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The PARLEC EROS16-SI008 is an 8-piece ER collet set built around the ERos16 collet system, designed for use in CNC machining centers, milling machines, and other rotating spindle applications. The set covers a clamping range of 0.125 inches to 0.375 inches, making it well suited for a broad range of end mills, drills, and other round-shank tooling. Total indicator runout (TIR) is rated at 0.000080 inches (0.0020 mm), supporting precision work where concentricity directly affects surface finish and tool life. This set is appropriate for machinists and toolroom professionals working in production or job-shop environments.
The ERos16-SI008 collet set is intended for use in ERos16-compatible toolholders in precision machining applications. The eight-piece configuration provides coverage across the full capacity range of the series without requiring individual collet sourcing. Typical installations include vertical and horizontal milling setups where quick tooling changes and repeatable runout performance are required. This set suits both production floors and tool cribs maintaining a core inventory of ER collets.
Designed for use with ERos16-series compatible toolholders that accept the ER coolant collet system.
Installation is performed by qualified machinists or toolroom technicians. Before changing collets, ensure the spindle is fully stopped and the machine is in a safe, locked-out state per applicable shop safety procedures. Collets should be seated properly in the toolholder nut before tightening, and the appropriate ER torque wrench is recommended to achieve consistent clamping force without overloading the collet or nut. Inspect collets periodically for wear, nicks, or distortion that could affect runout performance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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