P ne u m ati c
L a rg e E xpansi o n
L oc a t ing P i n
M ul ti - p urp o se Mo d e lMode lV WH

Pneumatic Double-Acting Model

VWH1000 has been newly added

VWH1000
Locating Repeatability：30μm
VWH2000/3000 Locating Repeatability：10μm
Zero Clearance between Reference Hole and Large Expansion Locating Pin

What is Expansion Locating Pin ?
Air Control High-Accuracy Locating Pin that locates a workpieceby expanding its pin diameter.
The general locating pin has some clearance

Expansion locating pin has zero clearance!!

between pin and workpiece hole.

High Accuracy
Suitable for Automation
Setup Time Reduction
Cost Reduction

Workpiece

Workpiece
Clearance

General Locating Pin

Expansion Locating Pin

Two types of locating pins (Cylindrical and Diamond shaped pins).

The Worldʼs First
Locating Mechanism

Expansion Locating Pin consisting of Datum-D and Cut-C cylinder.

When expanded : Clearance between the pin andreference hole becomes zero to173

Reference Locating

One Direction Locating

Round Pin↓
Datum Cylinder

Diamond-Shaped Pin↓
Cut Cylinder

locate with high accuracy.
When released : Easy to load/unload workpieces
with enough clearance.

VWH
Features

Application
ExamplesSystemReferences

External
Dimensions

Model No. Indication
Specifications

Cautions

Locating

Large Expansion

＋

Clamp

1.1mm

※

Expansion Stroke：

Locating

Hand・Clamp※When selecting VWH1000, expansion stroke is 0.7mm.
SupportValve・Coupler

Cautions・Others

Pneumatic Expansion
Locating Pin (Smaller)
VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)

Suitable for Automation・Robot Application

VWH
Pneumatic Expansion
Locating Pin
V WM

High Accuracy Model VWM has small clearance, but has

Large Expansion Model VWH has large clearance whenhigh accuracy of 3μm locating repeatability.

released, suitable for automation such as transfer robot※

application. (Locating Repeatability : 10μm )Clearance : Large

Clearance : Small

V WKManual Expansion
Locating Pin
VX
Screw
LocatorVXE
VXF
Compliance
ModuleW RC

Released

ExpandedReleased

Expanded(Locating Repeatability：10μm ※ )(Locating Repeatability：3μm)※When selecting VWH1000, locating repeatability is 30μｍ .

Easy to Measure the Mounting Distance AccuracyAble to measure the distance accuracy with the same core part on the top.
Probe

※

Measure the Distance Accuracy◎ φ0.02 Z

Z※When selecting VWH1000, measurement is not available.

Durability

Gripper

Air blow from the inside of the cylinder comes out
from the gripper gap and prevents contaminants.

Air Blow174

Large Expansion Locating Pin

Multi-Purpose Model Locating Repeatability：VWH1：30μm, VWH2/3：10μm

Application Examples

Suitable for Robot Application＜Knocking in from the Loader＞＜Loading and Unloading with Robot＞
175

m o d e l V WH

VWH
Features

SystemReferences

Application
ExamplesModel No. Indication
Specifications

External
Dimensions

Cautions

Locating

Line Up＋

Clamp
Locating

Hand・Clamp

Pneumatic

Support

MAX 0.7MPa

V W M → P.18 9

Model

Model/
Locating
Repeatability
Control
MethodOp. Pressure

M ode l

VWH

→ P. 173

M ode l

VWK → P. 209

Valve・Coupler

Cautions・OthersHigh Accuracy Model

Multi-Purpose Model

Casting Material Model

3μm

VWH1000：30μm
VWH2000/3000 ：10μm

Double Action(Air＋Spring Lock / Air Release)

Double Action(Air Lock / Air Release)

Double Action(Air Lock / Air Release)0.35 ~ 0.7 MPa

0.35 ~ 0.7 MPa

0.35 ~ 0.7 MPa

Taper Sleeve

10μm

Pneumatic Expansion
Locating Pin (Smaller)

Steel Ball

Large Clearance

Large
Expansion Stroke

VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)
VWH
Pneumatic Expansion
Locating Pin
V WM
V WK

ActionDescription

Manual Expansion
Locating Pin

Released State

Locked State

The taper sleeve expands.
Application
ExamplesReleased State

Locked State

Large Gripper Expansion

Finishing Line / Dividing Operation Line

Released State

Locked State

The steel balls
come out from the pin.
Locating Casting Core Holes /First Process

