Accupro 587382 ER20 Collet Set 12 Piece

Product Description

The ACCUPRO 587382 is a 12-piece ER20 collet set designed for use in CNC machining centers, milling machines, and other spindle tooling applications that accept the ER20 collet system. The set covers a metric size range from 2.00 mm through 13.00 mm, with a decimal inch capacity spanning 0.039 to 0.511 inches, giving machinists a full working range in a single kit. Each collet is rated to a total indicator runout (TIR) of 0.01 mm, supporting precision work where concentricity is critical. The set is suited for shops running production or maintenance tooling that requires repeatable, low-runout tool holding.

This collet set is intended for use in machine shop environments where ER20-compatible toolholders are in service. Typical applications include vertical and horizontal milling, drilling, and light boring operations in both job shop and production settings. The 12-piece configuration covers the full standard metric collet range for the ER20 series, making it a practical all-in-one solution for technicians and machinists who need to cover multiple tool shank diameters without purchasing individual collets. The set weighs 1 pound and stores compactly in a tooling drawer or cabinet.

Key Features

• 12-piece set covers the full ER20 metric collet range from 2.00 mm to 13.00 mm
• ER20 collet system compatibility for wide toolholder availability
• 0.01 mm TIR rating supports precision and concentricity-sensitive operations
• Decimal inch capacity range of 0.039 to 0.511 inches
• Compact, lightweight set at 1 pound for easy storage and transport

Compatibility

Designed as an OEM-style replacement and standard fitment set for machine spindles and toolholders built to the ER20 collet system specification.

Installation Notes

ER20 collets are installed and removed by a qualified machinist or tooling technician using the appropriate ER20 collet nut and spanner wrench. Ensure the spindle is fully powered down and at a complete stop before changing collets. Inspect collet bores and seating surfaces for chips or debris before installation, as contamination directly affects TIR. Torque the collet nut according to the toolholder manufacturer specifications.