CGY- F22□□

Air expansion clamp Long neckａｉｒ

air Expansion clamp
Double acting 1 MPa

CGY

CGY
Long neckAir expansion clamp

model

model

114

CGY

Doubleacting

CGY- F22□□

Air expansion clamp Long neck

Doubleactingａｉｒ

Specifications
Grip inner diameter− ：Air blow model

CGY ー F22
E ： Non-constant
air blow model：Number of grippers

055

058

061

064

067 070A ： 2 Grippers

070

073

076

079

082

085

09

10

： 2 Grippers

11

12

13

： 3 Grippers： 2 Grippers

indicates made to order.

CGY-F22-

Size
Model

055 058 061 064 067 070A 070 073 076 079 082 085 09

11

2 Grippers

Number of grippers
Clamping force(air pressure 0.5MPa)
Radial expansion force(air pressure 0.5MPa)

kN
kN

2.52

Taper rod stroke

mm

4.0

Clamp stroke

mm
Clamp

Cylindercapacity

10

UnclampAllowable eccentricity

Recommended air blowpressure
Recommended sensor airpressure
Mass

0.81
2.81

2.52
4.8

1.2
7.2

8.7

3

8.1

9.7

mm

±0.3

±0.4

MPa

0.3

MPa

0.2
0.61

kg

Recommended tightening
torque of mounting screws 2

0.65

0.67

0.68

7

N･m

Aluminum, steel and others (HRC25 or below).

Workpiece material
Allowable min. grip innermm
diameterAllowable max. grip innermm
diameter
Grip inner diameter tapering angle(Draft angle)

13

3 Grippers

cm 3
cm

1

12

Cast iron are not usable.

5.2

5.5

5.8

6.1

6.4

6.7

6.7

7.0

7.3

7.6

7.9

8.2

8.7

9.7 10.7 11.7 12.7

5.8

6.1

6.4

6.7

7.0

7.3

7.4

7.7

8.0

8.3

8.6

9.2

9.7 10.7 11.7 12.7 13.7
Air expansion clamp

Grip inner diameter

CGY-F22E

3°or below
0.1 or below

Grip inner diameter circularity● Pressure range：0.3‒1 MPa (CGY-F22-055, 058, 061, 064, 067, 070A：0.3‒0.8 MPa)
● Proof pressure：1.5 MPa (CGY-F22-055, 058, 061, 064, 067, 070A：1.2 MPa)
● Please inquire if above terms are not applied.

● Operating temperature：0‒70 ℃

2：ISO R898 class 12.9
CGY
Long neck

1：By the eccentric mechanism, the expansion clamp does not have a workpiece positioning function.

● Fluid used：air

Clamping force & air pressure
1.8
1.6
CGY-F22

Clamping force (kN)

1.4

Air pressure

1.2

Clamping force
1.0

F=1.617×P

0.8

MPa 0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

kN 0.49 0.65 0.81 0.97 1.13 1.29 1.46 1.62

P：Air pressure (MPa)0.6● CGY-F22-055, 058, 061, 064, 067, 070A applicable air pressure shouldbe 0.3 to 0.8 MPa.

0.4
0.2
0
0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Air pressure (MPa)To download CAD data / To get updated information, visit www.pascaleng.co.jp

115

CGY- F22□□

Air expansion clamp Long neckAir blow model
model

Non-constant air blow model

CGY-F22-

model

CGY-F22E

Air expansion clamp

Non-constant air blow model
model

CGY-F22E

2 Grippers

2 Grippers

3 Grippers

ø5.5 5.8 6.1 6.4 6.7 7.0

ø7.0 7.3 7.6 7.9 8.2

ø8.5 9 10

ø11 12 13

PAT.

Sensor air：IN

Air blow ：IN
Sensor air ：Exh.
(Non-constant air blow model)

Unclamping detection
Incomplete clamping detection

Clamping
air pressure
CGYLong neck

Doubleacting2 Grippers

Air blow ：OUT
Sensor air ：Exh.
(Air blow model)

Space-saving clamping

Air expansion clamp model CGY

116

ａｉｒ

Unclamping
air pressure

Outer diameter：15‒24 mm
Outer diameter varies depending
on clamping hole diameter.
Refer to pages →124, 126, 128, 130
for dimensions.

