Precision Replacement Collet Nut for ER32, ER40, RDO35 / SYOZ 25 Style Tool Holders

Static collet nuts (left in photo) and ball bearing collet nuts (right in photo) are available from stock and come in a version either with closed slots or open slots. When ordering, specify which style is needed because the closed and open slot versions do not use the same wrench style for tightening. A bearing nut, which incorporates a ball bearing ring in its base, provides higher clamping force. Another advantage of the bearing nut is that clockwise and counterclockwise tools can be used in the same tool holder.

Always torque collet nuts to correct torque based on collet style using a professional torque wrench.  Failure to tighten the collet nut to correct torque can result in tool vibration, breakage from overtorquing, and tool slippage.