Accupro 588378 ER32 Collet 20 Mm

Product Description

The ACCUPRO 588378 is an ER32 series collet sized at 20 mm, designed for use in ER32-compatible collet chucks on milling machines, machining centers, and CNC lathes. The collet grips cutting tools, drills, reamers, and other round-shank tooling by compressing radially when tightened into a compatible chuck nut and holder. The ER32 series is one of the most widely used collet standards in precision machining, offering a balance of gripping range, runout accuracy, and axial rigidity. This collet is sold individually and is suited for machine shops, tool rooms, and production environments where consistent tool holding is required.

The 588378 collet fits any ER32-standard collet chuck and is appropriate for use on vertical and horizontal machining centers, manual mills, and CNC turning centers equipped with live tooling. It is most commonly installed by machinists and CNC setup technicians working with 20 mm shank tooling. The collet supports applications ranging from roughing to finishing operations where accurate tool positioning and repeatable clamping force are needed.

Key Features

• ER32 collet series — compatible with all standard ER32 collet chucks and nuts
• 20 mm collet size for use with 20 mm shank cutting tools and workholding
• Radial compression design provides concentric clamping and reduced runout
• Suitable for milling, drilling, reaming, and tapping operations
• Sold individually — package quantity of 1

Compatibility

Designed as a direct-fit replacement or addition for any ER32-standard collet chuck system. Specific model compatibility was not provided in the product data; verify chuck series before installation.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Before installing or changing collets, ensure the machine spindle is fully stopped and the control is in an e-stop or locked-out state per applicable lockout/tagout procedures. Seat the collet fully into the collet nut before threading onto the chuck body, and torque the nut using the appropriate ER32 collet wrench to manufacturer-specified values for the chuck in use. Inspect the collet bore and seating surfaces for chips or damage before each use to maintain clamping accuracy.