Accupro 785046 ER40 Collet 0.125 Inch

Product Description

The ACCUPRO 785046 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other precision rotating spindle applications. It accepts tooling with a 0.125 inch (1/8 inch) shank and has a minimum collet capacity of 0.109 inches, giving it a useful clamping range for standard and undersize shanks. This collet is a core workholding component installed by machinists and tool-and-die professionals in production and job-shop environments. The unit measures 1.75 inches wide by 2 inches tall and weighs 0.6 pounds.

This collet fits ER40 collet chucks and is suited for general-purpose milling, drilling, reaming, and tapping operations. The ER40 series is one of the most widely used collet standards in production machining, making this collet a common replacement and stocking item for shops running ER40 toolholders. It is packaged individually and is appropriate for both light-duty and moderate-duty cutting applications where precise tool runout and secure clamping are required.

Key Features

• ER40 collet series — fits standard ER40 collet chucks
• 0.125 inch (1/8 inch) collet size with 0.109 inch minimum capacity
• Compact form factor: 1.75 inches wide by 2 inches tall
• Lightweight at 0.6 pounds for easy handling and spindle balance
• Single-piece packaging — sold individually

Compatibility

Designed as a direct-fit replacement for ER40 collet chucks accepting 1/8 inch shank tooling. Confirm chuck series and drawbar thread before installation.

Installation Notes

Installation is performed by machinists or toolroom technicians. Power down and lock out the spindle before seating or removing collets. Use the appropriate ER40 collet nut and torque wrench per the chuck manufacturer's specifications. Inspect the collet bore and chuck taper for chips or damage before each use to ensure proper runout and clamping force.