VX
Screw
LocatorVXE
VXF
Compliance
ModuleW RC

176

Large Expansion Locating Pin

Multi-Purpose Model Locating Repeatability：VWH1：30μm, VWH2/3：10μm

m o d e l V WH

System References● High Accuracy + One-Touch Locating Pin

Reduces Setup Time!
● When dividing operations into different fixtures, High Accuracy Locating Pin

Prevents Deterioration of Workpiece Accuracy!
● Using with Hole Clamps enables 5-face machining,

Integrated Operation and More Compact Fixture!
2

3
model

VWH-D

model

Expansion Locating Pin (Equiv. to Round Pin)

4

VWH-C

Expansion Locating Pin (Equiv. to Diamond Pin)

5

Workholding Clamp(Hole Clamp)

1

Hole for Locating (2 required)

Rough Guide

Workpiece (Pallet)

Base Plate
177

VWH
Features

Application
ExamplesModel No. Indication
Specifications

SystemReferences

External
Dimensions

Cautions

Locating

Essential Points

＋

Clamp

Workpiece Hole Diameter
φ5〜φ8 ±0.3

1 Workpiece Hole for Locating

Locating

Workpiece Hole Diameter
0.7
φ9〜φ15 +- 0.3

Hand・Clamp

・ Workpiece hole diameter is φ5 ~φ15 (in 1mm increments).
・ Workpiece hole tolerance is±0.3

Support+ 0.7

forφ5〜φ8, and - 0.3 forφ9〜φ15.

Valve・Coupler

Cautions・Others

Pneumatic Expansion
Locating Pin (Smaller)

2 Workpiece Weight

VRA /VRC

Expanding
Force・Workpiece weight that expansion locating pin is able to locate withMax. workpiece weightis calculated fromexpanding force.

is calculated from expanding force.

Pneumatic Expansion
Locating Pin (Large
Expansion Model)
VWH

・ Expanding force is the force with which the expansion locating pin

Pneumatic Expansion
Locating Pinpushes out (expands) against the workpiece.

V WM
V WK

・ Refer to the specification page for each model's calculation method

Manual Expansion
Locating Pinof expanding force and allowable workpiece weight for locating.

VX
Screw
Locator
VXE

Expanding Direction

3 Mounting Phase of VWH-C (Cut：For One Direction Locating)

Y

icu

lar

Compliance
Module

e

nd

VXF

X

W RC

P er p・ Reference position (origin) is determined by V W H-D (Datum: for reference locating).
・VWH-C (Cut: for one direction locating) locates in one direction (Y-axis),so phasing is necessary.
When mounting, ensure the expanding direction of V W H-C (cut) is

VWH-D (Datum)
For Reference Locating(X-axis / Y-axis)(Equivalent to Round Pin)perpendicular to V W H-D (datum).

VWH-C (Cut)For One Direction(Y-axis)(Equivalent to Diamond Pin)

Reference Surfaceof Z-axis
Clearance

4 Setting an Additional Seat・ This model has no seating surface (reference surface towards Z-axis).
Please prepare a seat separately.

Workpiece
Z

Seat

Base Plate
Expansion Locating Pin

Work Clamp

5 Setting Additional Workholding Clamps
・ Expansion locating pin has no clamping function.

Expansion locating pin is used only for locating.
Work Clamp

Workpiece

・ Additional clamps should be added to clamp workpieces.

178

Large Expansion Locating Pinm od e l V WH

Multi-Purpose Model Locating Repeatability：VWH1：30μm, VWH2/3：10μm

Model No. Indication

VWH 2 00 0 - 090 - D - H 2 0
1

3

2

4

5

1 Body Size

2 Design No.

1 ： Select from Workpiece Hole Diameter φ5 / φ6 / φ7 / φ8

0 ：Revision Number

2 ： Select from Workpiece Hole Diameter φ9 / φ10 / φ11 / φ12 / φ13
3 ： Select from Workpiece Hole Diameter φ14 / φ15

3 Workpiece Hole Diameter
Workpiece Hole Diam. CodeWorkpiece Hole Diam. φWA

050
5

±0.3

Please contact us for unlisted workpiece hole diameters.

