Quick-change centring vice by Hoffmann Group

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The Garant Xtric centring vice by Hoffmann Group is equipped with a new chuck jaw quick-change system, which enables easy, tool-free changeover. A click mechanism gives the vice an interchange accuracy in the micrometre range.

Top jaws, which can be rotated by 180°, allow for a large clamping range and high variability when fixing components. In addition, clamping using multiple Garant Xtrics is not a problem as the centre can be adjusted precisely in order to achieve top precision.
The top jaws can be replaced or rotated by 180° by hand, without using any tools. For this purpose, the top jaws are inserted into a dovetail and pushed down via two spring plates until they engage. There is no need to remove and re-thread the spindle nut. With this special ‘click and clamp’ system, the Garant Xtric can significantly contribute to a reduction in set-up costs.

With its rotating top jaws, the solution provides a particularly large clamping range of 0 to 144mm in the case of the model 80S, and 0 to 194mm in the case of the model 80M. An additional model with a jaw width of 125mm is to be launched. All models are alternatively available with pivot jaws.

If a clamping force of 25kN is applied directly on the component, the vice will also be suitable for clamping unfinished parts. If a gripper jaw with Garant tooth form is used, pre-stamping can even be eliminated. For customers that already use the Lang system, there are suitable top jaws with Lang system tooth form. The top jaws are available both uncoated and coated.

In order to clamp larger workpieces using multiple centring vices, the centre can be adjusted precisely – to the micrometre. And if required, can be shifted by up to 0.5mm on each side (by one millimetre in total). To do this, simply release the screw on the side, reset the centre using pin wrenches and then retighten the screw on the side.
Longitudinal grooves for precise alignment on the machine table, bores for the Lang positioning system and adapter plates for clamping on the Garant Zero Clamp zero-point system round off the range. Adaptation to other zero-point clamping systems is also possible.

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