Accupro 784947 ER25 Collet 0.5 Inch

Product Description

The ACCUPRO 784947 is an ER25 series collet designed for use in CNC machining centers, milling machines, and toolholding systems that accept the ER25 collet standard. This collet accepts tool shanks up to 0.5 inches (nominal 1/2 inch) with a minimum collet capacity of 0.469 inches, providing a secure, concentric grip on end mills, drills, reamers, and similar round-shank cutting tools. Weighing approximately 0.1 pounds, it is a compact, precision-ground toolholding component used by machinists and tool crib technicians in production and job shop environments.

This collet is suited for light to medium material removal operations where accurate tool runout and repeatable tool setting are required. It fits standard ER25 collet chucks and toolholders found on vertical and horizontal machining centers as well as manual knee mills equipped with ER25-compatible spindle adapters. A single collet is included per package, making it straightforward to stock and replace as part of routine tooling maintenance.

Key Features

• ER25 collet series for broad compatibility with ER25 toolholders and chucks
• 0.5 inch nominal collet size with 0.469 inch minimum collet capacity
• Lightweight at 0.1 pounds for easy handling during tool changes
• Sold individually, allowing single-unit replacement without purchasing a set
• Precision-ground design supports consistent tool runout for accurate machining

Compatibility

Designed as a standard ER25 series collet compatible with ER25 collet chucks and toolholding systems that conform to the ER25 collet standard.

Installation Notes

Installation is performed by machinists or tool crib personnel during toolholder setup or tool change procedures. Before installing or removing a collet, ensure the machine spindle is fully stopped and the machine is powered down or placed in an appropriate safe state per shop lockout/tagout procedures. Use the correct ER25 collet nut and a calibrated torque wrench or spanner set rated for ER25 toolholders to achieve proper clamping force. Do not overtighten the collet nut or use impact tools, as this can damage the collet taper and reduce clamping accuracy.