Roemheld has introduced pneumatically actuated swing clamps incorporating a mechanical locking action, whereby the full holding force – between 200 and 600 N – is maintained in the case of air-pressure reduction or loss, ensuring operator safety and avoiding the production of scrap. Operating pressure is between 2 and 6 bar.

The clamp is a pull-type cylinder with a piston that is automatically locked when the workpiece height is within the designated clamping range, after which the air line can be depressurised or uncoupled, for example during pallet change. For unclamping, which is monitored, only the minimum pneumatic pressure is needed.
A feature of the clamps is a pair of flow control valves that can be easily adjusted from above. The valves allow the speed of the sturdy swing mechanism to be reduced if the flow rate is too high or when the clamping arms are of larger mass. This functionality also enables synchronisation or sequencing of the closure of several connected clamps. The swing angle is normally 90° clockwise or counter-clockwise, although it can be 60°, 45° or absent (0°).
If machining dry or with MQL, the ingress of small particles can be prevented by the use of an additional wiper ring.
For further information www.roemheld.co.uk