Base: Cast steel, black lacquered finish
Other parts: St. 60 steel, zinc plated,
blue passivated finish
Bearing bolts case-hardened
Double-action air cylinder, maximum pressure 6
All mobile sections lubricated with special grease
Type EP: With weldable solid clamping arm
Version M (optional): With magnetic piston
GN 861 Heavy-duty pneumatic toggle clamps have been constructed in such a way as to make them easy to unmount. The bearing bolts are axially fixed with circlips. This allows the clamping arm to be modified to suit any particular application.
To ensure an extended life of the mechanical parts as well as the air cylinder, the operating pressure should not exceed 6 bar. In addition a lubrication control unit should be mounted in the air in-feed line.
GN 861 heavy-duty pneumatic toggle clamps are also available as version M (magnetic piston). In conjuction with a GN 896.3 proximity switch, the piston position is sensed and the generated signal can be used in sequence control systems.
See also General Information on Toggle Clamps.