060
6

070

±0.3

7

080

±0.3

8

±0.3

090

+ 0.7
9 - 0.3

100+ 0.7
10 - 0.3

110

120

+ 0.7
11 - 0.3+ 0.7
12 - 0.3

130

140

+ 0.7
13 - 0.3+ 0.7
14 - 0.3

0.7
15 +- 0.3

Workpiece Hole Diam.
φWA

Selection Range

VWH1000

Selection Range

VWH2000

Selection Range

VWH3000

4 Functions

5 Seating Height※

Seating Height

D ：Datum (for Reference Locating)
C ：Cut (for One Direction Locating)
VWH1

150

D

C

H15 ：15mm
H20 ：20mm※

H25 ：25mm※Only H20 can be selected for VWH1000.

Note: Please prepare a seat separately.

VWH2/3

Cut

Datum

Specifications（mm）
VWH1000

Model No.
3 Workpiece Hole Diam. CodeWorkpiece Hole Diam. (Straight Hole) mm(C：Cut)

mm

060

070

φ6 ±0.3

φ7 ±0.3

080

090

100

120

mm

0.03

0.01

±0.10

±0.05

±0.10

at Max. Hole Diam.

130

140

150

0.7
+ 0.7
+ 0.7
+ 0.7
+ 0.7
0.7
φ8 ±0.3 φ9 +- 0.3
φ10 -+ 0.3
φ11 +- 0.7
0.3 φ12 - 0.3 φ13 - 0.3 φ14 - 0.3 φ15 - 0.3±0.55

at 0.35 MPa

70

70

70

70

70

70

70

70

70

110

110

at 0.5 MPa

110

110

110

110

110

110

110

110

110

170

170

at 0.7 MPa

160

160

160

160

160

160

160

160

160

250

250

Allowable Thrust Load ※3 N

30

50

50

150

800

800

900

1000

1000

1200

1300

Expanding
Force (F) ※2

N

Allowable Workpiece Weight for Locating kg
Cylinder Capacity

Release(Empty Action) cm 3 Lock
Operating Pressure Range

MPa

Withstanding Pressure

MPa

Refer to “Relative Equation of Expanding Force and Allowable Workpiece Weight for Locating” on P.179R.

3

5

5

15

0.35

0.35

0.35

0.35

0.46

0.46

0.46

0.46

0.46

0.76

0.76

0.27

0.27

0.27

0.27

0.35

0.35

0.35

0.35

0.35

0.53

0.53

Recommended Air Blow Pressure MPa
Operating Temperature Range℃

Usable Fluid

0.35 〜 0.7
1
0.2 〜 0.3
0 〜 70Dry Air

Notes：※1. It shows the locating repeatability under specific condition (when no load is applied).
※2. Expanding force shows the calculated value when coefficient friction is μ0.2.
※3. Exceeding allowable thrust load leads to accuracy failure and/or damages on the product.
1. This product locates and releases with air pressure. (Air Pressure Double-Acting Model)
2. This cylinder is used only for locating and does not have a clamping function.

179L

110

VWH3000

at Min. Hole Diam.

Locating Repeatability ※1
Allowable Oﬀset

050
φ5 ±0.3

VWH2000

VWH
Features

SystemReferences

Application
ExamplesModel No. Indication
Specifications

External
Dimensions

Cautions

Locating

Relative Equation of Expanding Force and Allowable Workpiece Weight for Locating

＋

Clamp
Locating

F

W

Horizontal Attitude

F

Hand・Clamp

Vertical AttitudeμSeat

SupportW
Expanding Force per Expansion Locating Pin (F) [N]×Efficiency 0.25
Workpiece
Weight (W)［kg］≦ Friction Coefficient of Workpiece Seat Face (μ) × 9.8

Valve・Coupler

Expanding Force per Expansion Locating Pin (F) [N]Workpiece
× Efficiency 0.25
Weight (W)［kg］≦
9.8

Cautions・Others

Pneumatic Expansion
Locating Pin (Smaller)
VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)
VWH
Pneumatic Expansion
Locating Pin

Thrust Load/Displacement Curve

V WM

This graph shows the relationship between thrust load and【How to Read the Thrust Load/Displacement Curve】

displacement. Thrust load is the static load applied perpendicularex.) In case of VWH2000-090

to the center axis of the VWH (Pneumatic Expansion Locating Pin).

