Tool clamping

Tool clamping

Flexible clamping system solutions for the entire range of spindle technology

A lot has happened since the development of the first gripper for a steep taper tool in 1980: Thousands of clamping systems delivered around the globe have made us a respected partner in the machine tool industry. Market and customer demands are constantly changing and our enthusiasm for thinking outside of the box and developing new ideas has been the engine of the steady re-development and further development of our products for tool clamping from the very start.

Therefore, we can offer a wide range of products, which continue to set standards for user friendliness, productivity and size and provide the best prerequisites for customised adaptation.

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Hohe Teileverfügbarkeit

High component availability

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Flexible Produktarchitektur

Flexible product architecture

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Schnelle Entwicklungszeiten

Short development times

Product groups

In addition to designing and producing grippers for all common interfaces, we specialise particularly in the development of modular clamping systems for gear-driven and motor-driven spindles. Our product portfolio also includes rotary unions for the transfer of coolant lubricant. Various testing and measuring units complete our range for tool clamping. Find out more about our four product groups here:

Product group grippers


Our gripper range convinces by its unique spectrum of available products. We design and produce grippers for all commercially available interfaces from steep taper and hollow taper shank to polygonal taper shank. All clamping equipment is designed to endure, completely maintenance-free and offers the greatest possible clamping force consistency.

In addition to the basic versions, a variety of options is also available, e. g.:

  • holding function for quick, stable tool change
  • compact design
  • with coolant transfer system
  • stainless steel version
  • short stroke version for compact spring stacks

Various pull studs for our steep taper grippers complete the range.

Product group complete clamping systems

Our tool clamping systems represent reliable performance, compact dimensions and a long service life. Using our tried-and-tested individual components guarantees the functionality and performance of the entire system.

Our scope of supply includes grippers, force-amplifying gear units, spring stacks and release cylinders as well as systems for medium transfer and position measurement. The result: (hydro)mechanical, hydraulic and electrical complete clamping units suitable for nearly every type of machining spindle.

The individual components are modified as required and adapted, for example, with regard to clamping force, installation space or speed range. This ensures that our customers get complete solutions tailor-made for their application.

Complete clamping systems
Complete clamping systems

Product group rotary unions

Rotary unions
Rotary unions

The function of our rotary unions is based on a permanently closed sealing gap that ensures reliable sealing between the rotating spindle and the stationary component. This special sealing system permits continuously reliable, practically leak-free tool cooling and tool lubrication.

Moreover, our products are characterised by their compact design and their large through holes for high coolant volumes. High-quality components and a temperature-optimised design permit use at high rotational speeds and long service lives.

Our standard range includes bearingless and bearing-mounted rotary unions. Our engineers will adapt these to your application-specific requirements.

Product group testing and measuring units

As a clamping system manufacturer, we consider precise measurement of clamping forces essential. In accordance with our quality philosophy, all clamps are tested 100 %. For this purpose, we developed our own range of measuring systems, which permit quick and uncomplicated measurement of the clamping force and clamping shoulder incline (for our force-amplifying SK and PSC grippers).

Our clamping shoulder and clamping force measuring equipment is practice-approved, highly precise equipment for testing and ensuring the clamping forces in machining spindles.

A special advantage of our clamping force measuring devices is the universal use for different interfaces by simply exchanging the measuring adapter.

Testing and measuring units
Testing and measuring units

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