SHOWA SKM TOOL SYSTEM

TOOL HOLDERS FOR MULTI-TASKING MACHINE
SKM's hollow shank is deliberately thin and flexible, so it expands more than the socket of spindle and tightens when rotating at high speed. As the drawbar retracts, it expands the collet and pulls the shank back into the socket, compressing the shank until the flange seats against the front of the socket. This provides a stiff, repeatable connection more than BT shank.