp

m,m 1 ,m 2 ,m 3：Mass (kg)

WCA

① For a rectangular plate (cuboid),
the rotating shaft is vertically on
one side of the plate.

L1
m2

=m1

L

② For a rectangular plate (cuboid),
the rotating shaft is vertically on
the gravity center of the plate.

③ Load is applied on the lever front end.

BZW

L

b

m

m2

Pneumatic
Expansion Locating Pin
VW M

L1

L
m1

L2

K

b

b

Air Flow
Control Valve

VW K

m1

m3

Pneumatic
Sensor Pin
WWA

4L 2 + b 2
4 L 12+ b 2
+m2
12
12

=m

L 2+ b 2
12=m1

4 L 2+ b 2
4 L 12+ b 2
L 2 2 +b 2
+m2
+ m 3K 2+ m 3
12
12
12

286

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

External Dimensions※1. Slot for Lever Phasing

A : Gasket Option (With Ports for Speed Controller：R-Thread Plug Included)

Released State※ The drawing shows the released state of WHD□-2AR-A.
Release Port：Rc1/8 Thread ※3

max.17HJ
2-Z
R Type

φ15.5

CA
CA

C

□K

Common for R/L typeB

R1/8 Thread Plug (Included)(Only for option -A：
Speed Control Valve Port)

2-Slot for Lever Phasing
Swing Direction
When Clamping

L

Machining Dimensions of Mounting Area
Nx ※6

φ

2-Slot for Stopper and Lever Phasing※1(Prepared by Customer)

Pin for Stopper and Phasing(Prepared by Customer)CC

Tightening Kit
WHZ□-W (Sold Separately)※6

Swing Lever

Release PortφP※6※6

R1/8 Thread Plug (Included)(Only for option -A：
Speed Control Valve Port)L Type4-φR
Spot FacingφQ

SC Screw

※3

Ny Ny

Lock Port：Rc1/8 Thread

Locked State

L typeR typeLock Port φP※6
4-EA Thread※4

□K

SA

CB

Remove all burrs ※6
C0.6

Fu

SB

6.3S※6

+0.3

φD 0

φU
12゜

F

E

A

M

S ※2

G

※5

-0.1

φD -0.2

Notes：※4. EA tapping depth of the mounting bolt should be decided
according to the mounting height referring to dimension 'S'.
※5. The depth of the body mounting hole φD should be decided
according to the mounting height referring to dimension 'F'.
※6. The machining dimension is for -A/-G：Gasket Option.

Piping Method
G：Gasket Option (With R Thread Plug)
Nx※ The drawing shows the released state of WHD□-2GR-A.
2-R1/8 Thread Plug (Included)

max. 1.5mm

Ny Ny

Lock Port：O-ring (Included)(Option -A/-G)

Release Port：O-ring (Included)(Option -A/-G)

S：Piping Option (Rc Thread)※ The drawing shows the released state of WHD□-2SR-A.

Notes：

Release Port
Rc1/8 Thread※2. Mounting bolts are not provided. Please prepare themaccording to the mounting height referring to dimension 'S'.
※3. Speed control valve is sold separately. Please refer to P.309.
1. Please contact us if it has a combination with other options.
Lock Port
Rc1/8 Thread287

Model No.
Indication

Features

Performance
Curve

Specifications

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesModel No. Indication

A
R- A
WHD 160 1 - 2 G
L
S
2

1

4

3

(Format Example：WHD1001-2AR-A, WHD2501-2SL-A)
1 Cylinder Force

2 Design No.
3 Piping Method

5

Pneumatic Series

Hydraulic Series
Valve / Coupler
Hydraulic Unit

4 Swing Direction When Clamping

Manual Operation
Accessories

5 Option (In case of A)

Cautions / Others

Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp
W HAExternal Dimensions and Machining Dimensions for Mounting
Model No.

