Accupro 784768 ER16 Collet 0.403 Inch

Product Description

The ACCUPRO 784768 is an ER16 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle applications that accept ER16 toolholders. With a decimal inch collet size of 0.403 inches and a minimum collet capacity of 0.375 inches, this collet provides a secure, concentric grip on round shank cutting tools within that clamping range. The overall length is 1.063 inches. Weighing 0.05 pounds, it is a compact, precision-ground component suited for high-speed machining operations. Installation and use is performed by machinists and CNC technicians in production and job-shop environments.

This ER16 collet is used in applications where ER16-compatible toolholding chucks are installed on vertical or horizontal machining centers, milling machines, routers, or grinding spindles. It is appropriate for both light-duty finishing passes and general-purpose material removal where the shank diameter of the cutting tool falls within the collet clamping range. The ER16 series is a widely adopted standard in production machining environments handling smaller-diameter tooling.

Key Features

• ER16 collet series — compatible with standard ER16 toolholding chucks
• Collet size of 0.403 inches decimal inch for precise tool clamping
• Minimum collet capacity of 0.375 inches accommodates a range of tool shank diameters
• Overall length of 1.063 inches suits compact ER16 chuck assemblies
• Lightweight at 0.05 pounds for minimal spindle load contribution

Compatibility

Designed as an OEM-style replacement or spare collet for use in standard ER16-compatible toolholding chucks and collet nuts used in CNC and manual machining spindle systems.

Installation Notes

Installation is performed by qualified machinists or CNC technicians. The spindle must be fully powered down and locked out before inserting or removing collets from a toolholder. Seat the collet fully into the ER16 chuck before threading on the collet nut to avoid damage to the collet taper. Inspect the collet bore and taper surfaces for chips or contamination before assembly to maintain runout accuracy.