UNILOCK Clamping chuck function

The UNILOCK chuck function is explained using the ESM 138 installation clamping chuck.

1 Clamping knob
The UNILOCK Clamping knob connects the Clamping chuck to the work piece or the device 
being position and held. The Clamping knob mounting method depends on the work piece weight or the machining process. The appropriate sized attachment thread needs to be used. 

 4 Piston
The UNILOCK piston includes high-quality sealing 
elements and pins which ensure a
balanced movement of the slide wedges.

2 Body
UNILOCK Clamping chucks are manufactured in 
different versions, according to their application.  
Material: steel, hardened, corrosion-resistant.

5 Springs
Springs made out of fatigue strength quality steel 
ensure the preservation of clamping force without 
air pressure assistance.

3 Slide Wedges
Solid slide wedges are made out of high-tensile 
steel. They are hardened as well for a save locking 
function of the Clamping knob.


Operation medium air

UNILOCK chucks have two air connection possibilities. There is a threaded port one on the side and an o-ring sealed counterbored port on the bottom. For an essential increase of the pull-in force of a chuck, the system offers a turbo effect over a double acting cylinder. This effect increases the clamping force, depending on the air pressure that assists the force of the springs. During a turbo-lock operation, the piston bottom is supplemented with extra compressed air. Basically, all UNILOCK chucks have a turbo effect with a suitable installation.

At UNILOCK Automation chucks the sealed air from the supports are as well used as a system control function.

          Opening with compressed air                                          Clamping force increases when
                                                                                     TURBO is activated