(mm)

WHD0601-2□-A WHD1001-2□-A WHD1601-2□-A WHD2501-2□-A WHD4001-2□-A

Full Stroke

21.5

22.5

24

25.5

27

Swing Stroke (90°
)

6.5

7.5

9

10.5

12

Lock Stroke

15

15

15

15

15

A

150.5

158

168

184

206

B

54

60

66

76

87

WHD
Pneumatic
Link Clamp
WCA
Air Flow
Control Valve

C

45

50

56

66

78

D

40

46

54

64

77

E

107

111

117

126.5

141

F

82

86

92

96.5

111

Pneumatic
Expansion Locating Pin

Fu

68.5

72

76

87.5

95

VW M

G

25

25

25

30

30

VW K

H

31.5

35

38

43

48

J

22.5

25

28

33

39

Pneumatic
Sensor Pin

K

34

39

45

53

65

WWA

L

72

79

88

98

113

M

11

11

11

13

13

Nx

26

28

31

36

41

Ny

9

10

13

15

20

P

3

5

5

5

5

Q

9.5

9.5

9.5

11

11

R

5.5

5.5

5.5

6.8

6.8

S

15.5

14

13.5

16

15

U

12

14

16

20

25

Z (Chamfer)

C3

R5

R5

R6

R6

CA

4.3

4.3

5.8

6.8

8.8

CB

10.25

CC

2.5 +0.014+0.028EA

11.5+0.0283 +0.014

1415+0.0384 +0.020

M5×0.8

M5×0.8

M5×0.8

SA

20

22.5

SB

23.5

24.5

SC (Nominal×Pitch×Depth)

M4×0.7×7

M4×0.7×7

O-ring (Piping Option -A/-G)

1BP5

Pin for Stopper and Phasing φ2.5(m6)×6
Cylinder Capacity
Weight ※7

Double Piston
Pneumatic Swing Clamp

BZW

17.5
+0.0384 +0.020+0.0384 +0.020

M6×1

M6×1

25

30

36

26

27.5

29

M4×0.7×7

M5×0.8×8

M6×1×11

1BP7

1BP7

1BP7

1BP7

φ3(m6)×8

φ4(m6)×8

φ4(m6)×10

φ4(m6)×14

Lock

24.7

40.4

65.4

103.5

166.2

cm3 Release

27.1

43.9

70.2

111.5

179.5

kg

0.6

0.8

1.2

1.8

3.0

Note： ※7. It shows the weight of single swing clamp without the tightening kit and swing lever.

288

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

Quick Change Lever Option A Design Dimensions※ Reference for designing Quick Change Swing Lever Option A.
Corresponding Model No.

WHD

A
R
1 - 2 G L
S

- A

1 Cylinder ForceφB + 00.05

EF±0.05G

K ThreadφJH7
Pin Hole for Stopper and Phasing

C

H

D±0.1

C0.6

(mm)
Corresponding WHD0601 WHD1001 WHD1601 WHD2501 WHD4001-2□-A -2□-A -2□-A -2□-A -2□-A
Model No.
A

12 + 0.027
014 + 0.027
016 + 0.027
020 + 0.033
025 + 0.033
0

B

10.5

12

12

15

20

C

14

16

18

22

26

D

9.5

11

11

13

17

E

10.5

12.5

14

17

23

F

10.75

12

13

16

18.5

G

1.25

2

2

2.5

4.5

H

2.5

3

4

4

4

J

2.5 + 0.010
0

3 + 0.010
0

4 + 0.0120

4 + 0.0120

4 + 0.012
0K

M4×0.7 M4×0.7 M4×0.7 M5×0.8

M6×1

Pin for Stopper φ2.5(m6) φ3(m6) φ4(m6) φ4(m6) φ4(m6)and Phasing
×6
×8
×8
×10
×14
Notes：
1. Swing lever should be designed with its length according to performance
curve on P.283.
2. If the swing lever is not in accordance with the dimension shown above,
performance may be degraded and damage can occur.

C0.6

φAH8

3. The pin hole for stopper and phasing (φJ) should be appropriately
machined according to the slot for lever phasing on the clamp body.
Pin for stopper and phasing (prepared by customer) is used as phasing when
mounting the lever and as stopper when removing the lever. If you are notusing a pin for stopper and phasing, a stopper is required to remove the lever.
4. Tightening Kit (WHZ□-W) for Quick Change Lever Option A is sold separately.