Linear length 30 mm

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingWorkpiece setting (Unclamping completion)① Pistons Ⓐ & Ⓑ, as well as taper rod and gripper are raised by unclamping air pressure.
② Workpiece unclamping is completed by the sensor air, clamping and unclamping air pressure.
③ Set the workpiece onto the seating surface.

Taper rod
Seating surface

Workpiece
Piston Ⓐ
Scraper

Gripper

Sensor air

SleeveUnclamping completion

Piston Ⓐ

Piston Ⓐ blocks air ﬂow channel
to shut air and triggers sensor.
Piston Ⓑ

Clamping
air pressure

Unclamping
air pressure

Clamp condition

Air sensor signal

Air pressure switch

Unclamping
completion

Air sensor ON(Sensor air does not flow.)

Unclamping
air pressure ON

Sensor air

Workpiece holding (Clamping completion)① Piston Ⓑ and taper rod are lowered by clamping air pressure after releasing unclamping air pressure.
Air expansion clamp② The gripper expands horizontally along the tapered surface to grip inner face of clamping hole.
③ The gripper securely grips the inner face of clamping hole and pulls the workpiece down firmly onto theseating surface.
④ Workpiece holding is completed by the sensor air, clamping and unclamping air pressure.

Clamping hole

Seating surface

Tapered surface
Workpiece

CGY
Long neck

Taper rod

SleeveAir blow model：Exhaust
Piston Ⓐ

Gripper

Sensor air
SleevePiston Ⓐ

Clamping completion
Sleeve pushes down piston Ⓐ, air
ﬂows and sensor is not triggered.

Piston Ⓑ
Non-constant air blow model：
Exhaust(Air blow circuit)

Clamping
air pressure

Unclamping
air pressure

Clamp condition

Air sensor signal

Air pressure switch

Clamping
completion

Air sensor OFF

Clamping
air pressure ON(Sensor air flows.)

Sensor air

To download CAD data / To get updated information, visit www.pascaleng.co.jp117

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingLarge gripper expansion stroke
The gripper expands horizontally 1.0mm( ), which enables the accommodation of dimensional variations in diecast
bore diameters and ensures workpiece is held securely.

Grip inner diameterø10

Taper rod diameter
ø9.55

Min. grip inner diameterø9.7

Max. grip inner diameterø10.7

Draft angle of grip inner diametermax. 3°each side

Example：model CGY-F22E10：0.6mm stroke for CGY-F22-055, 058, 061, 064, 067, 070A. 0.7mm stroke for CGY-F22E070, 073, 076, 079, 082.

Taper rod and gripper with superior durability① The holding force of expansion clamp is transmitted from tapered surface to gripper, making it possible for the gripper
to hold onto inner face of clamping hole and hold the workpiece on the seating surface for secure workpiece clamping.
② Special steel with superior abrasion resistance is used for gripper to improve durability.
③ Tip section of taper rod has larger diameter than gripper and is well
chamfered to be a better guide when setting the workpiece.
Clamping hole
① Tapered surface③ Taper rod tip section

Gripper

Air expansion clamp② Gripper

CGY
Long neckSeating surface can be reground (Max. 0.1 mm)① When seating surface is damaged, the flange section can be dismounted and reground.
② Flange can be easily dismounted and reassembled at production site.

① Seating surface② Flange118

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingClamping hole pitch errors can be tolerated

Taper rod and gripper slide radially and tolerate pitch
errors (±0.6 ‒0.8 mm).
Taper rod and gripper are pushed back towards thecenter by scraper when unclamping.

Taper rod

Gripper

Allowable eccentricity±0.3mm (Grip inner diameter 5.5‒7 mm)±0.4mm (Grip inner diameter 7‒13mm)：CGY-F22-070A

Scraper

Sliding

Clamping hole

Allowable eccentricity±0.3mm (Grip inner diameter 5.5‒7 mm)±0.4mm (Grip inner diameter 7‒13mm)：CGY-F22-070A

By the eccentric mechanism, the expansion clamp does not have a workpiece positioning function.

