Accupro 784865 ER16 Collet Set 13 Piece 4-10mm

Product Description

The ACCUPRO 784865 is a 13-piece ER16 collet set designed for use with ER16-compatible toolholders on CNC machining centers, manual mills, and high-speed spindles. The set covers a capacity range from 4.00 mm to 10.00 mm in 0.50 mm increments, providing a complete working range for typical ER16 applications. Each collet in the set is rated at a Total Indicator Runout (TIR) of 0.02 mm, supporting accurate concentricity for precision cutting tool retention. The collets are designed with an ER coolant-through system, making them suitable for applications requiring through-spindle coolant delivery. This set is installed by machinists and CNC setup technicians.

This collet set is suited for machine shops, tool rooms, and production environments where a full range of ER16 collet sizes is needed in a single purchase. The 0.50 mm step increments from 4.00 mm through 10.00 mm allow the set to accommodate a wide variety of shank diameters for end mills, drills, reamers, and other round-shank cutting tools. The coolant-through design supports operations where chip evacuation and tool cooling are priorities, such as deep-hole drilling and high-feed milling.

Key Features

• 13-piece set covers 4.00 mm to 10.00 mm in 0.50 mm increments
• ER16 series collets compatible with standard ER16 toolholders
• 0.02 mm TIR rating supports precision tool concentricity
• Coolant-through (ER Coolant) system design for through-spindle coolant applications
• Single-set solution eliminates the need to source individual collet sizes separately

Compatibility

Designed for use with ER16-series toolholders and collet chucks that accept the standard ER16 collet form factor. Compatible with ER16 collet nuts and ER16 spindle toolholding systems.

Installation Notes

ER collets are installed and removed by machinists using an appropriate ER16 collet nut and spanner wrench or collet chuck wrench. Always de-energize and lock out the machine spindle before changing collets. Seat the collet fully into the collet nut before inserting the assembly into the toolholder, and verify runout with a test indicator after clamping to confirm TIR is within tolerance for the application.