AMHK-S
PNEUMATIC HOOK CLAMPS (Spring Clamping)
Body/ Clamp-tip Holder Rod/ Rod Guide
Clamp Tip
Aluminum
Anodized
Steel (S45C)
(Body: Natural color) Electroless nickel plated
(Clamp-tip Holder: Blue)
★Key Point
Projection Range
of Clamp Tip
SUS304
SWPA wire
stainless steel
L4
L
L3
L2
H4
H5
L1
H3
M
M５×０．８
Unclamping Port
D
Part Number
Projection Range
W1 W2
of Clamp Tip
AMHK14-3S
AMHK14-5S
AMHK20-3S
AMHK20-5S
Part Number H2
AMHK14-3S
52
AMHK14-5S
AMHK20-3S
67
AMHK20-5S
H2
15
H1
H
D1
T
Clamping Stroke Smax
W2
W
W1
Can keep clamping without
air supply by inner spring.
Spring
T
H
H1
L
L1
L2
L3
W
D
D1
M
6
10
5
2
13
3
35
17
18 7
14 19.5 26 M22×1.5
8
15
8
3
14
4
45
23
22
20 25.5 32 M28×1.5
H5
L4
H3
H4
47
5
5.5 13
59
8
8
18
Clamping Force Weight
（N）
（g）
10～23
20～45
35～55
55～85
70
170
10
Specifications
■How To Determine Output Force
Type
Clamp
Mechanism
Unclamp
Minimum Operating Air Pressure *)
Spring
Air
(Mpa) 0.3 0.5 0.3 0.5
～
70 110
～
Clamping End
60
～
Clamp Starting Position Gmin.(N) 30
The output force G(N) within clamping stroke can be
determined from the following formula.
Gmin.（N）－Gmax.（N）
G（N）＝Gmin.（N）－
×S（mm）
１０（mm）
Gmin．
Clamp Starting Position
G Output Force
S Stroke
～
Output Force **)
14-3S 14-5S 20-3S 20-5S
Gmax.(N) 15
25
45
75 Smax. Clamping Stroke
Clamping Stroke Smax.
Cylinder Capacity Unclamp
(mm)
(cm3 )
10
1.5
3.1
Gmax.
Clamping End
Clamping Force
Note: Max. allowable operating air pressure: 0.7MPa
*) Minimal air pressure required for unclamping.
**) The stated values depend on an amount of the spring compression.
For the output force within the clamping stroke, see the formula hereinafter.
Features
Notes
・ Perfect for preventing accidents caused by decreasing of air pressure.
・ Perfect for clamping thin workpieces or clamping with light force.
The clamp arm swivels 360゜ freely.
To lock the clamp arm, use AMHK-BK Guide
Brackets(to be ordered separately).
How To Use
■How To Operate
Air Release
Clamp
Release air for clamping by inner spring.
Air Supply
Unclamp
Supply air for unclamping.
■How To Adjust the Clamp Tip Length
Clamp Arm
Open-end Wrench
Hex Socket Countersunk Head Screw
Lift
Hex Wrench
Clamp Tip
2 Flats of Rod
Air Supply
Bolt
Lift the clamp arm and fit a wrench onto the 2 flats of the piston.
(Supplying air or screwing in a bolt facilitates lifting the clamp arm.)
Lock the piston with a wrench, and then
loosen the hex socket countersunk head
screw with a hex wrench.
Adjust the projection range of the clamp tip with the
holder loosened. (For tightening of the hex socket
countersunk head screw, follow back the loosening steps.)
■Mounting-Hole Dimensions
h
d
Ｍ１
Part Number
M1
d
AMHK14-3S
M22×1.5 27
AMHK14-5S
AMHK20-3S
M28×1.5 33
AMHK20-5S
h
＋０．５
（　０
）
5
8
Performance Curve
The clamping forces vary with the desired stroke.
Performance curve directed below shows stroke
vs. clamping force.Determine a proper type from
the performance curve.
Clamp Starting Position
０～
Output Force
Stroke Used (See ｔable)
Clamping Stroke
Clamping End
～１０
Clamping Force
AMHK14-5S
25
Output Force
20
15
Clamping Force
10
5
０
２
４
６
８
Clamping Force(N)
Clamping Force(N)
AMHK14-3S
３０
１０
６０
50
Output Force
40
30
Clamping Force
20
10
０
２
Stroke(mm)
Output Force
50
40
Clamping Force
30
20
10
０
２
４
６
Stroke(mm)
６
８
１０
AMHK20-5S
８
１０
Clamping Force(N)
Clamping Force(N)
AMHK20-3S
７０
60
４
Stroke(mm)
１２０
100
Output Force
80
60
Clamping Force
40
20
０
２
４
６
Stroke(mm)
８
１０