Air expansion clamp

Incorporating strong air blowing circuit
Air blow from a gap between the gripper and scraper clears off metal chips and coolant that stay on the seating
surface. Flushing channel is also provided on the seating surface to remove the metal chips and coolants smoothly
during workpiece setting.

FlushingchannelScraper
CGYLong neck

Gripper
Scraper

Seatingsurface

Unclamping
air pressure

To download CAD data / To get updated information, visit www.pascaleng.co.jp

Air blow119

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingDetects clamping hole diameter that is too large
When the inner diameter of clamping hole exceeds tolerance value, then gripper will fail to gain grip on workpieceeven when extended to maximum reach. Piston Ⓐ lowers until end of stroke as it is pushed down by piston Ⓑ andblocks sensor air, which triggers air sensor and detects incomplete clamping.

Large clamping hole diameter
Maximum gripper expansion diameter

Gripper

Seating surface

Taper rod

Seating surface

Air expansion clamp

Gripper

SleevePiston Ⓐ

SleeveSensor air
Piston Ⓐ

CGYLong neck

Incomplete clamping
Piston Ⓐ lowers until end of
stroke and blocks air, allowing
sensor to detect the pressure.

Piston Ⓑ

Clamping
air pressure

120

Unclamping
air pressure

Sensor air

Clamp condition

Air sensor signal

Air pressure switch

Incomplete
clamping

Air sensor ON(Sensor air does not flow.)

Clamping
air pressure ON

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingDetects deformation of workpiece and floating of workpiece
When workpiece has significant deformation or when it is set poorly with gap of 1.2 mm above seating surface,then even when the gripper lowers until end of stroke, the workpiece is not held on seating surface. At this time,
piston Ⓐ lowers until end of stroke as it is pushed down by sleeve and blocks sensor air, which triggers air sensor
and detects incomplete clamping.

Faulty setting of workpiece
Seating surface

Incomplete clamping

SleevePiston Ⓐ

Clamping
air pressure

Workpiece set ﬂoating
1.2 mm and over above
seating surface

Piston Ⓐ lowers until end of
stroke and blocks air, allowing
sensor to detect the pressure.

Unclamping
air pressure

Clamp condition

Air sensor signal

Air pressure switch

Incomplete
clamping

Air sensor ON(Sensor air does not flow.)

Clamping
air pressure ON

Sensor air

Detects incomplete gripping
When the inner diameter of clamping hole is slightly larger than allowable value, or when the draft angle of grip
Air expansion clamp

inner diameter is large and results in incomplete gripping by the gripper, piston Ⓐ lowers until end of stroke as
sleeve pushes it down and sensor air is blocked, which triggers air sensor and detects incomplete clamping.

Gripper
Slipping of gripper

Incomplete clamping

SleevePiston Ⓐ lowers until end of
stroke and blocks air, allowing
sensor to detect the pressure.

Piston Ⓐ

Clamping
air pressure

CGYLong neck

Large draft angle of grip inner diameter

Unclamping
air pressure

Sensor air

Clamp condition

Air sensor signal

Air pressure switch

Incomplete
clamping

Air sensor ON(Sensor air does not flow.)

Clamping
air pressure ON

To download CAD data / To get updated information, visit www.pascaleng.co.jp

121CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingWith the development of the non-constant air blow expansion clamp, air consumption will be significantly decreased.
The traditional model ordinarily requires 50L/min (0.3MPa) flow rate (when grip inner diameter is ø12). The new model can reduce

Air blow model

Number of grippers

Grip inner diameterø 5.5 5.8 6.1
2 Grippers

Clamping force

0.81 kN

Model(Air pressure 0.5MPa)

CGY-F22- Grip inner diameter

Clamping force

Model

6.4 6.7 7.0

Non-constant air blow model

Number of grippers

Grip inner diameterø 7.0 7.3 7.6
7.9 8.2

CGY-F22E Grip inner diameter2 Grippers
ø 8.5

9

10

0.81 kN(Air pressure 0.5MPa)

CGY-F22E Grip inner diameter

CGY
Long neckAir expansion clamp

0.81 kN(Air pressure 0.5MPa)

122

Number of grippers

Grip inner diameter

Clamping force

3 Grippers

ø 11 12 13(Air pressure 0.5MPa)0.81 kN

Model

CGY-F22E Grip inner diameter

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingair consumption and help promote energy conservation. However air blow at time of workpiece replacement is a must.

