Accupro ER32HP 05.55 ER32 Collet 7/32 Inch

Product Description

The ACCUPRO ER32HP 05.55 is an ER32 series collet designed to hold 7/32-inch diameter tooling in CNC machining centers, milling machines, and high-speed spindles. It delivers a total indicator runout (TIR) of 0.0002 inches (0.005 mm), providing the concentricity required for precision drilling, reaming, and end milling operations. The overall length is 40.0 mm. This collet is installed by machinists and CNC technicians as part of a standard ER32 collet chuck assembly, offering consistent clamping force and repeatable tool positioning across production runs.

This collet is suited for use in shops running ER32-compatible collet chucks on vertical machining centers, horizontal mills, and CNC lathes with live tooling. The 7/32-inch bore size accommodates straight-shank cutting tools, drill bits, and reamers of that diameter. It is a direct-fit replacement in any ER32 chuck system meeting DIN 6499 or ISO 15488 standards where that bore size is required.

Key Features

• ER32 collet series for broad compatibility with ER32 chuck systems
• 7/32-inch collet bore for straight-shank tooling
• TIR of 0.0002 inches (0.005 mm) for high-precision concentricity
• 40.0 mm overall length suits standard ER32 chuck depths
• Single-piece quantity packaging for individual replacement or fleet additions

Compatibility

Designed as an OEM-style replacement collet for ER32 collet chuck systems accepting a 7/32-inch bore size.

Installation Notes

Installation is performed by a machinist or CNC technician. Power down and lock out the spindle before removing or installing any collet. Seat the collet fully into the collet nut before threading onto the chuck body, and use a calibrated torque wrench with the appropriate ER32 collet nut spanner to achieve proper clamping without over-torquing. Inspect the collet bore, chuck taper, and collet nut threads for wear, chips, or contamination before each installation.