Accupro 785068 ER40 Collet 0.219 Inch

Product Description

The ACCUPRO 785068 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other rotating toolholding applications that accept the ER40 collet system. This collet holds tool shanks at a decimal inch size of 0.219 inches, with a minimum collet capacity of 0.188 inches, allowing it to grip a range of shank diameters within that window. Measuring 1.75 inches in width and length and 2 inches in height, it is a compact, single-piece toolholding component. Machinists and toolroom technicians install this collet during tool changes or spindle setups where precise, repeatable clamping force on round tool shanks is required.

The ACCUPRO 785068 is suited for production and job-shop environments running ER40-compatible toolholding systems. It fits spindles, chucks, and collet nuts manufactured to the ER40 standard, which is one of the most widely adopted collet series in CNC and manual machining. Typical applications include end milling, drilling, reaming, and tapping where a secure, concentric grip on the tool shank is critical to cut quality and tool life. This collet ships as a single unit and is intended for direct replacement or inventory replenishment in facilities maintaining ER40 tooling setups.

Key Features

• ER40 collet series for broad compatibility with ER40-standard spindles and collet chucks
• 0.219 inch nominal collet size with a minimum collet capacity of 0.188 inches
• Compact form factor: 1.75 inches wide by 1.75 inches long by 2 inches tall
• Lightweight at 0.6 pounds, suitable for high-speed toolholding applications
• Single-unit packaging for direct stock replacement or individual tool setup

Compatibility

Designed for use with ER40-standard collet chucks, spindle noses, and collet nuts that accept the ER40 collet series.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Before changing collets, power down the spindle completely and confirm the machine is in a safe, locked-out state per applicable lockout/tagout procedures. Insert the collet into the collet nut before threading it onto the spindle or chuck body, and tighten using the appropriate ER40 collet wrench to the chuck manufacturer's specified procedure. Inspect the collet bore and seating surfaces for chips or wear before each use to maintain runout accuracy.