Space where metal chips can intrude is createdScraper

Gripper

Rod

Space
A

A

Pages →124, 125
B

ScraperB

Rod

When clamping

2 Grippers

A-A

B-B

Because of space between scraper, gripper and the rod, air blow must always be performed to prevent intrusion of chips.

Secure chip protection

Rod

Gripper

A

A

B

Scraper

Scraper

ScraperRod

Air expansion clamp

Pages →126‒129
2 Grippers
B

When clamping

A-A

B-B

CGY
Long neck

Because there is no space between scraper, gripper and the rod, it is not necessary to perform air blow during cutting process.

Rod

GripperA

A

Scraper
When clamping

Scraper

Scraper

B

B

Pages →130, 131Rod

3 Grippers

A-A

B-B

Because there is no space between scraper, gripper and the rod, it is not necessary to perform air blow during cutting process.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

123CGY- F22- □Air expansion clamp Long neckAir blow model

Doubleactingａｉｒ

Dimensions
Seating surface
outer diameter øU

5Seating surface
inner diameter øT

A

60°

45

A

55.6

ø7

A-A
45
66

Details
Rod outer diameter
Gripper outer diameter
øR
øAD

4

7.5

57.5

4.5

10°

R0.6

2

R5

4-ø9.5
Clamp removal thread
4-M6×1 thread through770

øS -0.05

50 ±0.005

30

30°

5

19.5

AA (5°tapering)4-ø5.5O-ring AS568-032

Grip inner diameter usage requirements

3-O-ring P4

ø52.5-0.030Min. 4

Min. 828.5

28.5

Clamping air port

Blind hole

Blow air supply port

Through hole

14

mm

14

14

CGY
Long neckAir expansion clamp
Air blow modelø53 f 7 -0.060

Sensor air supply port

● Mounting screws are not included.

Model

CGY-F22-□
055

058

061

064

067

070A

øR

5

5.3

5.6

5.9

6.2

6.5

øS

15

15

15

15

15

15.5

øT

7.8

8.1

8.4

8.7

9

9.3

U

11

11.6

12.2

12.8

13

13.5

AA

2.5

2.5

3

3

3

3

ø AD

3.8

4.1

4.4

4.7

5.0

5.3

● Material used for O-ring is fluorocarbon (Hardness Hs90).
● Seating surface hardness is HRC55.
● The above diagram indicates unclamped condition.

124● CGY-F22-055,058,061,064,067,070A are made to order.

CGY- F22- □Air expansion clamp Long neckAir blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3 -Max. ø2.5

Blow air supply port
Clamping air port

ø53 H8

30°

1
6.3

Rz

Min.20

Rz6.3

Rz6.3

+0.0460(H8 range)
Min.104 - M545

R0.4

Unclamping air portside face processing range

(ø3)
+0.2

Unclamping air port

Unclamping air portbottom face processing range
Rz: ISO4287(1997)

CGY
Long neck：Unclamping air port must be made on either side or bottom face.

Air expansion clamp
Air blow model

ø52.8 0● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

125CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

Doubleactingａｉｒ

Dimensions
Seating surface
outer diameter øU

5Seating surface
inner diameter øT

A

60°

45

A

55.6

ø7

A-A
45
66

Details
Rod outer diameter
øF4
øAD

30°

2

58

4

8

Gripper outer diameter
øF3

77.5

R5

4-ø9.5

10°

Clamp removal thread
4-M6×1 thread through50 ±0.005300øS -0.1

R0.6

5

4-ø5.519.5

4.5

4 (5°tapering)O-ring AS568-032

Grip inner diameter usage requirements

3-O-ring P4

ø52.5-0.030Min. 4

Min. 8.5
28.5

28.5

Clamping air port

Blind hole

Blow air supply port
(Sensor air exhaust port)

Through hole

14

mm

14

14

CGY
Long neckAir expansion clamp
Non-constant air blow modelø53 f 7 -0.060

Sensor air supply port

● Mounting screws are not included.

