High Speed Pre-Balanced
Internal clamping ring's shape is design to minimize out-of-balance compare to the standard off-center o-ring design from other standard ER collet nut, achieving 12,000 RPM without needed to drill holes on the collet nut body when place on a dynamic balanced machine to preserve ER collet nut's body strength.
Internal ball bearing tapered raceway eliminates twisting where the collet and nut makes contact, resulting in a smooth and stable collapse of the collet around the cutting tool thus improving overall runout and clamping force
Ball bearing is made from Taiwan and the collet nut is balanced to 12,000 RPM
Made from alloy steel hardened to 55-56 HRC
Internal thread and taper are precision ground
Compatible with most standard ER tool holder and ER collets regardless of the brand