Accupro 587473 ER20 Collet 2.00mm 0.078 Inch

Product Description

The ACCUPRO 587473 is an ER20 series collet designed for precision toolholding in CNC machining, milling, and routing applications. It accepts a nominal collet size of 2.00mm (0.078 inches) with a minimum collet capacity of 0.039 inches (1.0mm), allowing it to grip smaller-shank tooling within its clamping range. The collet maintains a Total Indicator Runout (TIR) of 0.01mm, making it suitable for applications where concentricity and repeatability are critical. Machinists and tool room technicians install this collet into an ER20-compatible collet chuck or toolholder as part of a standard workholding setup on CNC or manual spindle equipment.

This collet fits standard ER20 collet chucks used across a wide range of benchtop and production CNC mills, routers, and engraving machines. The ER20 series is one of the most commonly used collet standards in light-to-medium duty machining environments, including job shops, production cells, and toolroom operations. It is appropriate for holding end mills, drills, reamers, and other round-shank cutting tools within the stated capacity range.

Key Features

• ER20 series collet with 2.00mm nominal collet size
• 0.01mm TIR for consistent concentricity and reduced runout
• Minimum collet capacity of 0.039 inches (1.0mm) to accommodate smaller shanks
• Compatible with standard ER20 collet chucks and toolholders
• Precision-ground construction for repeatable toolholding in production and toolroom use

Compatibility

Designed as a standard ER20 series collet for use with any ER20-compatible collet chuck or toolholder. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation requires a properly rated ER20 collet chuck and the appropriate collet nut and spanner wrench. The spindle or toolholder assembly should be fully de-energized and at rest before inserting or removing collets. Do not exceed the stated clamping range; using a collet outside its listed capacity can result in inadequate grip and tool pullout. Follow machine tool manufacturer torque guidelines for collet nut tightening.