Model

CGY-F22E□
070

073

076

079

082

ø F3

6.5

6.8

7.1

7.4

7.7

ø F4

6.55

6.85

7.15

7.45

7.75

øS

18

18.3

18.6

18.8

18.8

øT

10.6

10.9

11.2

11.5

11.8

øU

16

16.3

16.6

16.9

17.2

ø AD

5.4

5.7

6

6.3

6.6

● Material used for O-ring is fluorocarbon (Hardness Hs90).
● Seating surface hardness is HRC55.
● The above diagram indicates unclamped condition.

126● CGY-F22E070,073,076,079,082 are made to order.

CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3 - Max. ø2.5

Blow air supply port
(Sensor air exhaust port)

Clamping air port
45

1
6.3

Rz

Min.20

Rz6.3

Rz6.3

+0.0460(H8 range)
Min.10ø53 H830°

4 - M5R0.4

Unclamping air portside face processing range

(ø3)
+0.2

Unclamping air port

Unclamping air portbottom face processing range
Rz: ISO4287(1997)

CGY
Long neck：Unclamping air port must be made on either side or bottom face.

Air expansion clamp
Non-constant air blow model

ø52.8 0● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp127

CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

ａｉｒDoubleactingDimensions
Seating surface
outer diameter øU

75

ø

A

60°

45

A

55.6

Seating surface
inner diameter øT

A-A
45
66

Details
Rod outer diameter
øF4
øAD

30°

R1

59
78.5
19.5

5 (5°tapering)

4.5

10°

50 ±0.005

R5

4-ø9.55300

øS -0.1
Clamp removal thread
4-M6×1 thread through

2

5

9

Gripper outer diameterøF34-ø5.5

Grip inner diameter usage requirements

O-ring AS568-032

Min. 9.5-0.030
ø53 f 7 -0.060

Blind hole
28.5

28.5

Clamping air port

Through hole

Blow air supply port
(Sensor air exhaust port)

mm
Model

CGY-F22E□
085

09

10

ø F3

8

8.5

9.5

ø F4

8.05

8.55

9.55

øS

19.5

20

21

øT

12.1

12.6

13.6

øU

17.5

18

19

ø AD

6.3

6.8

7.8

14
14

14

Air expansion clamp
Non-constant air blow model
CGYLong neck

Min. 5

3-O-ring P4

ø52.5

Sensor air supply port

● Mounting screws are not included.
● Material used for O-ring is fluorocarbon (Hardness Hs90).
● Seating surface hardness is HRC55.
● The above diagram indicates unclamped condition.

128● CGY-F22E085 is made to order.

CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3 - Max. ø2.5

Blow air supply port
(Sensor air exhaust port)

Clamping air port
45

1
6.3

Rz

Min.20

Rz6.3

Rz6.3

+0.0460(H8 range)
Min.10ø53 H8

30°

4 -M5

R0

.4
Unclamping air portside face processing range

(ø3)
+0.2

Unclamping air port

Unclamping air portbottom face processing range
Rz: ISO4287(1997)

CGY
Long neck：Unclamping air port must be made on either side or bottom face.

Air expansion clamp
Non-constant air blow model

ø52.8 0● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

129CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

Doubleactingａｉｒ

Dimensions
Seating surface
outer diameter øU

75

Seating surface
inner diameter øT

A

60°

45

A

55.6

ø

A-A
45
66

Details
Rod outer diameter
øF4
øAD

R5

10°

4-ø9.5

5.6

60

2Gripper outer diameterøF35 (5°tapering)

5

4-ø5.519.5

4.5

Clamp removal thread
4-M6×1 thread through

R1

79.5

0
øS -0.1

50 ±0.005

30

10

30°

Grip inner diameter usage requirements

Blind hole

28.5

28.5

Clamping air port

Through hole

Blow air supply port
(Sensor air exhaust port)

mm
Model

CGY-F22E□
11

12

13

ø F3

10.5

11.5

12.5

ø F4

10.55

11.55

12.55

øS

22

23

24

øT

14.6

15.6

16.6

øU

20

21

22

ø AD

8.2

9.2

10.2

14
14

14

Air expansion clamp
Non-constant air blow model
CGYLong neck-0.030
ø53 f 7 -0.060

Min. 10.5

3-O-ring P4

ø52.5

Min. 5.6

O-ring AS568-032

Sensor air supply port

● Mounting screws are not included.
● Material used for O-ring is fluorocarbon (Hardness Hs90).
● Seating surface hardness is HRC55.
● The above diagram indicates unclamped condition.

