JW Winco

Our customers in the USA are managed by JW Winco. Please, use the website of JW Winco: jwwinco.com

GN 865 Power clamps pneumatic


Product description


The maximum clamping moment of the power clamps GN 865 is reached once the clamping arm 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 865 Power clamps, pneumatic sketch

Article options / Table


BIClamping arm vertical
Show / Hide columns
max. Clamping
in N
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 H8d4d5
h1h2l1 -0,5
20602300125010,51028M 574,2M 51616150
321503040222015,51240M 695G 1/82121206
403004060364018,51650M 8116,8G 1/82626244
504757200490021,51860M 10138,5G 1/83131279
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l2 -0,5l3l4l5l6l7 -0,5m1

Build & Price

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Operating principle dead point mechanism

Skizze Funktionsprinzip GN 865

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, 40 and 50 mm yield a clamping force of 60 Nm up to 475 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 78,15 €
gross 489,47 €
In stock
Weight: 0,620 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 Euro -> 10 % discount
from 275,00 Euro -> 20 % discount
from 375,00 Euro -> 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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Our partner in the USA
Unser Partner in der USA
Our customers in the USA are served by JW Winco, USA. Please use the website of JW Winco, USA.
Unsere Kunden in der USA werden durch JW Winco, USA bereut. Bitte benutzen Sie die Webseite von JW Winco, USA.
JW Winco, USA
JW Winco, USA
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