289

Model No.
Indication

Features

Specifications

External
Dimensions

Performance
Curve

Lever Design
Dimensions

High-Power
SeriesAccessories：Material Swing Lever for Quick Change Lever Option A
Model No. Indication

Size(Refer to the table.)

Design No.
(Revision Number)

Pneumatic Series

Corresponding WHD0601 WHD1001 WHD1601 WHD2501 WHD4001-2□-A -2□-A -2□-A -2□-A -2□-A
Model No.

Hydraulic SeriesE

B

φH + 00.05

D

G±0.05K(mm)

WHZ0600 WHZ1000 WHZ1600 WHZ2500 WHZ4000
-A
-A
-A
-A
-A

Model No.

WH Z 160 0 - A

Cautions

Accessories

L Thread

A

90

90

125

150

170

B

21

25

28

34

45

C

14

16

18

22

26

D

10.5

12.5

14

17

23

Manual Operation
Accessories

E

10.5

12.5

14

17

22.5

F

12 + 0.027
014 + 0.027
016 + 0.027
020 + 0.033
025 + 0.033
0

G

10.75

12

13

16

18.5

H

10.5

12

12

15

20

J

9.5

11

11

13

17

K

1.25

2

2

2.5

4.5

M4×0.7

M5×0.8

M6×1

LA

Valve / Coupler
Hydraulic Unit

M4×0.7 M4×0.7

Cautions / Others

Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp
W HA

Notes：

C0.6

C

J±0.1

1. Material : S50CH

Surface Finishing：Alkaline Blackening

2. If necessary, the front end should be additionally machined and finished.
3. The pin hole for stopper and lever phasing should be additionally machinedby referring to Quick Change Lever Option A Design Dimensions.

C0.6

4. Tightening Kit (WHZ□-W) for Quick Change Lever Option A is sold separately.

φFH8

Double Piston
Pneumatic Swing Clamp
WHD
Pneumatic
Link Clamp
WCA
Air Flow
Control Valve
BZW
Pneumatic
Expansion Locating Pin
VW M
VW K

Accessory：Tightening Kit for Quick Change Lever Option A

Pneumatic
Sensor Pin

Hex. Socket

Tightening Kit for mounting Quick Change Lever Option A.
Sold separately from clamp body.
【Contents of Tightening Kit】
・Wedge 1 ・Wedge 2 ・Tightening Bolt

Wedge 1
Tightening Bolt

Rod

Wedge 2

Pin for Stopper and Phasing

WHZ 160 1 - W
1WWA

Swing Lever

2

1 Corresponding Model No.
060： WHD0601-2□-A

250： WHD2501-2□-A

100： WHD1001-2□-A

400： WHD4001-2□-A

160： WHD1601-2□-A

2 Design No.
1 ： Revision Number

Model No.
Corresponding Model No.
Nominal×Pitch of Tightening Bolt

WHZ0601-W

WHZ1001-W

WHZ1601-W

WHZ2501-W

WHZ4001-W

WHD0601-2□-A

WHD1001-2□-A

WHD1601-2□-A

WHD2501-2□-A

WHD4001-2□-A

M4×0.7

M4×0.7

M4×0.7

M5×0.8

M6×1

Hex. Socket

mm

2.5

2.5

2.5

3

4

Tightening Torque

N・m

2.5

2.5

2.5

5.0

8.0

290

Double Piston Pneumatic Swing Clampm od e l W H DLong Stroke Model

Cautions● Notes for Design
1) Check Speciﬁcations

7) Notes for Lever Design● Please use each product according to the speciﬁcations.

● Please design the lever as light as possible, and it should be nolarger than necessary.

2) Notes for Circuit Design

The clamp may not function depending on supplying air pressure,● Ensure there is no possibility of supplying air pressure to the lockmounting position and shape of the lever. If using a large leverport and the release port simultaneously. Improper circuit designin the mounting position as shown below, it may stop in the middle

may lead to malfunctions and damages.

of swing action. Please use a lever with (Lever Weight W) × (Gravity
Center S) lighter than shown in the following table.

