Parlec ERS25-0375 ER25 Collet 3/8 Inch

Product Description

The PARLEC ERS25-0375 is an ER25 series collet designed to hold round workpieces and cutting tools with a 0.375 inch (3/8 inch) bore diameter. It measures 1.338 inches in overall length and 1.023 inches in overall diameter. ER-style collets deliver consistent clamping force across the full gripping range, making them a reliable choice for CNC milling, drilling, and tapping operations. This collet is installed by machinists and tool crib technicians working with ER25-compatible collet chucks and tool holders on machining centers and lathes.

The ERS25-0375 fits ER25 collet chucks used in general-purpose machining environments. It is suited for high-speed production applications where secure, repeatable tool holding is required. The 3/8 inch bore accommodates end mills, drills, reamers, and taps of that shank diameter. Typical installations include vertical and horizontal machining centers, CNC lathes with live tooling, and manual milling setups requiring a standardized tooling interface.

Key Features

• ER25 collet series for use with ER25-compatible chucks and holders
• 0.375 inch (3/8 inch) bore diameter for standard shank tooling
• 1.338 inch overall length for compact tool assemblies
• 1.023 inch overall diameter consistent with ER25 collet geometry
• Clamping pressure rating of 1800 for positive tool grip

Compatibility

Designed as a direct-fit replacement for ER25 collet chucks and tool holders accepting 3/8 inch bore collets in standard ER25 tooling systems.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Before changing collets, confirm the spindle is fully stopped and the machine is in a safe, locked-out state per applicable machine tool safety procedures. Use the correct ER25 collet wrench and chuck nut to seat and torque the assembly according to the chuck manufacturer guidelines. Inspect the collet bore and chuck taper for chips or damage before assembly to ensure proper runout and clamping performance.