Parlec ERS40-0984 ER40 Collet 25 Mm

Product Description

The PARLEC ERS40-0984 is an ER40 series collet designed for use in ER40 collet chucks on CNC machining centers, lathes, and manual milling machines. It accepts a 25 mm shank tool and provides a secure, concentric grip for drilling, reaming, and milling operations. The collet measures 1.811 inches overall length with a 1.614-inch overall diameter and is engineered to deliver consistent clamping force at up to 1800 psi clamping pressure. Machinists and tool-room technicians rely on this style of collet for repeatable tool holding in high-cycle production environments.

This collet is suited for use in any standard ER40 collet chuck, making it a common replacement or additional-capacity item in CNC shops, job shops, and toolrooms running 25 mm tooling. It fits both vertical and horizontal machining center spindles as well as lathe collet chuck adapters that accept the ER40 series. Installation requires a compatible ER40 nut and chuck body.

Key Features

• ER40 collet series for use with standard ER40 chucks and nuts
• 25 mm collet size for secure clamping of 25 mm shank tooling
• 1.811-inch overall length for proper seating in ER40 chuck bodies
• 1800 psi clamping pressure rating for reliable tool retention
• 1.614-inch overall diameter consistent with ER40 series geometry

Compatibility

Designed as an OEM-style replacement or production-use collet for any standard ER40 collet chuck system accepting 25 mm tooling.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Always ensure the spindle or chuck is fully stopped and the machine is powered down before changing collets. Seat the collet fully into the ER40 nut before threading the assembly onto the chuck body, and torque the nut with a proper ER spanner wrench to the chuck manufacturer specification. Inspect the collet bore and seating taper for chips or debris before each use to maintain runout accuracy.