Accupro 587511 ER40 Collet 0.472 Inch 12mm

Product Description

The ACCUPRO 587511 is an ER40 series collet designed for use in CNC machining centers, milling machines, lathes, and other rotating spindle equipment. It accepts a nominal collet size of 0.472 inches (12.00 mm) with a minimum collet capacity of 0.433 inches (11.0 mm), providing a defined clamping range suited to standard tooling shanks. The collet holds a Total Indicated Runout (TIR) of 0.01 mm, supporting accurate tool concentricity for precision cutting operations. Machinists, tool room technicians, and CNC setup personnel are the primary installers of this component.

This ER40 collet is used in any machine spindle or collet chuck that accepts the ER40 standard. Common applications include high-speed milling, drilling, reaming, and tapping operations in both production shop and job shop environments. The ER40 system is one of the most widely adopted collet standards in the industry, making this collet a routine replacement or supplemental tooling item across a broad range of machine tool setups.

Key Features

• ER40 series collet with 0.472 inch (12.00 mm) nominal collet size
• Minimum collet capacity of 0.433 inches (11.0 mm) for defined clamping range
• 0.01 mm TIR for reliable tool concentricity in precision cutting applications
• Compatible with the widely adopted ER40 collet chuck standard
• Sold individually (package quantity of 1)

Compatibility

Designed as an OEM-style replacement or supplemental collet for any machine spindle or collet chuck built to the ER40 standard.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Before installing or removing a collet, ensure the machine spindle is fully stopped and the machine is placed in a safe, locked-out state per shop safety procedures. Use the appropriate ER40 collet nut and spanner wrench to seat and torque the collet chuck assembly according to the machine tool manufacturer guidelines. Inspect the collet bore and chuck taper for chips or debris before assembly to maintain TIR performance.