Gripper clamps from within
An
Elesa (UK) product story
Edited by the Engineeringtalk editorial team
Aug 16, 2006
Sometimes the only way to hold a workpiece for machining or secondary operations is by gripping it from within.
Sometimes the only way to hold a workpiece for machining or secondary operations is by gripping it from within.
Elesa's GN411 does exactly that - it features an expanding clamp with a multipoint contact system.
The precise self-centring action of the GN411 provides solid stable clamping of workpieces with uneven or irregular external surfaces - such as castings.
GN411 clamps are available to accommodate bores from 12 to 102mm.
Operation is manually by means of clamping screw or by hydraulic/pneumatic activation.
The unit contains a circular cage with three or six hardened balls (depending on size of unit), which are forced outwards over an ingenious double cone ramp system, thus exerting an outward thrust and gripping the workpiece securely.
For delicate materials the GN411 can be supplied with barrel shaped hex section segments in place of balls.
These offer a more gentle surface gripping action by spreading the load over a larger area.
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Contact Elesa (UK)
Tel +44 1526 322670
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