Universal collet chuck holds 0.0001-in. runout

Widia has introduced a universal, high-precision collet chuck for use in such operations as milling, drilling, reaming, and tapping. It maintains a runout accuracy of 0.0001 in. at 3xD.

The chuck allows the continued use of standard ER collets while upgrading to precision collets. Thick chuck walls and a strong outer form add rigidity and lower vibration for increased spindle and tool life.

The collet is available with Safe-Lock™ pull-out protection from Haimer. Helical grooves are ground into the shank of the milling tool that, together with the respective pin drivers in the chuck, prevent the tool from spinning or being pulled out of the holder altogether under extreme machining conditions. The helical path of the grooves also allows for adjusting tool length, so that tools can be ground and preset as usual.