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Designation
Centring Clamp
Form
A
Version 1
with ball
Body material
steel
Component material
steel
Body surface finish
hardened and black oxid finish
Component surface finish
hardened and ground
D2=Ball Ø
2,5
D=Diameter min.
11,7
D=Max. diameter
14,2
F3=Retaining force max. kN
0,5
M=Tightening torque max. Nm
5
N=No. of balls
3
R=Application
blanks
A
3,5
Clamping type
internal clamping
D1
M04
D2
10
D3
1,5
D4
4,3
H
15
H1
10
H2
4,2
H3
3
H4
1,5
L
3,5
M
2,5
SW
3

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 A: with ball suitable for tensioning in holes, where slight impressions are acceptable.
Technical Data
Repetitive accuracy ±0.025
Concentric accuracy ±0.05
Application
To position and centre existing bores on the machining surface.
Advantages
- Precise self-centring.
- Distortion free clamping.
- Large spread range.
- Low overall height.
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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