Requirement : When an 800N

V WK

Displacement

thrust load is applied to an
Note：

Manual Expansion
Locating Pin
Workpiece

expanded VWH2000-090,

This graph shows the thrust load (static load) applied to a single datum

the displacement will be about

cylinder (VWH-D) that is not used with any other cylinders, etc.

0.050mm.

Thrust Load

VX
Screw
Locator
VXE

Seat

VXF
Compliance
ModuleW RC

VWH1000

VWH2000

0.060

0.060
VWH1000-060
VWH1000-070
VWH1000-050

0.040

VWH1000-080

0.030
0.020
0.010
0

VWH2000-090

0.050

Displacement (mm)Displacement (mm)0.050

VWH2000-120
VWH2000-130

0.040
VWH2000-100

0.030

VWH2000-110

0.020
0.010

0

50

100

160

Thrust Load (N)

0

0

500

800

1000

1500

Thrust Load (N)VWH3000
0.060
VWH3000-140

Displacement (mm)0.050

VWH3000-150

0.040
0.030
0.020
0.010
0

0

500

1000

1500

Thrust Load (N)179R

Large Expansion Locating Pin

m o d e l V WH

Multi-Purpose Model Locating Repeatability：30μm

External Dimensions

Expanding Area Detail※ The drawing shows the released state of VWH1000.
When Released

When Locked (At Full Stroke)

Datum Diameter

Datum Diameter

φ
33

19
2-Mounting Bolt (Included)
M5×0.8×12

VWH-D

(6)

12

(7.5)

12

Full Stroke
2.1

Identification Mark ※1

2-Thread for Jack Bolt
M6×1

VWH-C

Workpiece Hole Dimensions
Blind HoleWorkpiece Hole Diameter
φWA ±0.3

6 or more(Cut：One Direction Locating)φL

C0.5 or less5.5

Datum Diameter

20

φ15
※2

５
5

19

Workpiece Hole Diameter
φWA ±0.3

φM

3.3

6

C0.5 or less

60°

５

44.5

18

N

7.5

GripperThrough Hole

3 or more

CC
2-Dummy Gripper

２-Dummy Gripper Part

(Datum：Reference Locating)

VＷH Mounting Surface- 0.006

φ15g7 - 0.024
1-O-ring (Included)AS568-013(70)Notes:※1. Identification mark is only marked on -C：Cut (for one direction

1-O-ring (Included)AS568-013(70)locating). ◀▶ indicates the locating direction.
※2. Do not use spring washer or toothed lock washer.
1. When mounting the product, use two mounting bolts(Strength Grade 12.9) and tighten them evenly.
Use two jack bolts to remove the product, keeping it parallelto the mounting surface.
2. This product has no seat. Please prepare a seat separately.

180L

VWH
Features

SystemReferences

Application
ExamplesModel No. Indication
Specifications

External
Dimensions

Cautions

Locating

Machining Dimensions for Mounting

＋

Clamp
Locating

1212

2-M5×0.8 Thread Depth 9 or more
Hand・Clamp

★

★

6.5

Support★

Air Blow Port※3
φ3

Valve・Coupler★

Cautions・Others

10.5+0.018Must be 1.3

30°

Rz 6.3

Notes：※3. Prepare an air blow port choosing one port from four ★ parts.
※4. There might be foam near the flange bottom depending onroughness of mounting surface, but this is not a malfunction.
※5. Prepare the air lock port within.
※6. Prepare the air release port on the bottom within the range of φ14.
1. Make sure to check the cautions for cylinder mounting distanceaccuracy, workpiece hole distance accuracy and mounting phase
before installation. (Refer to P.183/184.)⊥ 0.01 Z

Mounting※4
Surface14.5 ±0.1

7※5

30°

Rz 6.321.7 or more

Rz 6.3

7.5

Z

φ15 H7 0

Pneumatic Expansion
Locating Pin (Smaller)
VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)
VWH
Pneumatic Expansion
Locating Pin
V WM
V WK

Rz 100Air Lock Port※5

Manual Expansion
Locating Pin

φ14±0.05 ※6

Air Release Port

※6

VX
Screw
Locator
VXE

External Dimensions and Machining Dimensions for Mounting

VXF

（mm）

Compliance
ModuleModel No.
3

VWH1000-□-□-H20
Workpiece Hole Diam. CodeWorkpiece Hole Diam. (Standard Diam.) φWA
Datum Diam.

