The Leader MultiChuck MMY concentric clamping system, the winner of Best Workholding Product at the International Machine Tool Industry Awards 2000, brings a host of advantages to the   self-centring of round parts on vertical and horizontal machining centres, milling machines and grinders - not least rapid clamping and short set-up times.

This is courtesy of a simple top face operation that enables more chucks, and therefore workpieces, to be ''banked'' closely together - which is not the case with the traditional side face lock/unlock strategy.

Available with two or three jaws, MultiChuck MMY combines fast initial jaw travel with controlled second-stage clamping to provide a large jaw opening with high gripping force.

Jaw strokes are 4, 5, 8 and 10mm across the four variants, and the low height (from 25 to 40mm across the range) maximises the machine's Z axis (height can be increased using blocks). Quick change top jaws can be supplied to suit most materials/components.

MultiChuck MMY can be provided as standard in a range of chuck sizes - 80, 100, 125 and 150mm - and with base dimensions of 80 x 80mm, 100 x 100mm, 125 x 125mm and 150 x 150mm. It will fit all slotted machine tables.

MultiChuck MMY is available for external and internal clamping and will satisfy both first and second operations in the same machining cycle - thereby providing continuous output of finished components.