Accupro 784879 ER16 Collet 0.156 Inch Capacity

Product Description

The ACCUPRO 784879 is an ER16 series collet designed for precision workholding in CNC milling, drilling, and routing applications. It holds workpieces or cutting tools with a capacity of 0.156 inches and a minimum collet capacity of 0.141 inches, making it suitable for close-tolerance passes where runout control is critical. The collet delivers a total indicator runout (TIR) of 0.02 mm, a benchmark that matters in finish machining and tight-tolerance boring work. Machinists and CNC setup technicians are the primary installers. At 0.05 pounds, this collet fits easily into standard ER16-compatible toolholders found on vertical machining centers and CNC routers.

This collet is used in production and job-shop environments where ER16 toolholding systems are already in place. Typical applications include light milling, engraving, drilling, and tapping with small-diameter cutting tools or workpiece stock up to 0.156 inches. The ER16 series is common on benchtop CNC routers, small vertical machining centers, and multi-axis machines where spindle nose size limits toolholder shank diameter. It is sold individually, allowing technicians to stock specific sizes as needed without purchasing a full set.

Key Features

• ER16 collet series for use with ER16-compatible toolholders and nuts
• 0.156 inch capacity with a minimum capacity of 0.141 inches for secure gripping range
• 0.02 mm TIR for precision runout control in finish and close-tolerance operations
• Lightweight at 0.05 pounds, minimizing added mass in high-speed spindle applications
• Sold as a single unit (quantity of 1) for targeted size replacement or inventory builds

Compatibility

Designed as an OEM-style replacement or direct-fit collet for ER16-series toolholding systems. Compatible with any ER16 collet chuck or toolholder that accepts the standard ER16 collet form factor.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before inserting or removing any collet. Seat the collet fully into the ER16 nut before threading the assembly onto the toolholder body to prevent collet damage. Inspect the collet bore and toolholder taper for chips or contamination before tightening to preserve TIR performance.