Parlec 5UMER25-SI011 ER25 Collet Set 11 Piece

Product Description

The PARLEC 5UMER25-SI011 is an 11-piece ER25 collet set covering a clamping range from 0.125 inches through 0.625 inches. Each collet in the set holds a Total Indicator Runout (TIR) of 0.0002 inches, making this set appropriate for precision milling, drilling, reaming, and tapping operations. The ER25 collet system is one of the most widely used toolholding standards in machining, and this set provides coverage across the most common inch fractional sizes in that range. Machinists and CNC setup technicians working in job shops, production facilities, or tool rooms will find this set a practical starting inventory for ER25-compatible chucks.

This set is suited for use in machining centers, CNC mills, and manual milling machines equipped with ER25 collet chucks. The included collets span eleven discrete sizes across the 0.125 to 0.625 inch range, covering fractional inch tooling from 1/8 inch through 5/8 inch. Typical applications include holding end mills, drills, reamers, and taps in light to medium cutting operations where consistent runout control is required.

Key Features

• 11-piece set covering 0.125 to 0.625 inches in the ER25 collet series
• TIR of 0.0002 inches for precision toolholding consistency
• ER25 system compatibility with a wide range of commercially available collet chucks
• Fractional inch sizes included: 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 7/16, 15/32, 1/2, 9/16, 5/8
• Single set provides common-size coverage for general machining toolroom use

Compatibility

Designed for use with ER25-series collet chucks conforming to the ER collet system standard. Consult your chuck manufacturer specifications to confirm ER25 collet compatibility before installation.

Installation Notes

Installation and removal of ER collets requires appropriate ER25 collet nuts and a torque wrench or spanner set rated for the collet chuck in use. Always ensure the spindle or chuck is fully stopped and locked out before changing collets. Inspect each collet bore and seating taper for chips or damage before seating tooling. Follow the machine tool manufacturer guidelines for proper collet nut torque and tool projection limits.