Accupro 777702 Milling Chuck Collet 5/16 in Id 3/4 in Od

Product Description

The ACCUPRO 777702 is a milling chuck collet designed for secure tool holding in milling operations. It features a 0.3125 inch (5/16 inch) inside diameter and a 0.75 inch (3/4 inch) outside diameter, with an overall length of 2.1 inches. This collet seats into a compatible milling chuck body to grip cutting tools and transmit rotational force with minimal runout. Machinists and toolroom technicians install this component when setting up end mills, drills, or other shank tooling in CNC or manual milling machines. Through-coolant is not supported on this collet.

This collet is suited for general-purpose milling applications in machine shops, toolrooms, and production environments. It is used in setups requiring a 5/16 inch bore collet seated in a 3/4 inch OD chuck body. Typical applications include end mill holding, slot milling, and similar metal-removal operations on vertical or horizontal milling machines. This collet is sold individually.

Key Features

• 0.3125 inch (5/16 inch) inside diameter for precise tool shank fit
• 0.75 inch (3/4 inch) outside diameter for standard milling chuck body seating
• 2.1 inch overall length for proper chuck engagement depth
• No through-coolant bore, suitable for dry or flood coolant setups without internal delivery
• Lightweight at 0.1 pounds for easy handling during tool changes

Compatibility

Designed as an OEM-style replacement or standard collet for milling chuck bodies accepting a 3/4 inch OD collet with a 5/16 inch bore.

Installation Notes

This collet is installed by qualified machinists or toolroom technicians. Before changing or seating a collet, power down and lock out the machine spindle per established lockout/tagout procedures. Use the appropriate collet nut spanner and chuck body wrench to seat and torque the collet nut - do not use improvised tools that can damage the collet taper or chuck threads. Inspect the collet bore and taper surfaces for chips or debris before installation to maintain runout accuracy.