130● CGY-F22E11, 12, 13 are made to order.

CGY- F22E□

Air expansion clamp Long neck Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3 -Max. ø2.5

Blow air supply port
(Sensor air exhaust port)

Clamping air port
45

1
6.3

Rz

Min.20

Rz6.3

Rz6.3

+0.0460(H8 range)
Min.10ø53 H8

30°

4 -M5

R0

.4

Unclamping air portside face processing range

(ø3)
+0.2

Unclamping air port

Unclamping air portbottom face processing range
Rz: ISO4287(1997)

CGY
Long neck：Unclamping air port must be made on either side or bottom face.

Air expansion clamp
Non-constant air blow model

ø52.8 0● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp131CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingGripper set replacement

Number of grippers

Gripper set model

Clamp model

CGY-F22-J055

CGY-F22-055

CGY-F22-J058

CGY-F22-058

CGY-F22-J061

CGY-F22-061

CGY-F22-J064

CGY-F22-064

CGY-F22-J067

CGY-F22-067

CGY-F22-J070A

CGY-F22-070A

CGY-F22EJ070

CGY-F22E070

CGY-F22EJ073

CGY-F22E073

CGY-F22EJ076

CGY-F22E076

CGY-F22EJ079

CGY-F22E079

CGY-F22EJ082

CGY-F22E082

CGY-F22EJ085

CGY-F22E085

CGY-F22EJ09

CGY-F22E09

CGY-F22EJ10CGY-F22E10

CGY-F22EJ11CGY-F22E11

CGY-F22EJ12CGY-F22E12

CGY-F22EJ13

CGY-F22E13

Set description

Scraper × 1

Gripper(Refer to table left)

O-ring × 1
CGY-F22-J055‒J070A
are not included.

2 Grippers

It is recommended that grippers, scraper andindividual gripper. (Refer to the table on theleft for the gripper set model.)Rod height

10

9

ø1 1

8

‒ø1

3

ø8.5

‒ø1

7

Rod height calculation formula0

grip inner diameter andø5.5 ‒ ø7 ：6.32-2.35× Actual
nominal grip diameter difference
6

‒ø7

5
-0.3

-0.2

Allowable min.
grip inner diameter

-0.1

0

0.1

Nominalgrip inner diameter

0.2

0.3

grip inner diameter andø7 ‒ ø8.2：6.58-2.84× Actual
nominal grip diameter difference

ø7‒

ø5.5

ø8.2

grip inner diameter andø8.5 ‒ ø10 ：7.82-2.35× Actual
nominal grip diameter difference

(070

0.4

A)

0.5

0.6

0.7

ø5.5‒ø7(070A) ø7‒ø8.2
Allowable max.
Allowable max. Allowable max.
grip inner diameter
grip inner diameter grip inner diameterDiﬀerence between actual grip inner diameterand nominal grip diameter (mm)132

ations. Replace grippers in sets and not just an

Grip inner diameter & rod height when clamping

Rod height (mm)CGYLong neckAir expansion clamp

3 Grippers

O-ring be replaced after about 200,000 oper-

grip inner diameter andø11 ‒ ø13 ：8.82-2.35× Actual
nominal grip diameter difference：CGY-F22-070A
Example：When CGY-F22E10 (Nominal grip diameter : ø10)is clamping ø9.8 hole
Rod height = 7.82 - 2.35×(-0.2) = 8.29mm

