Accupro 785004 ER32 Collet 0.406 Inch Capacity

Product Description

The ACCUPRO 785004 is an ER32 series collet designed for precision workholding in CNC milling, drilling, and tapping operations. With a collet size of 0.406 inches and a minimum collet capacity of 0.375 inches, this collet provides secure, concentric clamping on round shanked tooling. The ER32 series is one of the most widely adopted collet standards in machine shops, offering a reliable interface between the spindle and cutting tool. Machinists and CNC operators install this collet into compatible ER32 collet chucks to maintain accurate tool positioning and minimize runout during high-speed cutting operations.

This collet is suited for use in vertical and horizontal machining centers, milling machines, and drilling machines equipped with ER32 collet chucks. It is a practical choice for production environments and job shops running end mills, drill bits, reamers, or taps within its clamping range. The compact profile — 1.75 inches in height and 1.5 inches in width and length — fits standard ER32 chuck bodies without modification.

Key Features

• ER32 collet series for broad compatibility with ER32 collet chucks
• 0.406 inch collet size with a minimum collet capacity of 0.375 inches
• Compact dimensions: 1.75 inches height, 1.5 inches width, 1.5 inches length
• Lightweight at 0.35 pounds for easy handling and tool changes
• Single-piece package quantity suitable for individual tool setup or replacement

Compatibility

Designed as an OEM-style replacement or direct-fit collet for machine tools equipped with ER32 collet chucks accepting a 0.406 inch collet size.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Before inserting or removing the collet, ensure the machine spindle is fully stopped and locked out per applicable machine safety procedures. Seat the collet into the collet chuck body before inserting the toolholder nut, and confirm the collet snaps into the nut retaining groove before tightening. Use a calibrated torque wrench and the chuck manufacturer's specified tightening procedure to avoid over-clamping or damaging the collet seats.