Accupro ER40HP 15.87 ER40 Collet 5/8 Inch

Product Description

The ACCUPRO ER40HP 15.87 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle toolholding applications. It accepts a 5/8 inch shank diameter and delivers a total indicator runout (TIR) of 0.0002 inch (0.0050 mm), making it suitable for precision work where tool concentricity directly affects surface finish and dimensional accuracy. The collet has an overall length of 46.0 mm. Machinists and CNC setup technicians install this collet as part of an ER40 collet chuck system.

This collet fits into any standard ER40 collet chuck and is used in shops performing milling, drilling, reaming, and light tapping operations on ferrous and non-ferrous materials. It is a common toolholding component in both job shop environments and production machining cells where consistent tool grip and runout control are required across multiple setups.

Key Features

• ER40 collet series for use with any compatible ER40 chuck body
• 5/8 inch bore diameter for direct shank engagement
• TIR of 0.0002 inch (0.0050 mm) for precise tool concentricity
• Overall length of 46.0 mm for standard ER40 chuck fit
• Single-piece collet construction for consistent clamping force

Compatibility

Designed as an OEM-style replacement or spare collet for use with standard ER40 collet chuck bodies accepting a 5/8 inch bore collet.

Installation Notes

Installation is performed by a machinist or CNC toolroom technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before changing collets. Clean the collet taper and chuck bore before seating to prevent runout caused by chips or debris. Do not exceed the chuck manufacturer's recommended torque specification when tightening the collet nut.