Global Cnc Industries 8602B .250 Rotary Tool Holder Bushing

Product Description

The GLOBAL CNC INDUSTRIES 8602B .250 is a Type B rotary tool holder bushing designed for use in machine tool applications where precise bore alignment and repeatable tool positioning are required. With an inside diameter of 0.250 inches and an outside diameter of 1.0000 inches, this bushing provides a close-tolerance fit in compatible tool holder blocks and drill jig assemblies. The head thickness measures 0.265 inches, and the length under the head is 1.750 inches. Machinists and tool room professionals install this type of bushing in jig and fixture setups to guide cutting tools and maintain dimensional accuracy across production runs.

This bushing is suited for use in drill jigs, boring fixtures, and rotary tool holder systems found in production machining and toolroom environments. Type B bushings are commonly installed in applications where a headed style is required to seat against a jig plate or fixture body. This part is sold individually and is appropriate for shops running standard fractional tooling at the 1/4-inch bore size.

Key Features

• Type B headed bushing design seats flush against jig plate surfaces
• Inside diameter of 0.2500 inches for 1/4-inch bore tool guidance
• Outside diameter of 1.0000 inches for standard block fitment
• Length under head of 1.750 inches for adequate tool engagement depth
• Head thickness of 0.265 inches provides positive seating and retention

Compatibility

Designed as an OEM-style replacement or direct-fit component for rotary tool holder and drill jig systems requiring a Type B bushing with a 1/4-inch inside diameter and 1-inch outside diameter.

Installation Notes

Installation is typically performed by machinists or toolroom technicians during fixture assembly or maintenance. Ensure the host jig plate or tool holder block is clean and free of burrs before pressing or inserting the bushing. Disengage all machine power and lock out energy sources before servicing any fixture mounted to a machine tool. Do not force-fit the bushing with impact tools if resistance is encountered, as this may damage the bore or alter alignment.