Clamps grip from within the workpiece
An
Elesa (UK) product story
Edited by the Engineeringtalk editorial team
Nov 1, 2007
The precise self-centring action of the GN411 provides solid stable clamping of workpieces with uneven or irregular external surfaces
Elesa's GN411 grips the workpiece from within or machining or secondary operations.
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 of 12mm up to 102mm.
Operation is accomplished manually by means of clamping screw or by hydraulic/pneumatic activation.
The unit contains a circular cage with three or six hardened balls (dependant on the size of the unit), which are forced outwards over a 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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Tel +44 1526 322670
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