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleacting

System configuration example

model CGY

Workpiece positioning pin（Round）2

Expansion clamp
model CGY

Workpiece
guide 1

Expansion clamp
model CGY

Workpiece guide 1

Expansion clamp

Workpiece positioning pin（Diamond）2model CGY

Workpiece positioning pin（Round）2

Workpiece guide

1

10mm and overExpansion clamp

Grip inner diameter D

Rod outer
diameter dExpansion clamp
model CGY

CGYLong neck

Expansion clamp Workpiece positioning pin
model CGY
（Diamond）2

Air expansion clamp

Diametral space
D-d and under

1: When using automatic or robotic conveyers, prevent damage to clamp caused from
impact by setting workpiece guides. Using the above guide as reference, accurately
position the holes when using workpiece guides.
2: The expansion clamp does not have a workpiece positioning function.
Install workpiece positioning pins (or similar).

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CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingAir blow model pneumatic circuit diagram

P.S. 1

0.3MPa(Recommended
air pressure)

5μm
Clamping
air pressure

Air blow

P.S. 25μm

0.1MPa(Recommended
air pressure)Ⓒ

Air sensor unit

(The circuit diagram is subject to change according to the model of sensor.)

5μm
Unclamping
air pressureⒷ Speed controller

Sensor air
0.2MPa(Recommended air pressure)(Meter-out control)● Be sure to air blow upon loading and unloading workpiece and when clamping and unclamping. During cutting,
if chips adhere to the gripper such as when going through the clamping hole, continue air blowing during
processing as well.
● Air blow pressure must be set to 0.1MPa when checking the operation of the clamp with the air sensor.

Air expansion clamp

Air blowing

Clamping

Air blow

CGYLong neckAir blowSensor air
ExhaustClamping
air pressure

Air blow

134

Unclamping
air pressure

Sensor air

Air blow

Unclamping
air pressure

Sensor air

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingNon-constant air blow model pneumatic circuit diagramⒶ Solenoid valve

P.S. 1

0.3MPa(Recommended air pressure)

5μm

5μm
Clamping
air pressure

Air blow(

P.S. 2

Exhaustwhen OFFⒸ)

Air sensor unit

(The circuit diagram is subject to change according to the model of sensor.)

5μm
Unclamping
air pressureⒷ Speed controller

Sensor air
0.2MPa(Recommended air pressure)(Meter-out control)● Air blow will not be necessary during cutting process. Be sure to air blow upon loading and unloading workpiece
and when clamping and unclamping to remove metal chips and debris.
● The solenoid valve Ⓐ must be closed when checking the operation of the clamp with the air sensor. Also 3
port type of solenoid valve must be used in the circuit. If 2 port type of the valve is used, sensing air cannot be
exhausted and clamp detection function is disabled.

Clamping

Air expansion clamp

Air blowing

CGY
Long neckAir blow

Clamping
air pressure

Solenoid valve of

Solenoid valve ofⒶ air blow circuitⒶ air blow circuit
Unclamping
air pressureON
Air blowSensor air

Unclamping
air pressure

Sensor air

OFFExhaust(Sensor air)

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135

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleacting● Operation speed must be adjusted by a meter-out type speed controller Ⓑ being provided in the unclamping
circuit. By the adjustment, air flow in unclamping circuit is squeezed and back pressure is generated. The backpressure acts on the piston Ⓐ of the clamp and makes the gripper expand first then the taper rod strokes down
to clamp. If meter-in type speed controller is installed in the circuit, it dumps the air rapidly and makes the gripper move very quick which causes incomplete clamping.
● Adjust air flow when clamping to have the taper rod full stroke in 0.3 sec or over.
Excessive air flow to the clamp gives impact load and may cause breakage of the parts.

Clamping hole

Taper rod

Workpiece
Gripper
SleevePistonⒶ

PistonⒷ

Clamping air pressure

Unclamping air pressure

Air expansion clamp

Unclamping air pressure circuitⒷ Speed controller

CGY
Long neckAir sensor unit Ⓒ recommended condition of use

ISA3-F/G series
Supplier andmodel

Air supply
pressure

136

manufactured by SMC

GPS2-05 , GPS3-E series
manufactured by CKD
0.2 MPa

Inner diameterof pipingø4 mm (ISA3-F：ø2.5 mm)

Overall piping
length5 m or less

● Use a solenoid valve with needle for air sensor
unit Ⓒ and control it supplying air all the time inorder to eliminate intrusion of chips or coolant.
● There is a case that air sensing cannot be madesuccessfully as designed when it is used out of
the usage shown on the left. Contact Technicalservice center for more details.

CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingOperation cycle
The clamp should be controlled with the cycle in the diagram shown below to detect the operation status exactly.

Case of air blow model
Workpiece

Stateloading

Clamping

Air blow

Clamping

switching completion 1(Machining)

Air blowswitching

Unclamping

Air blow

Workpiece

switching completion 2 switching

Air blow

Unclamping

unloading

Workpiece Clamp
clamp
Unclamp0.3MPa4

Air blow
0.1MPaON
Sensor air
OFF5

Clamping air pressure
P.S. 1

OFF

ON

OFF

Unclamping air pressure
P.S. 2

ON

OFF

ON

OFF or ON 3

Air sensor

1 : Clamping completion: P.S. 1＝ON

P.S. 2＝OFF

Air sensor＝OFF

2 : Unclamping completion : P.S. 1＝OFF

P.S. 2＝ON

Air sensor＝ON

3 : OFF : Complete clamping
4 : Solenoid valve control

ON

ON : Incomplete clamping
5 : Air pressure switch, Air sensor signal

Workpiece

Stateloading

Clamping

Air blow

ClampingOFF

completion 1(Machining)

Air blowON

Unclamping

Air blow

Unclamping

Air blow

Workpiece

OFF

completion 2

ONunloadingAir expansion clamp

Case of non-constant air blow model

Workpiece Clamp
clamp
UnclampON
Air blow

CGYLong neck

4

OFF
ON
Sensor air
OFF5

Clamping air pressure
P.S. 1

OFF

ON

OFF

Unclamping air pressure
P.S. 2

ON

OFF

ON

OFF or ON 3

Air sensor

1 : Clamping completion: P.S. 1＝ON

P.S. 2＝OFF

Air sensor＝OFF

2 : Unclamping completion : P.S. 1＝OFF

P.S. 2＝ON

Air sensor＝ONON

3 : OFF : Complete clamping ON : Incomplete clamping
4 : Solenoid valve control
5 : Air pressure switch, Air sensor signal

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137CGY- F22□□

Air expansion clamp Long neckａｉｒDoubleactingCaution in use● Be sure to make inner diameter of air blow circuit 4 mm
and over except for clamp mounting surface.

● Perform unclamping completion detection, clamping completion detection and incomplete clamping detection withcombination actions of pressure switch and sensor shownin table below. (Refer to the pneumatic circuit diagram on● Set the workpiece in such a way that the clamping hole ofpage →134, 135 for details.)

workpiece is perpendicular to seating surface. Clamping intilted condition results in uneven contact of gripper withhole, which leads to concentration of load that may cause
damage.

● Verify that there are no metal chips or debris on seating
surface of clamping hole and clamp body before setting
workpiece. Allowing intrusion of metal chips results in insecure clamping, which can lead to low grade of machining
accuracy.

● Flaring (Biting) of gripper into workpiece varies depending
on workpiece material or thermal processing conditions.
With regards to conditions of workpiece and clamping hole,refer to page →115. Secure clamping is not possible when
workpiece or clamping hole that does not satisfy these
conditions is used.

● If clamping hole serves as taper hole (cast draft hole withAir expansion clamp

gradient), then perform test clamping using applicable
workpiece beforehand to verify that there are no problems
with operations.

● Deformation may occur if the thickness of clamping hole

CGYLong necksection of workpiece is extremely thin. Use applicable
workpiece to perform test clamping beforehand to verify
that there are no deformations in thin portion.

● Supply the dry and filtered air. Particulate size 5μm or lessis recommended.

● Measure seating surface flatness with air pressure appliedon clamping side, or by applying air pressure on neither
clamping nor unclamping side.

138

Applications

Pressureswitch 1(P.S. 1)Pressureswitch 2(P.S. 2)Air sensor

Unclamping
completion detection

OFF

ON

ON

Clamping
completion detection

ON

OFF

OFF

Incomplete
clamping detection

ON

OFF

ON