Accupro 784961 ER25 Collet 0.219 Inch Capacity

Product Description

The ACCUPRO 784961 is an ER25 series collet designed for use in ER25-compatible collet chucks on CNC machining centers, mills, and lathes. It accepts a maximum workpiece or tool shank diameter of 0.219 inches, with a minimum collet capacity of 0.188 inches, giving it a clamping range suited for standard end mills, drills, and other round-shank cutting tools. The collet measures approximately 1.9 inches in height and 1.2 inches in diameter and weighs 0.1 pounds. It is installed and replaced by machinists and toolroom technicians as part of routine toolholding setup and maintenance.

This collet is used in shop environments where ER25 toolholding systems are standard equipment. Typical applications include precision milling, drilling, tapping, and reaming operations on CNC and manual machine tools equipped with ER25 collet chucks. The 0.219-inch capacity makes it a common choice for holding fractional and metric cutting tools within its clamping range. It is sold individually and is suitable for both production and job-shop use.

Key Features

• ER25 collet series for use with ER25-compatible collet chucks
• Maximum capacity of 0.219 inches with a minimum capacity of 0.188 inches
• Compact profile: 1.9 inches height, 1.2 inches diameter
• Lightweight at 0.1 pounds for minimal spindle imbalance
• Sold individually with a minimum order quantity of 1

Compatibility

Designed as a standard ER25 collet for use with any ER25-compatible collet chuck or toolholder. No specific machine brand or model compatibility was provided in the product data.

Installation Notes

ER25 collets are installed by machinists and toolroom personnel using an ER25 collet chuck and the appropriate spanner nut wrench. Always ensure the spindle is fully stopped and the machine is powered down or in a safe lockout state before changing collets. Do not exceed the collet clamping range; using a tool shank outside the rated capacity range can cause runout, tool pullout, or collet damage. Inspect the collet seating surface and chuck bore for chips or wear before installation.