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The PARLEC ER20-S012 is a 12-piece collet set in the ER20 series, designed for use in ER20-compatible toolholders on CNC machining centers, milling machines, and other rotating spindle equipment. The set covers a clamping range from 1mm to 13mm in 1mm increments, giving machinists and tool room technicians a complete spread of sizes for the ER20 system in a single purchase. At approximately 1 pound, the set is compact and easy to store. PARLEC manufactures these collets to ER system standards, making them a reliable choice for production and job shop environments where runout and clamping consistency matter.
This collet set is suited for use in machine shops, tool cribs, and manufacturing facilities running ER20 toolholding systems. The 1mm size increments make the set practical for shops working with a wide variety of tooling diameters, including end mills, drills, reamers, and taps within the ER20 clamping range. The set is appropriate for both setup and production use and is commonly installed by machinists, CNC operators, and tool room personnel in light to medium-duty cutting applications.
Designed for use with ER20-series collet chucks and toolholders that accept the ER20 collet system with a clamping range of 1mm to 13mm.
ER collets are installed by machinists or CNC operators using the appropriate ER20 collet nut and a calibrated torque wrench or spanner set rated for the toolholder. Always power down and lock out the machine spindle before changing collets. Inspect each collet for wear, scoring, or out-of-round condition before use, and replace any collet that shows visible damage to maintain runout tolerances.
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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