050

φ5 ±0.3060

φ6 ±0.3

φ7 ±0.3

W RC080

φ8 ±0.3

When Released

φ4.6 or less

φ5.6 or less

φ6.6 or less

φ7.6 or less

When Fully Stroked

φ5.3 or more

φ6.3 or more

φ7.3 or more

φ8.3 or more

L

4.6

5.4

5.4

6.4

M

3.7

4.5

4.5

5.5

N

1.5

1.5

1

1

4.3

5.3

6.3

7.3

When Fully Stroked

5.1

6.1

7.1

8.1

Weight

60

60

60

60

Cylinder Stroke

CC

070

2.1

When Releasedg

180R

Large Expansion Locating Pin

m o d e l V WH

Multi-Purpose Model Locating Repeatability：10μm

External Dimensions

Expanding Area Detail※ The drawing shows the released state of VWH2000 and VWH3000.
When Released

2-Thread for Jack Bolt

S

Q

Datum Diameter

(φL)

M6×1

（E）

M5×0.8×12（E）

φR

2-Mounting Bolt (Included)

When Locked (At Full Stroke)Q

VWH-D ※1
(Datum：Reference Locating)Workpiece Hole Dimensions
Blind HoleWorkpiece Hole DiameterφWA +- 0.7
0.3

8 or more(Cut：One Direction Locating)

Datum Diameter
φL
φM
※1

C0.5 or less

60°

3

E

7.5

Gripper

C0.5 or less※3

◎ φ0.02 Y

Workpiece Hole DiameterφWA +- 0.7
0.3
3 or more

VWH-C ※1

Through Hole

G
H
※2

19

5

4

A

F

B

φN

φDg7

VＷH Mounting Surface

Y
1-O-ring (Included)W
1-O-ring (Included)
X

Notes :
※1. The mounting direction of VWH-C (Cut) should be confirmed by
the direction of the gripper.
※2. Do not use spring washer or toothed lock washer.
※3. The tip of the product can be used to check the mounting distanceaccuracy after installed. However, it is different from the center
accuracy of the gripper part (locating part), so make sure to
determine the origin with an actual workpiece before machining.
1. When mounting the product, use two mounting bolts(Strength Grade 12.9) and tighten them evenly.
Use two jack bolts to remove the product, keeping it parallelto the mounting surface.
2. This product has no seat. Please prepare a seat separately.

181

VWH
Features

SystemReferences

Application
ExamplesModel No. Indication
Specifications

External
Dimensions

Cautions

Locating

Machining Dimensions for Mounting

＋

Clamp
Locating

Q

Q

2-M5×0.8 Thread Depth 9 or more
Hand・Clamp

★

★

MA

Support★

Air Blow Port※4
φ3

Valve・Coupler★

Cautions・OthersMCMust be 1.3

30°

Rz 6.3

Notes：※4. Prepare an air blow port choosing one port from four ★ parts.
※5. There might be foam near the flange bottom depending onroughness of mounting surface, but this is not a malfunction.
※6. Prepare the air lock port within.
※7. Prepare the air release port on the bottom within the range of φMD.
※8. When the depth of mounting hole is not properly machined,
it may lead to insufficient expansion or damages on the product.
1. Make sure to check the cautions for cylinder mounting distanceaccuracy, workpiece hole distance accuracy and mounting phase
before installation. (Refer to P.183/184.)⊥ 0.01 Z

Mounting※5
Surface14.5 ±0.1

227※6+ 0.2 ※80Rz 6.3

7.5

Z

φDH7

Air Lock Port ※6

Rz 6.330°

Rz 100Pneumatic Expansion
Locating Pin (Smaller)
VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)
VWH
Pneumatic Expansion
Locating Pin
V WM
V WK
Manual Expansion
Locating Pin

