WNT’s pneumatic zero point clamps offer process security

WNT has extended and developed its pneumatic zero point clamping system.

The system offers process security thanks to its precise, short taper centring and self-locking mechanism. This guarantees repeatability of <0.005 mm, says WNT.

The clamping slides are first closed by spring force, locking the clamping bolt via 15° angled surfaces, before the pneumatic power function supplies the piston surfaces with compressed air to increase the clamping force by up to 300%. According to WNT, as a result of this 25 kN clamping force, it is possible to utilise higher cutting data.

Once the mechanical locking system engages via the spring assembly, it is self-locking and form-fitting, meaning a compressed air supply is not required during machining. To release the clamping pressure, compressed air applied at a maximum pressure of 6 bar is sufficient to open the clamping modules.

The base plates, clamping bolts and clamping slides are made from hardened stainless steel.