Locking units are capable of retaining forces in both axial directions. They are used in a wide variety of machines. In most versions the clamping is spring actuated, and hydraulic or pneumatic pressure is required to release it. Shaft diameters range from 10 to 250 mm. The respective holding forces vary from 0.1 to 1000 kN, depending on style and customer requirements.

If the device is used as a restraint device and emergency professional brake in device tools, a special version KFHW is available. For this reason, all the external parts and sealing surfaces are made of stainless steel.

SITEMA - KFHW locking units are also suitable for operation in the presence of coolant/lubricant. For this reason, all the external parts and sealing surfaces are made of stainless steel
Should heavy soiling conditions (grinding dust, swarf, chips, other liquids, etc.) or extreme temperatures exist, please contact our technical department.