Parlec ER40-0375 ER40 Collet 0.375 Inch

Product Description

The PARLEC ER40-0375 is an ER40 series collet with a 0.375-inch (3/8 inch) bore capacity, designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accepts ER40 collet chucks. The collet measures 1.811 inches in overall length and has a minimum collet capacity of 0.336 inches, providing a usable clamping range suited to standard shank tooling. Machinists and tool-room technicians install this collet to securely hold cutting tools such as end mills, drills, and reamers during precision machining operations.

This collet is appropriate for production and job-shop environments where ER40 toolholding systems are in use. It suits both light and moderate material-removal applications across a range of machine platforms. The ER40 standard is widely adopted in CNC milling and turning centers, making this collet a common replacement or supplemental unit for shops maintaining ER40 collet sets.

Key Features

• ER40 collet series with 0.375-inch nominal bore for standard 3/8-inch shank tooling
• Overall length of 1.811 inches for consistent spindle projection
• Minimum collet capacity of 0.336 inches provides a defined clamping range
• Lightweight at 0.5 pounds for easy handling during tool changes
• Compatible with any ER40-standard collet chuck or toolholder

Compatibility

Designed as an OEM-style replacement or supplemental collet for use with ER40-standard collet chucks and toolholding systems.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Before inserting or removing the collet, ensure the machine spindle is fully stopped and the control is in an e-stop or locked-out state per applicable lockout/tagout procedures. Seat the collet into the ER40 chuck nut before threading onto the toolholder body, and use a calibrated torque wrench with the appropriate ER40 spanner to achieve proper clamping force per the toolholder manufacturer's specifications. Inspect the collet bore and seating surfaces for chips or wear before each use.