CEK- □□ - □Work positioning cylinder

7MPa

Doubleacting

Work positioning cylinder
Double acting 7 MPa

CEKWork positioning cylindermodelCEK

X & Y axes positioning model CEK-A

θ axis positioning model CEK-B

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177CEK- □□ - □Work positioning cylinder

X & Y axes positioning
modelCEK-A□

7MPa

Doubleacting

θ axis positioning

PAT.

modelCEK-B□

PAT.

Enables high accuracy positioning of the workpieceand maintains machining accuracy under between operations.

Work positioning cylinder

Repeatability：within 5μm

θ
X
model

CEKmodel(X & Y axespositioning)

Y

Base plate

XY axes and θ axis constraint allow high accuracy positioning.

Specifications

page → 182

Dimensions

page → 184

Mounting details page → 186

178

CEK-B

(θ axispositioning)

CEK-ACEK- □□ - □Work positioning cylinder

7MPa

Doubleacting

Gripper expansion
Positioning hole (H8)

Workpiece
Taper

GripperWork positioning cylindermodel CEK

PistonBase plate

Unlocking hydraulic pressure

Locking hydraulic pressure

A piston lowers by locking hydraulic pressure then a gripper expands horizontally

Work positioning cylinder

along the taper face of the piston.

Workpiece positioning
Positioning hole (H8)

Workpiece

CEKZERO
CLEARANCE

Gripper

TaperWork positioning cylindermodel CEK

Expanded stroke end
PistonBase plate

Unlocking hydraulic pressure

Locking hydraulic pressure

The gripper deforms elastically in radial direction when it comes to the stroke end
and the clearance between hole and the gripper is inﬁlled by the deformation,
which ensures accurate positioning.

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179CEK- □□ - □Work positioning cylinder

7MPa

Doubleacting

Enables workpiece change smooth

Clearance：0.01‒0.03mm

Enough clearance to make the change quick and easy

Diﬃcult to change due to very small clearance

CEKWork positioning cylinder

Clearance：0.2mm

Work positioning cylinder

Positioning pin

Model CEK has long expansion stroke to make

A positioning pin requires very small clearance

an enough clearance (0.2mm) to change theto achieve accurate positioning, which makes

workpiece easily and quickly.

it diﬃcult to engage or disengage the pin.

Do not have an impact on gripper and piston since it employs
many parts and has less strength than positioning pin.

180

CEK- □□ - □Work positioning cylinder

7MPaDoubleacting

Positioning hole pitch error can be tolerated
Allowable distance error：±0.1mm
Gripper tolerates the distance error

Pitchtdisancesliding in the direction of a red arrow.

model

CEK-B

(θ axispositioning)

CEK-A(X & Y axespositioning)Work positioning cylindermodel

Blow air㻌㻌CEKIncorporating strong air blow circuit

Unlockinghydraulic pressure

Air blows out from the gap between rod, gripper and scraper to protect
the positioning hole from the intrusion of chips and coolant.

To download CAD data / To get updated information, visit www.pascaleng.co.jp181CEK- □□ - □Work positioning cylinder

7MPa

DoubleactingSpecifications

TypeSize01

A ：X & Y axes
positioning

CEK02

ーB ：θ axis
positioning

ー03

08

09

10

11

13

14

15

16

17

18

19

20

12

CEK-A01- Positioning hole diameter CEK-A02- Positioning hole diameter CEK-A03- Positioning hole diameter
CEK-B01- Positioning hole diameter CEK-B02- Positioning hole diameter CEK-B03- Positioning hole diameter

Model

13‒1617‒20

Hydraulic pressure 2.5MPa

kN

1.21

1.78

2.52

Hydraulic pressure 5MPa

kN

2.43

3.56

5.03

Hydraulic pressure 7MPa

kN

3.40

4.99

7.05mm1.35

1.35

1.4Lock

cm 3

0.17

0.25

0.37

Unlock

cm 3

0.20

0.32

0.47

Work positioning cylinder

8‒12CEKmm

Positioning hole diameter

Cylindercapacity

Radialexpansionforce

Positioning hole diameter

Full stroke

Allowable distance error 1mm±0.1

Repeatability

μm

5Recommended air blow pressureMPa

0.3‒0.4

Mass
Recommended tightening torque ofmounting screws 2● Pressure range：2.5‒7 MPa

kg

0.10

0.14

0.21

N･m

3.6

3.6

7.2

● Proof pressure：10.5 MPa● Operating temperature：0‒70 ℃● Fluid used：General mineral based hydraulic oil (ISO-VG32 equivalent)
1：This is value when CEK-A and CEK-B are used in combination. The value is achievable only when CEK-A and CEK-B are usedtogether.
2：ISO R898 class 12.9182

CEK- □□ - □Work positioning cylinder

7MPa

DoubleactingHydraulic and pneumatic circuit diagram

2.5‒7MPa

Work positioning cylinder

Work positioning cylinderType A (CEK-A)

Type B (CEK-B)

Lockinghydraulic pressure

5μmUnlocking
hydraulic pressure

Air blow
0.3‒0.4MPa

Work positioning cylinder

For stable positioning accuracy, the circuit should be built to have Type A actuate first.

