Roemheld redesigns sturdy and safe arch clamps for presses

Laubach, Germany – ROEMHELD has improved its tried and tested arch clamps. The extremely sturdy, double-acting hydraulic component is used to clamp dies with straight clamping edges. As experts in clamping technology, ROEMHELD has now simplified and accelerated production processes while maintaining the same superior quality. Customers will also benefit from a slightly lower price.
The clamping element is suitable for dirty, hot environments on press beds and rams in sheet metal forming, die casting, rubber and forging applications. A special, long-lasting corrosion-resistant coating ensures excellent sliding properties. As a result, the bolt releases effortlessly even under the most demanding use.

The component is named after the arch-shaped clamping bolt, which clamps the die when it is placed on the straight clamping edge. During this movement, the horizontally acting force is deflected and hits the clamping surface almost vertically.

The arch clamp is available in seven different versions. They are each available in versions with or without position monitoring for particularly high process reliability. This informs the operator as to whether the bolt clamps or unclamps the die and whether the clamping position is overrun. Models with position control are available for temperatures up to 100° C. Without this option, the upper limit is 250° C.

For special applications, it is also possible to use position monitoring with sequence valve control up to 250° C.

An integrated mechanical locking bolt holds the upper die reliably, even in the event of a pressure loss, so that it cannot fall. The clamping and unclamping pressures are 200 bar in each case, the clamping force varies between 30 and 450 kN depending on the model, and the maximum permissible process force is 620 kN.