Accupro 588258 ER40 Collet 0.747 Inch Capacity

Product Description

The ACCUPRO 588258 is an ER40 series collet designed for use in CNC machining centers, milling machines, lathes, and other rotating spindle equipment that accept ER40 toolholding systems. This collet accommodates a decimal inch size of 0.747 inches, with a minimum collet capacity of 0.719 inches, making it suitable for gripping round shank tools and workpieces within that range. Rated to 1000 psi clamping pressure, it is built for secure, repeatable tool retention during metal cutting, drilling, reaming, and tapping operations. Machinists and CNC operators install this collet as part of a standard ER40 chuck and collet setup.

The ACCUPRO 588258 is used in both manual and CNC machining environments wherever an ER40-compatible chuck is mounted. Typical applications include milling machine spindles, lathe collet chucks, and high-speed machining center toolholders requiring precise, concentric tool grip. It is well suited for production shops, toolrooms, and job shops running round-shank cutting tools in the 0.719 to 0.747 inch diameter range.

Key Features

• ER40 collet series for use with standard ER40 chucks and collet nuts
• 0.747 inch decimal inch collet size with a minimum capacity of 0.719 inches
• 1000 psi clamping pressure rating for secure tool retention
• Single-piece collet construction for consistent concentricity
• Package quantity of 1 collet per unit

Compatibility

Designed as an OEM-style replacement or standard tooling addition for any machining setup using an ER40 collet chuck system.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Before installing or removing the collet, ensure the machine spindle is fully stopped and locked out per OSHA and shop lockout/tagout procedures. The collet seats into a compatible ER40 chuck body and is secured with a standard ER40 collet nut torqued to the chuck manufacturer's specification. Inspect the collet bore and chuck taper for chips or debris before assembly to maintain runout accuracy.