3) Swing lever should be designed to make the moment of inertia small.
● Large inertia moment will degrade the lever's stopping accuracy andScause undue wear to the clamp.
Additionally, the clamp may not function, depending on supplied
air pressure and lever mounting position.
● Set the allowable operation time after the moment of inertia is calculated.

Lever

Refer to "Allowable Swing Time Graph" and make sure to operateWclamps within the allowable operation time.
● If supplying a large amount of air right after installation, action
time will be extremely fast leading to severe damage on a clamp.
Install the speed controller (Meter-in) near the air source andModel No.

(Lever Weight W) × (Gravity Center S) (N･m)

WHD0601

0.08

gradually supply air pressure.

WHD1001

0.10

WHD1601

0.20

WHD2501

0.45

WHD4001

0.904) Protect the exposed area of the piston rod when using on a welding ﬁxture.
● If spatter attaches to the sliding surface it could lead to malfunction and

8) When using an oﬀset lever.

air leakage.

● Clamping point should be in the range of 90°towards the lever● Make sure the clamping surface and the mounting surface ofthe clamp are parallel.

tightening part.

90°

Ex.1
Range ofClamping Point

Lever Tightening Part

If the clamp operates too fast the parts will be worn out leading
to premature damage and ultimately complete equipment failure.
● Install a speed control valve (meter-out) and gradually control
the ﬂow rate from the low-speed side (small ﬂow) to the designatedspeed. Controlling from the high-speed side (large ﬂow) causes
excessive surge pressure or overload to the clamp leading to damageof a machine or device.

Lock
ReleaseMeter-inMeter-out

Recommended Circuit Diagram● When operating multiple clamps simultaneously, please install
the speed controller (meter-out) to each clamp.

291

Ex.2

°

● Adjust the speed following "Allowable Swing Time Graph".

906) Swing Speed Adjustment

Max. Lever Length5) When clamping on a sloped surface of the workpieceFeatures

Model No.
Indication

Specifications

Performance
Curve

External
Dimensions

Lever Design
Dimensions

Accessories

Cautions

High-Power
SeriesPneumatic Series● Installation Notes
1) Check the Usable Fluid● A pin for stopper and phasing (prepared by customer) is used

● Please supply ﬁltered clean dry air. (Install the drain removing device.)for phasing when mounting the lever and as a stopper when

● Oil supply with a lubricator etc. is unnecessary.

removing the lever. If you are not using the pin for stopper andOil supply with a lubricator may cause loss of the initial lubricant.

phasing, a stopper is required to remove the lever.

The operation under low pressure and low speed may be unstable.
(When using secondary lubricant, please supply lubricant continuously.
Otherwise, the initial grease applied from KOSMEK will be removed

Stopper example for lever removal when
not using the pin for stopper and phasing.

Hydraulic Series
Valve / Coupler
Hydraulic Unit
Manual Operation
Accessories
Cautions / Others

Pin for Stopper and Phasingfrom the secondary lubricant.)

Pneumatic
Hole Clamp

2) Procedure before Piping

SW A● The pipeline, piping connector and ﬁxture circuits should be

Pneumatic
Swing Clamp

cleaned by thorough ﬂushing. Dust and cutting chips in thecircuit can lead to air leakage and malfunction.

W HA● There is no ﬁlter provided with this product that prevents

Stopper

Double Piston
Pneumatic Swing Clamp

contamination in the air circuit.

WHD3) Applying Sealing Tape

Pneumatic
Link Clamp● Wrap with tape 1 to 2 times following the screw direction.

WCA● Pieces of the sealing tape can lead to air leakage and malfunction.
● In order to prevent contamination during the piping work, it should

Air Flow
Control Valvebe carefully cleaned before working.

BZW● Installation Procedure4) Installation of the Product① Install in order of swing lever, wedge 1, wedge 2 to the rod.

