Accupro 588250 ER40 Collet 0.497 Inches

Product Description

The ACCUPRO 588250 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other spindle-driven equipment that accept the ER40 collet standard. It holds workpieces or cutting tools with a maximum capacity of 0.497 inches and a minimum collet capacity of 0.469 inches, providing a secure clamping range suited to a variety of tool shank sizes. The collet is rated to 1000 psi clamping pressure, delivering consistent grip during high-speed cutting operations. Machinists and tool-and-die technicians install this collet as a direct component of the tool holding assembly.

This collet is suited for use in shops running ER40-compatible collet chucks on vertical or horizontal machining centers, lathes with live tooling, and manual milling machines. It is appropriate for production environments and job shops where precise tool runout and repeatable clamping force are required. The ER40 standard is widely adopted in both light-duty and heavy-duty cutting applications across general metalworking, mold making, and precision parts manufacturing.

Key Features

• ER40 collet series for broad compatibility with ER40-standard collet chucks
• 0.497 inch maximum collet capacity with 0.469 inch minimum capacity
• 1000 psi rated clamping pressure for secure tool holding during cutting operations
• Single-piece package quantity suitable for individual replacement or expanding a collet set
• Compact form factor weighing 0.85 pounds for easy handling and storage

Compatibility

Designed for use with ER40-standard collet chucks and compatible spindle tooling systems that accept the ER40 collet series.

Installation Notes

Installation is performed by machinists or tooling technicians familiar with collet chuck systems. Before installing or removing the collet, ensure the machine spindle is fully stopped and the machine is powered down or in an e-stop state. Use the appropriate ER40 collet nut and spanner wrench to seat and torque the collet chuck assembly according to the chuck manufacturer's specifications. Inspect the collet bore and chuck taper for chips or contamination before assembly to ensure proper seating and runout performance.