Air Release Port ※7

VX

φMD±0.05 ※7

Screw
Locator
VXE

External Dimensions and Machining Dimensions for Mounting
Model No.
3

Workpiece Hole Diam. CodeSeating Height

090

100

110

120

130

140

150

H15 H20 H25 H15 H20 H25 H15 H20 H25 H15 H20 H25 H15 H20 H25 H15 H20 H25 H15 H20 H25+ 0.7

Workpiece Hole Diam. (Standard Diam.) φWA

+ 0.7

+ 0.7

+ 0.7

+ 0.7

+ 0.7

φ10 - 0.3

φ11 - 0.3

φ12 - 0.3

φ13 - 0.3

φ14 - 0.3

φ15 - 0.3

φ8.6 or less

φ9.6 or less

φ10.6 or less

φ11.6 or less

φ12.6 or less

φ13.6 or less

φ14.6 or less

When Fully Stroked

φ9.7 or more φ10.7 or more φ11.7 or more φ12.7 or more φ13.7 or more φ14.7 or more φ15.7 or more
3

3

A

41.5 46.5 51.5 41.5 46.5 51.5 41.5 46.5 51.5 41.5 46.5 51.5 41.5 46.5 51.5 41.5 46.5 51.5 41.5 46.5 51.5

B

14.5 19.5 24.5 14.5 19.5 24.5 14.5 19.5 24.5 14.5 19.5 24.5 14.5 19.5 24.5 14.5 19.5 24.5 14.5 19.5 24.5
- 0.006- 0.007

D g7（Main Body Side）

15 - 0.024

19 - 0.028

D H7（Machining Hole）

15

19

E

+0.0180

8+0.021
0

8

F

7.5

G

8° 20° 35° 8° 20° 35° 8° 20° 35° 8° 20° 35° 8° 20° 35° 8° 25° 40° 8° 25° 40°

H

15

9
20

9.5
25

7.5
15

8.6

L

9
20

9.5

7.5

25

15

9.6

9
20

9.5
25

7.5
15

10.6

9
20

9.5
25

7.5
15

11.6

9
20
12.6

9.5
25

7.5
15

9
20

9.5

7.5

25

15

13.6

9
20

6.9

7.9

8.9

9.9

10.9

11.9

12.9

N

10.5

11.5

12.5

13.5

14.5

15.5

16.5

Q

12

R

33

37

S

19

23

W

AS568-013（90）AS568-016（90）XAS568-013（90）AS568-015（90）

MA

6.5

7.5

MC

10.5

12.5

g

70

80

100

70

80

100

70

90

25

14

14

MD

9.5

14.6

M

Weight

W RC

+ 0.7

φ9 - 0.3

When Released

Cylinder Stroke

VXF
Compliance
ModuleVWH3000-□-□-□

VWH2000-□-□-□

5

Datum Diam.

（mm）

18
100

80

90

100

80

90

100 110 120 140 110 120 140

182

Large Expansion Locating Pin

m o d e l V WH

Multi-Purpose Model Cautions

Cautions● Notes for Design
1) Check Speciﬁcations

6) Reference Surface towards Z-axis● Please use each product according to the speciﬁcations.

● This model has no seating. Please prepare a seat separately.

Model VWH locates and releases with air pressure.
7) Adjusting Height of Expansion Locating Pin● Seating height can be selected from 15mm / 20mm / 25mm.

2) Notes for Circuit Design● Please read “Circuit Reference” to assist with proper air circuit(Only 20mm can be selected for VWH1000)● For slight adjustment of seating height and expanding part3) Air Supply● Continuously supply air pressure to the air blow port.
If air supply is shut oﬀ during operation, contaminants enter
into the cylinder leading to malfunctions.
4) Prepare a Clamp Cylinder● The expansion locating pin is a positioning cylinder and hasheight, install a spacer (3mm or less) under the ﬂange.

Spacer(Prepared by Customer)
max. 3

Improper circuit design may lead to malfunctions and damages.

Seating Height

design.

no clamping function. Additional clamp(s) must be prepared.
5) Expansion Locating Pin Mounting Direction (Phase)● The Cut (VWH-C) locates a workpiece in the direction of rotation● Install a spacer block under the ﬂange if the height ofexpansion locating pin is not enough.

based on the datum ( VWH-D). Therefore, it is required to determine
the phase of C：Cut when mounting.
When mounting the product, make sure that expanding direction

Spacer Block

Perp
en

of -C ( Cut) is perpendicular to -D ( Datum).