● When mounting the product use four hexagonal socket bolts② Pull the lever towards the wedge side and tighten the(with tensile strength of 12.9) and tighten them with the torquetightening bolt with the speciﬁed torque.

shown in the list below. Tightening with greater torque thanrecommended can dent the seating surface or break the bolt.
Model No.

Thread Size

Tightening Torque (N･m)

WHD0601

M5×0.8

6.3

WHD1001

M5×0.8

6.3

WHD1601

M5×0.8

6.3

WHD2501

M6×1

10

WHD4001

M6×1

10

Pneumatic
Expansion Locating Pin
VW M
VW K
Pneumatic
Sensor Pin● Removal Procedure① By loosening the tightening bolt, the wedges are released

WWA

and the lever can be removed.

Wedge 1

5) Installation of the Flow Control Valve

Pin for Stopperand Phasing● Tightening torque for installing ﬂow control valve is 5 to 7 N・m.

Rod

Tightening Bolt
Wedge 2

6) Installation / Removal of the Swing Lever● Oil or debris on the tightened parts of the lever, taper sleeve or

Swing Leverpiston rod may cause the lever to loosen. Please clean themthoroughly before installation.
● Tighten the tightening bolt of swing lever with the torque shown below.
Tightening with greater torque than recommended can damage● Adjust the speed following "Allowable Swing Time Graph".
If the clamp operates too fast the parts will be worn out leading

the bolt and lever tightening function.
WHD-A：Quick Change Lever Option A
Tightening Bolt SizeModel No.
M4×0.7
WHD0601-2□-A7) Swing Speed Adjustment

to premature damage and ultimately complete equipment failure.
Tightening Torque (N･m)
2.5● Turn the speed control valve gradually from the low-speed side(small ﬂow) to the high-speed side (large ﬂow) to adjust the speed.

WHD1001-2□-A

M4×0.7

2.5

WHD1601-2□-A

M4×0.7

2.5

WHD2501-2□-A

M5×0.858) Checking Looseness and Retightening

WHD4001-2□-A

M6×1

8

● At the beginning of the product installation, the bolt and nut may
be tightened lightly. Check the looseness and re-tighten as required.

※ Please refer to P.1357 for common cautions.

・Notes on Handling・Maintenance/Inspection ・Warranty292

Cautions
Cautions● Notes on Handling● Maintenance and Inspection1) It should be operated by qualiﬁed personnel.

1) Removal of the Machine and Shut-oﬀ of Pressure Source● The hydraulic machine and air compressor should be operated● Before the machine is removed, make sure that safety devices

and maintained by qualiﬁed personnel.

and preventive devices are in place. Shut oﬀ the pressure andpower source, and make sure no pressure exists in the air and2) Do not operate or remove the product unless the safety protocols
are ensured.
① The machine and equipment can only be inspected or preparedhydraulic circuits.
● Make sure there is no abnormality in the bolts and respective
parts before restarting.

when it is conﬁrmed that the safety devices are in place.
② Before the product is removed, make sure that the above-mentioned
safety devices are in place. Shut oﬀ the pressure and power source,
and make sure no pressure exists in the air and hydraulic circuits.

2) Regularly clean the area around the piston rod and plunger.
● If it is used when the surface is contaminated with dirt, it may leadto packing seal damage, malfunctioning and ﬂuid leakage.

③ After stopping the product, do not remove until the temperaturedrops.
④ Make sure there is no abnormality in the bolts and respective parts
before restarting the machine or equipment.
3) Do not touch a clamp (cylinder) while it is working.
Otherwise, your hands may be injured due to clinching.

3) Please clean out the reference surfaces on a regular basis (taper
reference surface and seating surface) of the locating products.
(VS/VT/VFL/VFM/VFJ/VFK/WVS/VWM/VWK/VX/VXE/VXF)● The locating products, except VX/VXE/VXF model, can remove
contaminants with cleaning functions. However, hardened cutting4) Do not disassemble or modify.
● If the equipment is taken apart or modiﬁed, the warranty will be
voided even within the warranty period.

chips, adhesive coolant and others may not be removed. Make surethere are no contaminants before installing a workpiece/pallet.
● Continuous use with contaminant on components will lead tolocating accuracy failure, malfunction and ﬂuid leakage.

