JW Winco

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GN 866 Power clamps pneumatic, for centred clamping


Product description


The clamping forces FS of power clamps GN 866 are directed inwards at the clamping arms.

The maximum clamping moment of the power clamps GN 866 is reached once the clamping bar is at the end of its stroke. For this reason the working stroke should be completed as closely as possible to the stroke end.


Steel C 45

max. pressure 10 bar


On request

with anti-stick coating for protection against welding spray and corrosion

Technical drawing

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GN 866 Power clamps, pneumatic, for centred clamping sketch

Article options / Table


BC2 Clamping arms vertical for centred clamping
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Max. clamping
in Nm
at 6 bar

FH in N
capacity at r
at 6 bar

FS in N
force at r
at 6 bar

a-0,2d1 h8d2d3 H8d4d5l1 -0,5l2 -0,5
20601150630211028M 574,2M 5150171
3215015201110311240M 695G 1/8206237
4030020001800371650M 8116,8G 1/8244282
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Build & Price

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Operating principle dead point mechanism

Skizze Funktionsprinzip GN 866

These pneumatically operated power clamps (Patent MISATI) are used for clamping, holding, gripping and positioning of work pieces in jigs and handling systems.

The salient points of these power clamps are:
• the high clamping force
• the small dimensions
• the reduced air consumption
• the light weight

The drawings shown here explain the functional principle of the dead point mechanism.

Pistons with diameters of 20, 32 and 40 mm yield a clamping force of 60 Nm up to 300 Nm, which leads to clamping forces being much above those of competitors’ power clamps.

The power clamps have been designed and configured to achieve an extended life. Functional tests have proved that even after 20 million cycles they were still serviceable.

Further salient design points are:

• The clamp is kinematically designed such that self-retention (holding force FH) is achieved in the clamped position (clamping force FS) after passing the dead point due to irreversibility.

• The forward stroke sequence of the clamping arm is rapid but the ultimate clamping action is slow and as a result pneumatic damping is normally not required. Upon request, however, it can be supplied when big masses are moved.

• The clamping mechanism is fitted with needle bearings which give optimum clamping forces and reduced wear.

• The steel cylinder with the integrated clamping mechanism are in one unit. This leads to high stability for these small units with an extended range of applications. The placement of the air connection at the bottom end leads also to many other advantages.

Selected Part (How to order)

Total (net)
plus VAT 71,67 €
gross 519,61 €
In stock
Weight: 0,650 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS: Yes
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Please note our quantity discounts.
With a total value (net) per order:
from 175,00 € -> 10 % discount
from 275,00 € -> 20 % discount
from 375,00 € -> 30 % discount
With a total value (net) per order:
All prices in accordance with our price list No. 52, valid from 1 May 2019, plus VAT only valid for Germany.

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