Accupro 587366 ER32 Collet 0.314 Inch 8.00mm

Product Description

The ACCUPRO 587366 is an ER32 series collet designed for precision tool holding in CNC machining, milling, and drilling operations. It accepts tooling with a nominal size of 0.314 inches (8.00 mm) and delivers a total indicator runout (TIR) of 0.01 mm, making it suitable for applications where concentricity and repeatability are critical. The minimum collet capacity is 0.275 inches (7.0 mm), giving the collet a working range that accommodates slight variation in tool shank diameter. Machinists, toolroom technicians, and CNC operators install this collet into compatible ER32 collet chucks or holders as part of a standard spindle tooling setup.

This collet is intended for use in machine shop environments running vertical or horizontal machining centers, knee mills, drill presses with collet chuck attachments, and similar equipment that accepts the ER32 standard. It is well suited to both production and toolroom work where consistent tool runout directly affects finished-part accuracy. The ER32 series is one of the most widely used collet standards in metalworking, and this size covers a broad range of common end mill and drill shank diameters near 8.00 mm.

Key Features

• ER32 collet series for compatibility with standard ER32 chucks and holders
• 0.01 mm TIR for precise concentricity in tool holding applications
• Nominal collet size of 0.314 inches (8.00 mm) with a minimum capacity of 0.275 inches (7.0 mm)
• Single-piece collet construction typical of the ER standard for reliable clamping force
• Suited for CNC machining centers, manual mills, and drill press collet chuck setups

Compatibility

Designed for use with ER32-standard collet chucks and tool holders. Specific chuck or holder compatibility depends on the machine spindle taper and holder manufacturer. Verify that your chuck accepts the ER32 collet series before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing any collet. Seat the collet into the chuck nut before threading the nut onto the holder body — do not tighten the nut with the collet absent from the nut. Inspect collet bore and chuck nut seat for chips or debris before assembly, as contamination directly increases runout.