4) If disconnecting by couplers, air bleeding should be carried out
on a regular basis to avoid air mixed in the circuit.
5) Regularly tighten nut, bolt, pin, cylinder, pipe line and others toensure proper use.
6) Make sure the hydraulic ﬂuid has not deteriorated.
7) Make sure there is a smooth action without an irregular 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.

1357

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 fromour 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.

Cautions① If the stipulated maintenance and inspection are not carried out.

Installation Notes(For Hydraulic Series)② If the product is used while it is not suitable for use based on

Hydraulic Fluid List

the operatorʼs judgment, resulting in defect.
③ If it is used or operated in an 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 toour company.
⑦ Parts or replacement expenses due to parts consumption anddeterioration.
(Such as rubber, plastic, seal material and some electric components.)
Damages excluding from direct result of a product defect shall be

Notes on Hydraulic Cylinder
Speed Control Circuit
Notes on Handling
Maintenance/
Inspection
Warranty

Company Profile
Company Profile
Our Products
History

Index
Search by
Alphabetical Orderexcluded from the warranty.
Sales Offices1358

Air Flow Control Valve
Mode lB ZW

Directly mounted to clamps, easy adjusting

Directly Mounted to Clamps
BZW is the flow control valve for Rc thread that enable to mountto the piping method : option -A of WCA/WCE/WHA/WHD/WHE.
It is best used in a circuit where the flow control valve cannot
be mounted or if necessary to synchronize individual speed.

Adjusting Screw

Lock Nut

Corresponding Product Model
ClampsBZW Model No.

Clamp Model No.

High-Power Pneumatic Link Clamp

BZW0100-A

WCE□ 2-2 A □High-Power Pneumatic Swing Clamp

WHE□ 0-2 A □Pneumatic Swing Clamp

WHA□ 0-2 A □Corresponding to piping method -A option.
※ When mounting BZW to the piping method G,
take off R thread plug and remove the sealing

BZW0100-B

309

Double Piston Pneumatic Swing Clamp

WHD□1-2 A □Pneumatic Link Clamp

WCA□ 1-2 A □tape not to get inside the cylinder.

Air Flow Control Valve
DigestModel No. Indication

High-Power
SeriesBZ W 010 0 - B

Pneumatic Series

Control Method
B : Meter-out
A : Meter-in

Hydraulic Series※ Select A：Meter-in when using BZW for WCE.

Valve / Coupler
Hydraulic Unit

Design No.
0 : Revision Number

Manual Operation
Accessories

R Thread Size
010 : Rc1/8

Cautions / Others

Specifications

Circuit Symbol

Model No.

BZW0100-B

BZW0100-A

Control Method

Meter-outMeter-inOperating Pressure MPa
Withstanding Pressure MPa

0.1 ~ 1.0

Adjusting Screw Number of Rotations

10

P1 PortAir Source Side
(Incoming Side)

5~7

g

Weight

BZW0100-B：Meter-out

1.5

N・m

Tightening Torque13

Pneumatic
Hole Clamp
SW A
Pneumatic
Swing Clamp

P2 PortClamp Side
(Outgoing Side)W HA
Double Piston
Pneumatic Swing Clamp
W HD

BZW0100-A：Meter-in

13

Pneumatic
Link Clamp

WHE□0-2A□
Corresponding
Model No.

WHA□0-2A□

P1 PortAir Source Side
(Incoming Side)

WCE□2-2A□

WHD□1-2A□
WCA□1-2A□

Adjusting Screw

O-ring (Included)

Lock Nut[ L/ min(ANR) ]11.5 ~ 17100

Flow Rate

φ15.5
φ11
φ8

direction of BZW-A
is opposite.)

