Accupro 784953 ER25 Collet 0.531 Inch

Product Description

The ACCUPRO 784953 is an ER25 series collet designed for precision tool holding in CNC machining, milling, and drilling applications. It accepts tooling with a collet size of 0.531 inches and a minimum collet capacity of 0.516 inches. The ER25 collet standard is one of the most widely used in the industry, offering reliable concentricity and consistent clamping force across a broad range of cutting tools. Machinists and tool room technicians install this collet into compatible ER25 collet chucks or tool holders to secure end mills, drills, reamers, and other round-shank tooling during machining operations.

This collet is suited for use in machine shops, job shops, and manufacturing environments running vertical or horizontal machining centers, milling machines, or drill presses equipped with ER25-compatible spindle tooling. It is appropriate for both production runs and toolroom setups where accurate tool holding and minimal runout are required. Sold individually, it is a direct replacement or spare for any ER25 collet chuck system requiring the 0.531-inch size.

Key Features

• ER25 collet series for compatibility with standard ER25 collet chucks and tool holders
• Collet size of 0.531 inches accommodates matching round-shank tooling
• Minimum collet capacity of 0.516 inches provides a defined clamping range
• Compact profile: 1.9 inches in height, 1.2 inches in width, and 1.2 inches in length
• Lightweight at 0.1 pounds for easy handling and minimal spindle load impact

Compatibility

Designed as an OEM-style replacement for use in any ER25-standard collet chuck or tool holder system requiring a 0.531-inch collet capacity.

Installation Notes

Installation should be performed by a qualified machinist or tool room technician familiar with ER collet systems. Power down and lock out the machine spindle before removing or installing any collet. Seat the collet fully into the nut before threading onto the chuck body to prevent damage to the collet or holder. Inspect the collet and chuck bore for debris or damage before use.