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Designation
Centring Clamp
Form
B
Version 1
hexagon
Body material
steel
Component material
steel
Body surface finish
hardened and black oxid finish
Component surface finish
hardened and ground
Steel code
1.2842
D=Diameter min.
54,5
D=Max. diameter
70,5
F3=Retaining force max. kN
8
Form=Hexagon
16
M=Tightening torque max. Nm
43
N=No. of hex
6
R=Application
machined
A
15
Clamping type
internal clamping
D1
M14
D2
45
D3
5
D4
M08
H
49,9
H1
40,6
H2
23,7
H3
19,1
H4
9,3
K
16
L
9
L1
24,5
L2
32
M
6,5
SW
13

Description

Material
Body 1.2842.

Ball and hex segments 1.4112.

Tension spring 1.4310.
Version
Body hardened and black oxidised.
Ball and hex segments hardened and ground.
Note
Form B: With hexagons for sensitive hole surfaces.
Technical Data
Repetitive accuracy ±0.025
Concentric accuracy ±0.05
Application
For centre positioning and clamping in blind holes. Operated from below, manual or automatic using pneumatics or hydraulics.
Advantages
- Precise self-centring.
- Distortion free clamping.
- Large spread range.
- Low overall height.
- Positive down force.
Drawing reference
Form A:
With balls for holes where light marking is acceptable.
Form B:
With hexagons for sensitive hole surfaces.

1) Mounting aid:
pin to accurately position the mandrel segments.
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