4 3.5

40

Machining Dimensions of Mounting Area
6.3S

WWA

Pressure Loss 0.5MPa

80
Pressure Loss 0.4MPa

60

Pressure Loss 0.3MPa
Pressure Loss 0.2MPa20014.8 or more

01

←Close

2

3

4

5

6

7

8

Adjust Screw Number of Rotations [Rotations]

9

10

Open→

8.8 ±0.1

0.7 + 0.1
0Free Flowing Direction

6.3S
Remove all burrs

φ2.5 ~ 3.5

45゜
6.3

A

[ L/ min(ANR) ]

6.3S

120
100

Flow Rate(φ8.2)

φ10 or less

20゜

P2 PortClamp Side
(Outgoing Side)

φ7.8 ±0.02

0.1 or less
C0.1

φ13.8 H7 + 0.018
0Pneumatic
Sensor Pin

Controlled Flow Direction

BZW-B (Mounting

Close Open

Rc1/8 Thread
Prepared Hole 8.2 + 0.1
0

VW K

120

Packing

φ0.01 A

VW M

BZW0100-B/BZW0100-A common(Rc1/8)0.01 A

Pneumatic
Expansion Locating Pin

Flow Rate Graph(Pneumatic Clamp)

Hexagon 14

Air Flow
Control Valve
BZ W

External Dimensions

KOSMEKWCA

P2 PortClamp Side
(Outgoing Side)40

P1 PortAir Pressure Supply Side
(Incoming Side)

Fully opened

80
60
Fully closed

20
0

0

0.1

0.2
Pressure Loss

0.3

0.4

0.5

[MPa]

Notes :
1. Since thearea is sealing part, be careful not to damage it.

2. No cutting chips or burr shoud be at the tolerance part of machining hole.
3. As shown in the drawing, P1 port is used as the air supply side and P2 port as the clamp side.

310

Company Profile

Sales Offices
Sales Offices across the WorldJAPANHEAD OFFICE

Overseas Sales
United States of America

TEL. +81-78-991-5162

FAX. +81-78-991-8787

KOSMEK LTD. 1-5, 2-chome, Murotani, Nishi-ku, Kobe-city, Hyogo, Japan 651-2241〒651-2241

兵庫県神戸市西区室谷2丁目1番5号

FAX. +1-630-620-9015

SUBSIDIARY

TEL. +1-630-620-7650

KOSMEK (USA) LTD.

650 Springer Drive, Lombard, IL 60148 USA

MEXICOREPRESENTATIVE OFFICE

TEL. +52-442-161-2347

KOSMEK USA Mexico Office

Av. Santa Fe #103 int 59 Col. Santa Fe Juriquilla C.P. 76230 Queretaro, Qro Mexico

EUROPESUBSIDIARY

TEL. +43-463-287587

KOSMEK EUROPE GmbH

Schleppeplatz 2 9020 Klagenfurt am Wörthersee Austria

CHINA

TEL. +86-21-54253000

KOSMEK (CHINA) LTD.
考世美(上海)貿易有限公司

INDIA

FAX. +43-463-287587-20
FAX. +86-21-54253709

Room601, RIVERSIDE PYRAMID No.55, Lane21, Pusan Rd, Pudong Shanghai 200125, China
中国上海市浦东新区浦三路21弄55号银亿滨江中心601室 200125

BRANCH OFFICE

TEL. +91-9880561695

KOSMEK LTD - INDIA

F 203, Level-2, First Floor, Prestige Center Point, Cunningham Road, Bangalore -560052 India

THAILANDREPRESENTATIVE OFFICE

TEL. +66-2-300-5132

KOSMEK Thailand Representation 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. +66-2-300-5133
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

INDONESIA(Indonesia Exclusive Distributor)

TEL. +62-21-29628607

PT. Yamata Machinery

Delta Commercial Park I, Jl. Kenari Raya B-08, Desa Jayamukti, Kec. Cikarang Pusat Kab. Bekasi 17530 Indonesia

FAX. +63-2-310-7286
FAX. +62-21-29628608

Sales Offices in Japan
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Overseas Sales
Tokyo Sales Office

Nagoya Sales Office

Fukuoka Sales Office1377

TEL. 078-991-5162〒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

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