Parlec ER25-S016 ER25 Collet Set 15 Pc 3/16 to 5/8 in

Product Description

The PARLEC ER25-S016 is a 15-piece ER25 collet set designed for use with ER-series collet chucks in CNC machining and manual milling applications. The set covers a clamping range of 3/16 inch (0.1875 inches) to 5/8 inch (0.6250 inches) in 1/32-inch increments, providing continuous coverage across common tool shank sizes. Machinists and tool-room technicians rely on ER25 collets for their consistent runout performance, strong clamping force, and broad compatibility with standard spindle toolholders. This set is a practical all-in-one solution for shops that need to cover the full ER25 capacity range without sourcing individual collets.

ER25 collet sets are used in production machining, job shops, and tool rooms running CNC machining centers, CNC lathes with live tooling, manual mills, and drilling operations. The ER25 series is one of the most widely adopted collet standards in the industry, making this set suitable for both high-volume production environments and general-purpose machine shop work. The 15-piece configuration spanning 3/16 to 5/8 inch handles the majority of end mill, drill, and reamer shank sizes encountered in everyday machining operations.

Key Features

• 15-piece set covers 3/16 inch to 5/8 inch clamping capacity in 1/32-inch increments
• ER25 series collets compatible with standard ER25 collet chucks and toolholders
• Continuous size progression eliminates gaps in toolholder coverage
• Compact collet profile suits a wide range of CNC and manual spindle applications
• Set weight of 2 pounds makes for easy transport and storage as a complete unit

Compatibility

Designed for use with ER25-series collet chucks and toolholders conforming to the ER collet system standard. Fits any spindle or holder manufactured to the ER25 collet specification.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before changing collets, confirm the machine spindle is stopped and all motion has ceased. Seat the collet fully into the nut before threading onto the chuck body to prevent collet damage. Tighten the collet nut with the appropriate ER25 spanner wrench to achieve proper clamping force - do not use substitutes that could damage the nut flats or affect runout.