Accupro 785053 ER40 Collet 0.531 Inch

Product Description

The ACCUPRO 785053 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other rotating toolholding applications. It accepts tooling with a decimal inch size of 0.531 inches and a minimum collet capacity of 0.516 inches, giving machinists a reliable clamping range for end mills, drills, and other round-shank cutting tools. The collet measures 1.75 inches wide by 1.75 inches deep by 2 inches in height and weighs 0.6 pounds. It is installed by qualified machinists and toolroom personnel working with ER40-compatible spindle systems.

This collet is suited for production and job-shop environments where ER40 toolholding is the standard. Typical applications include vertical and horizontal milling, drilling, and reaming operations. The ER40 series is widely used across general metalworking, aerospace, and precision machining shops. It is sold individually and is ready to install in any ER40-compatible collet chuck without modification.

Key Features

• ER40 collet series for broad compatibility with ER40 collet chucks
• Decimal inch size of 0.531 inches for consistent tool clamping
• Minimum collet capacity of 0.516 inches
• Compact dimensions: 1.75 x 1.75 x 2 inches
• Lightweight at 0.6 pounds for easy handling during tool changes
• Sold individually with a minimum order quantity of one

Compatibility

Designed as an OEM-style replacement or direct-fit collet for machines equipped with ER40-series collet chucks.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before installing or removing the collet, ensure the machine spindle is fully powered down and at a complete stop. Use the appropriate ER40 collet nut and spanner wrench rated for the application. Do not exceed the recommended runout tolerances for the chuck and collet assembly, and inspect the collet bore and taper for chips or damage before each use.