Rotary lever clamps enclosed, hydraulically, double-acting, positive air pressure and position control

The enclosed rotary lever clamp with pneumatic position control is particularly suitable for clamping fixtures where there is limited space for the installation of workholding elements and where a very large amount of chips is produced.The clamping lever is designed so that the chips are scraped off at the front and top by a metal wiper. There is also an internal soft wiper and a positive air pressure connection. The construction and compact design of the rotary lever clamps provide flexible solutions for a wide range of installation conditions.

The double-acting rotary lever clamps are used in clamping fixtures whose oil supply is made through drilled channels. To swing down the clamping lever, the linear motion is used pro rata which clamps the workpiece.

To unclamp, the clamping lever swings back to where the workpiece can be safely taken out. Clamping levers are not included in scope of supply! You can order standard clamping levers from different materials and various lengths as accessories. The rotary lever clamp can also be assembled with special and self made clamping levers. The clamping force depends on the length of the clamping lever.

The enclosed rotary lever clamps have the same mounting dimensions as the double-acting rotary lever clamps on data sheets 250-10/250-20 and are therefore interchangeable.

Pneumatic position control:

The clamping levers are equipped with elastic sealing plugs on both sides. There are two drilled channels in the rotary lever clamp, into which compressed air can be introduced into the clamping lever guide of the housing. The bore holes are arranged in a way that they are sealed in the clamping position or in the declamping position by the sealing plug of the clamping lever.
This generates a pressure increase in the pneumatic line, which can be monitored by using standard pneumatic pressure switches in the respective position.
The pressure switch registers the pneumatic pressure rise and generates an electrical signal which is forwarded to the connected control unit.

• Clamping without shear forces
• Pipeless oil supply
• Partial retractable housing
• Individual clamping levers mountable
• Control position unclamped/clamped
• Optimum chips protection
• Operating temperature -10ºC to +80ºC
  
  

Operating conditions:

The clamping lever is coupled with the piston rod. On the double-acting rotary lever clamps, the clamping lever is unclamped by the pressure medium. When installing the rotary lever clamps, the flange surface should be adjusted to the height of the workpiece. The clamping point should be in a horizontal position. Workpiece tolerances can be compensated in spite of the short clamping stroke.

Safety instruction:

The enclosed rotary lever clamps can generate great forces. Workpieces and fixtures must be suitable for this. During operation, danger of crushing is given. Accident prevention regulations must be observed. The rotary lever clamps must regularly be checked for contamination and cleaned when necessary.

The enclosed rotary lever clamp is basically suitable for any mounting position.

Operating pressure:

pmax. 350 bar (hydraulically)

 

Operating method:

double-acting

 

Designs:

for hydraulics

 

Size:

12, 16, 20, 25, 32, 40 or 50 mm

 

Piston force:

hydraulically from 1,7 kN at 100 bar up to 83 kN at 350 bar

 

Ports:

drilled channels

Data sheet (PDF):

 

For technical details and dimensional drawings download the current data sheet.