Y

lar
cu
di

(Prepared by Customer)
Expanding
DirectionX- D (Datum)- C (Cut)

8) When the workpiece is in vertical position.
● When setting a workpiece, make sure it is in proper proximity
and square to the expansion locating pins.
If it is locked out of position, the products may be damaged.
● If a workpiece may fall down when released, it is recommended
to set up the latching mechanism to prevent it from falling down.
● When a workpiece is used in vertical position (hanging on the

Expanding Direction
Expanding direction of standard model isthe same as the direction of mounting bolt.
Contact us if needing to change theexpanding direction of C：Cut.

183wall), the internal moving parts tend to wear out. Check thelocating accuracy regularly, and if exceeding the allowable
range, replace the product.
Example of Latching Mechanism

VWH
Features

Application
ExamplesSystemReferences

Model No. Indication
Specifications

External
Dimensions

Cautions

Locating＋

Clamp
Locating

9) Inclination in the Z-axis direction.

11) Distance Accuracy of VWH● If a workpiece is tilted when loading/unloading, expanded part

● Distance accuracy between VWH mounting holes (D：Datumof expansion locating pin and workpiece hole will get stuck andand C：Cut) and between workpiece holes has to be determinedthe cylinder and workpiece will be damaged. Workpiece should beaccording to the allowable oﬀset (VWH-C : Cut).

● The product will be damaged when a workpiece is tilted duringloading/unloading (especially when unloaded). Prepare guidepins (rough guides) to keep the workpiece level during loading/unloading.

SupportValve・Coupler

loaded and unloaded with less than 4/100 ~ 5/100 (approx. 2 ~ 3°)of tilt between workpiece and expansion locating pin plane.

Hand・Clamp

12) Depth of Mounting Hole
● When the depth of mounting hole is not properly machined,

Cautions・Others

it may lead to insufficient expansion or damages on the product.
Pneumatic Expansion
Locating Pin (Smaller)
VRA /VRC
Pneumatic Expansion
Locating Pin (Large
Expansion Model)

Workpiece

VWH
Pneumatic Expansion
Locating Pin

Expansion Locating Pin

V WM
V WK
Manual Expansion
Locating Pin
VX
Screw
LocatorVXE
VXF

Guide Pin
(Rough Guide)

Compliance
ModuleW RC

10) Thickness around the Workpiece Hole● Thin wall around the workpiece hole could be deformed byexpanding force, and locating accuracy would not ﬁll the

Deformation

speciﬁcation. Please conduct trial testing before use.

184

Large Expansion Locating Pin

m o d e l V WH

Multi-Purpose Model Cautions

Cautions● Installation Notes
1) Check the ﬂuid to use● Please supply ﬁltered clean dry air.
● Oil supply with a lubricator etc. is unnecessary.
2) Preparation for Piping● The pipeline, piping connector and ﬁxture circuits should becleaned and ﬂushed thoroughly.
The dust and cutting chips in the circuit may lead to ﬂuid leakage
and malfunction.
3) Applying Sealing Tape
● Wrap with tape 1 to 2 times following the screwing direction.
Wrapping in the wrong direction will cause leaks and malfunction.
● Pieces of the sealing tape can lead to air leaks and malfunction.
● When piping, be careful that contaminant such as sealing tapedoes not enter in products.
4) Installation / Removal of the Expansion Locating Pin● Use all the attached hexagonal socket bolts (Strength Grade12.9) and tighten them with torque shown in the table below.
Tighten them evenly to prevent tilting of the product.
Model No.

Mounting Bolt
Thread Size

Tightening Torque (N･m)

VWH1000

M5×0.8

6.3

VWH2000

M5×0.86.3

VWH3000

M5×0.8

6.3● Do not use spring washer or toothed lock washer.
● There might be foam near the ﬂange bottom depending onroughness of mounting surface, but this is not a malfunction.
● When removing the product, use two jack bolts (two mounting bolt
holes) in order not to damage the installation tap. The followingshows the case in which the parallel pin (hollow set) is set in thetapped hole so that the installation tap will not be damaged.

Jack Bolt
Expansion
Locating Pin

Installation Tap
Parallel Pin(Hollow Set) etc.

※ Please refer to P.905 for common cautions.

185

・Notes on Handling・Maintenance/Inspection

・Warranty

VWH
Features

Application
ExamplesSystemReferences

Model No. Indication
Specifications

External
Dimensions

Cautions

Locating＋

Clamp
Locating● Notes on Pneumatic Cylinder Speed Control Unit！

Hand・Clamp

Please pay attention to the cautions below. Design the circuit for controlling the action speed of cylinder.
Improper circuit design may lead to malfunctions and damages. Please review the circuit design in advance.

