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The PARLEC EROS20-8MM is an ER20 series collet sized for 8mm tool shank capacity. ER collets are precision workholding components used in collet chucks on milling machines, machining centers, and CNC lathes. This collet clamps cutting tools or workpiece shanks with consistent radial force, maintaining concentricity through the cut. It fits any standard ER20-compatible chuck body. Machinists and tool-room technicians install ER collets as part of routine tooling setup and changeout. At 0.1 pounds, the collet is lightweight and easy to handle during tool changes.
The EROS20-8MM is suited for light-duty to general-purpose milling, drilling, and reaming operations where an 8mm shank tool is required. It fits CNC machining centers and manual knee mills equipped with ER20 collet chucks. The ER20 series is widely used in production and job-shop environments where fast, repeatable tool changes are a priority. This collet is appropriate for shops running metric tooling in standard ER20 chuck bodies.
Designed for use with ER20-compatible collet chucks accepting an 8mm collet capacity.
ER collets are installed by a machinist or toolroom technician. Before changing collets, power down the spindle and confirm the machine is in a safe, locked-out state per shop safety procedures. Seat the collet into the nut before threading onto the chuck body, and tighten using the appropriate ER collet wrench to the chuck manufacturer's specified procedure. Do not use impact tools on collet nuts.
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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