Accupro 784951 ER25 Collet 0.406 Inch

Product Description

The ACCUPRO 784951 is an ER25 series collet designed for use in CNC machining centers, milling machines, and toolholding systems that accept the ER25 collet standard. With a collet size of 0.406 inches (13/32 inch), this collet grips round shank cutting tools and provides concentric, repeatable clamping force when seated in a compatible ER25 chuck body. Machinists and CNC operators install ER collets as part of routine toolchanges and setup operations. The part weighs 0.1 pounds and fits within a compact envelope suited to high-speed spindle applications.

This collet is used in metalworking and general machining environments where the ER25 collet system is the specified toolholding standard. Typical applications include end mill holding, drill chucking, and reamer retention in both vertical and horizontal machining centers. It is sized for 0.406-inch (13/32-inch) shank tooling and is appropriate for job shops, production machining cells, and toolroom operations requiring a reliable, interchangeable collet in the ER25 range.

Key Features

• ER25 collet series for compatibility with ER25 chuck bodies
• 0.406-inch (13/32-inch) collet bore for standard round shank tooling
• Compact dimensions: 1.2 inches wide by 1.9 inches in height
• Lightweight at 0.1 pounds for minimal spindle load contribution
• Sold individually (package quantity of 1)

Compatibility

Designed for use with ER25-standard chuck bodies and toolholding systems that accept the ER25 collet series.

Installation Notes

ER collets are installed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before changing collets. Seat the collet fully into the ER25 nut before threading onto the chuck body, and torque the retention nut using a proper ER collet wrench to the chuck manufacturer's specification. Inspect the collet bore and seating surfaces for chips or wear before each use.