Circuit Reference

SupportValve・Coupler

Expansion Locating Pin andother actuators on
diﬀerent circuits.

Cautions・Others

Pneumatic Expansion
Locating Pin (Smaller)

Recommended Air Pressure
0.2 ~ 0.3MPa

VRA /VRC

Air Blow
VWH-C
(Cut)

Pneumatic Expansion
Locating Pin (Large
Expansion Model)

VWH-D(Datum)VWH

Lock Air

Pneumatic Expansion
Locating Pin

Release Air

V WM
V WK

Single-Acting Actuator

Manual Expansion
Locating Pin

Double-Acting Actuator

VX

Lock Air

Air

Release Air

FilterRecommended 5μm※1

Double Action
model VWH

Screw
LocatorVXE
VXF
Compliance
Module

VWH
Locates with Air Pressure
Releases with Air Pressure

W RC

Expansion Locating Pin andother actuators on
the same circuit.
Recommended Air Pressure
0.2 ~ 0.3MPa
Air Blow
VWH-C
(Cut)

VWH-D
(Datum)Lock Air
Release Air

Single-Acting Actuator

Double-Acting Actuator
Lock Air※1

Release Air※1

Air
FilterRecommended 5μm

VWH
Locates with Air Pressure
Releases with Air Pressure
Notes：※1. The procedure for lock operation should be "VWH (Expansion Locating Pin)" → "other actuators".
Otherwise there might be accuracy failure and/or damages on the product.
1. This circuit reference is one example. It should be prepared depending on the fixture structure.

186

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 removing the product, make sure that the safety devices

and maintained by qualiﬁed personnel.

are in place. Shut oﬀ the pressure and power source and makesure no pressure exists in the air and hydraulic circuits.

2) Do not operate or remove the product unless the safety protocols
are ensured.

● Make sure there is no trouble/issue in the bolts and respective
parts before restarting.

① The machine and equipment can only be inspected or preparedwhen it is conﬁrmed that the safety devices are in place.

2) Regularly clean the area around the piston rod and plunger.

② Before the product is removed, make sure that the above-mentioned● If it is used when the surface is contaminated with dirt, it may

safety devices are in place. Shut oﬀ the pressure and power source,

lead to packing seal damage, malfunctioning, ﬂuid leakage.

and make sure no pressure exists in the air and hydraulic circuits.
③ After stopping the product, do not remove until the temperaturedrops.
④ Make sure there is no trouble/issue 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.

3) Regularly clean the reference surfaces (taper reference surface
and seating surface) of locating products (SWT/SWQ/SWP/VRA/
VRC/VX/VXE/VXF/WVS/WVG/VWH/VWM/VWK).
● Locating products (except VRA/VRC/VX/VXE/VXF and SWR without
air blow port) can remove contaminants with the cleaning function.
When installing a workpiece or a pallet, make sure there are no4) Do not disassemble or modify.
● If the equipment is taken apart or modiﬁed, the warranty will be
voided even within the warranty period.

contaminants such as thick sludge.
● Continuous use with dirt on components will lead to locating failure,ﬂuid leakage and malfunction.

4) Regularly tighten pipe, mounting bolt, nut, snap ring, cylinderand others to ensure proper use.
5) Make sure the hydraulic ﬂuid has not deteriorated.
6) 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.
7) The products should be stored in the cool and dark place
without direct sunshine or moisture.
8) Please contact us for overhaul and repair.

905

Notes on Handling

Maintenance/Inspection

Warranty

Locating＋

Clamp● Warranty

Locating

1) Warranty Period

Hand・Clamp● 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
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 Failure caused by the use of the non-conﬁrming state at the userʼs
discretion.
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
excluded from the warranty.

SupportValve・Coupler
Electric Drive・
Conveyor
Cautions・Others

Cautions
Installation Notes
Maintenance/
Inspection
Warranty

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Sales Offices906

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
Head OfficeOsaka Sales Office
Overseas Sales
Tokyo Sales Office

Nagoya Sales Office

Fukuoka Sales Office927

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

Global Network
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Distributors

EuropeCanadaU.S.A.
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Asia Detailed Map

Korea
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TaiwanIndia
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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

928