Parlec ER25-0375 ER25 Collet 3/8 Inch

Product Description

The PARLEC ER25-0375 is an ER25 series collet designed for use in ER25-compatible toolholders on CNC machining centers, milling machines, and other rotating spindle equipment. It accepts workpieces and cutting tools with a nominal diameter of 0.375 inches (3/8 inch) and a minimum collet capacity of 0.336 inches, providing a secure gripping range suited to standard round-shank tooling. The overall length measures 1.338 inches, and the unit weighs 0.2 pounds. Installation and removal are performed by machinists and toolroom technicians using an appropriate ER25 collet nut and spanner wrench.

This collet is intended for precision metalworking and machining applications where controlled clamping force and concentricity are required. It fits any ER25-standard collet chuck or toolholder conforming to the ER25 bore specification. Typical use cases include end mill holding, drill chucking, reaming, and tapping operations on both vertical and horizontal machining centers in job shop and production environments.

Key Features

• ER25 series collet - fits any ER25-standard toolholder
• 0.375 inch (3/8 inch) nominal collet size with 0.336 inch minimum capacity
• 1.338 inch overall length for compact toolholder projection
• Lightweight at 0.2 pounds for easy handling during tool changes
• Suitable for end mills, drills, reamers, and taps with matching shank diameters

Compatibility

Designed as a direct-fit replacement or new installation collet for ER25-standard collet chucks and toolholders accepting the ER25 bore specification.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle or toolholder is fully de-energized and the machine is in a safe lockout state before changing collets. Use the correct ER25 collet nut and a calibrated spanner wrench to seat and torque the collet properly. Inspect the collet bore and toolholder taper for chips or debris before assembly to maintain concentricity and prevent premature wear.