Parlec 5UMER40-0500 ER40 Collet 0.5 Inch

Product Description

The PARLEC 5UMER40-0500 is an ER40 series collet sized at 0.5 inches, designed for use in ER40-compatible collet chucks on CNC machining centers, milling machines, and drilling equipment. It holds workpieces and cutting tools with a minimum collet capacity of 0.451 inches and delivers a total indicator runout (TIR) of 0.0002 inches, supporting tight-tolerance machining operations. The overall length is 1.811 inches. Machinists, tool-and-die professionals, and CNC operators rely on this collet for consistent, repeatable clamping across high-cycle production and precision job-shop work.

This collet is suited for use in vertical and horizontal machining centers, CNC mills, and drill presses equipped with ER40 collet chucks. The 0.5-inch nominal size accommodates standard half-inch shank cutting tools including end mills, drills, reamers, and taps. It is appropriate for both production and prototype environments where dimensional accuracy and tool concentricity are critical to part quality.

Key Features

• ER40 series collet with 0.5 inch nominal bore size
• TIR of 0.0002 inches for precision tool holding
• Minimum collet capacity of 0.451 inches accommodates near-nominal shank diameters
• Overall length of 1.811 inches fits standard ER40 chuck pockets
• Overall diameter of 1.614 inches conforms to ER40 collet body geometry

Compatibility

Designed for use with ER40-compatible collet chucks. Fits any machine spindle or toolholder configured for the ER40 collet standard.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the collet. Seat the collet fully into the ER40 nut before threading the nut onto the chuck body, and torque the nut using an appropriate ER collet wrench to manufacturer-specified values for the chuck. Inspect the collet bore and seating surfaces for chips or debris before each use to maintain TIR performance.