The advantages of the Widia universal collet chuck include the ability to continue using standard ER collets while upgrading to precision collets, and thicker chuck walls and a stronger outer form that help deliver added rigidity and lower vibration.
The collet chuck (6-20 mm) is available with Safe-Lock pull-out protection from Haimer. Here, helical grooves are ground into the shank of the milling tool that mate with the chuck's pin drivers, preventing the tool from spinning or being pulled out of the holder under extreme machining conditions. The helical path of the Safe-Lock grooves also allows for tool length adjustment, meaning tools can be reground and pre-set as usual.
