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The most versatile and innovative chuck on the market. Available in manual & hydraulic.


InoFlex - Concentric and compensating 4-jaw chuck

The trend is towards combined turning and milling machines for both round, rectangular and geometrically irregular parts. In the past, companies have used rigid concentric 3-jaw chucks for clamping round parts and worked with vices (two jaws) for rectangular and geometrically irregular parts.

HWR has reacted to this development and produced the first universal clamping tool for clamping round, rectangular and also geometrically irregular parts. With the patent application dated January 2013 for the concentric and compensating 4-jaw chuck InoFlex, HWR is launching a clamping tool to perform this task in a range of Ø 160-1200 mm. No other clamping tool on the market can do this!

Type VD

Manual chuck withoutthrough-hole

Manual chuck withoutthrough-hole

Type VK

Power chuck without through-hole

Power chuck without through-hole

Type VT

Power chuck with    through-hole

Power chuck with

Type VL

Manual clamping without chuck (weight reduced)

Manual clamping without chuck (weight reduced)

To purchase, or for more information


InoFlex® offers you the following advantages:

4 Jaws For Compensating Clamping

  • For concentric and compensating clamping

  • For clamping of round, cubic and geometrically irregular parts

  • Suitable for deformation-sensitive workpieces

Low-Cost Allrounder

  • Can be used on all modern machine tools

  • Available as manual chuck Ø 160-1200 mm

  • Available as power chuck Ø 210-1000 mm

  • No expensive special clamping solutions needed

High Repeat And Roundness Accuracy

  • Precise production results confirmed in practice

InoFlex – for the concentric and compensating clamping of round, rectangular and geometrically irregularly shaped parts.


How it Works

In a conventional chuck, all drive parts move in the same direction around the centre (e.g. wedge bar, wedge hook, scroll) either towards or away from the centre.

The drive of the I no Flex® 4-jaw chuck (concentric compensation) moves towards or apart on two parallel axes. Compensation is provided by connecting the diametrically arranged slides with levers or a sliding gate-type gear.

Workpiece Examples