Flow control valve mounting example

Flow control valve
model VCF01

CEKWorkpiece

Coolant cap
Work positioning cylindermodel CEK-B

Mounting block

Lockinghydraulicpressure
Base plate
Unlockinghydraulicpressure

Refer to page →170 for details on flow control valve model VCF.

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Doubleacting

7MPaDimensions
CEK-A

CEK-B

0°

0°

1212Scraper (blue)

Scraper (red)P.C.D. M

P.C.D. M
12120°

øL H8(Positioning hole diameter)

øK(Gripper outer diameter at unlocking)

øL H8
øK

(Gripper outer diameter at unlocking)

2-O-ring FA

O-ring FB

øA

CE

3-øV

15±0.515°

GEøB n612.8

DC

15±0.515°
12.8

3-øV

3-øW
Clamp removal thread
3-X thread throughD3.8

3.83-øW
Clamp removal thread
3-X thread throughCEK(Positioning hole diameter)øNGWork positioning cylinder

øNO-ring FBθaxis positioning
direction mark0°

øB n62-O-ring FAøA

ø3.4 depth 3.5
C0.5 ( )Blow air supply port

30°

30°
Blow air supply port

°
60°
60
ø3.4 depth 3.5
C0.5 ( )Locking hydraulic port

Locking hydraulic port：Positioning pin is used to prevent positioning mistake (recommended positioning pin : Spring pin ø3×8).

184

CEK- □□ - □Work positioning cylinder

Doubleacting

7MPammPositioning hole diameter

CEK-A02- Positioning hole diameter

CEK-A03- Positioning hole diameter

CEK-B01- Positioning hole diameter

CEK-B02- Positioning hole diameter

CEK-B03- Positioning hole diameter

813

17

910

1112

14

15

16

18

40

19

øA

36

øB

17.5 +0.012

21 +0.015

26 +0.015

C

32

35

38

D

24

25

26

E

8

10

12G

6

6

5+0.023

7.8

øK
øL

8+0.02208.8
9+0.02209.8
10+0.022011

47+0.028

10.8+0.027
011.8
12+0.027012.8
13+0.027013.8
1414.8+0.027
020

15+0.027
0+0.02815.8
16+0.027016.8
17+0.027
017.8
1818.8+0.027
019+0.033
0M

273136

øN

182225.6

øV

4.3

4.3

5.5

øW

7.5

7.5

9X

M5×0.8

M5×0.8

M6×1

O-ring FA (fluorocarbon hardness Hs90)

P4

P4

P4

O-ring FB (fluorocarbon hardness Hs90)

S15

S18AS568-020

19.8
20+0.033
0Work positioning cylinder

Model

CEK-A01- Positioning hole diameter● The diagram indicates unlocked condition.
● Mounting screws, positioning pin are not included.

CEK● Use øA for positioning measurement after mounting.

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7MPa

Doubleacting

Mounting details

Max. ø3(locking hydraulic port)

0°

+0.09

ø3 0 depth 5 ( )(CEK-A positioning pin hole)

1260°

Max. ø3(blow air supply port)

30°

30°

ZZ

3-U thread+0.09

ø3 0 depth 5 ( )(CEK-B positioning pin hole)

120°

7

Min. P

Rz6.3

1Rz6.3Work positioning cylinder

6.3

30°

øS H6Rz

P.C.D. M.4

R0Min. ø2 (unlocking hydraulic port)

CEKøT +0.2
0Z-Z
Rz: ISO4287(1997)：Positioning pin is used to prevent positioning mistake (recommended positioning pin : Spring pin ø3×8).

mm

186

Model

CEK-A01- Positioning hole diameter
CEK-B01- Positioning hole diameter

CEK-A02- Positioning hole diameter
CEK-B02- Positioning hole diameter

CEK-A03- Positioning hole diameter
CEK-B03- Positioning hole diameterM

273136

P

8.5

10.5

12.5

øS

17.5

øT

17.3

20.8

25.8

UM4

M4M5+0.011
021+0.013
026+0.013
0