Achieving clamping forces up to 40 KN by hand is almost impossible, therefore lever or expensive special tools need to be used. These are often procured only for individual cases, at great expense.

A cheaper and multiple usable solution for such cases serves the workholding specialist ENEMAC from Kleinwallstadt, GERMANY.

The power clamping nuts of series ESBS and ESBT with its integrated planetary gear can be driven by a handle easily and without great effort. By turning the handle, the internal thread is slightly drawn in, thus the counterpart is tightened. The principle is simple, the effect is very great, because by this concept, a force of about 4 t can easily be manually exercised by all workers, without any tools.

After screwing the nut on the existing bolt by hand, turn the top-mounted handle clockwise until the workpiece is clamped. The nuts are equipped with a locking mechanism and tighten securely and quickly each workpiece or tool.

The types ESBS and ESBT are intended for consistently large workpieces or tools. Further series with through hole threads are available, for clamping components with varying heights. Both types are available as standard for thread sizes from M10 to M20, on request also with special threads.

For power clamping nuts that are exposed to extreme heat, a specially sealed high-temperature version is available, for example for foundries or in the production of ceramics.

The power clamping nuts can be used at any time, whether for the original equipment or as a retrofit item.