Global Cnc Industries 8608B 2.250 Rotary Tool Holder Bushing

Product Description

The GLOBAL CNC INDUSTRIES 8608B 2.250 is a Type B rotary tool holder bushing designed for use in machine tool applications where precise bore alignment and secure tooling support are required. With a 2.25-inch inside diameter, 3.5-inch outside diameter, and a length under head of 5.25 inches, this bushing provides a stable, close-tolerance fit in tool holder blocks and drill jig assemblies. The 0.365-inch head thickness delivers a positive seating surface that resists axial movement during operation. Machinists and CNC machine operators install this component as part of tooling setups on milling machines, drill presses, and similar rotating-spindle equipment.

This Type B bushing is suited for industrial machining environments, including production shops and job shops running CNC or manual equipment. It fits applications where a flanged head style is required to locate and retain the bushing within a tool holder body. The 2.25-inch bore accommodates larger-diameter tooling shanks common in heavy-duty drilling, boring, and reaming operations. The flanged Type B configuration distinguishes it from press-fit or slip-renewable styles, making it appropriate for setups that require positive head engagement against the host fixture or block.

Key Features

• Type B flanged bushing configuration with 0.365-inch head thickness for positive axial location
• 2.25-inch inside diameter accommodates large-shank tooling in heavy-duty machining setups
• 3.5-inch outside diameter for secure fit within tool holder bodies and jig plates
• 5.25-inch length under head provides extended bearing surface for improved tool alignment
• Single-piece construction suited for consistent, repeatable tooling setups

Compatibility

Designed as a Type B rotary tool holder bushing for use in machine tool holder blocks, drill jig assemblies, and similar fixturing applications requiring a 2.25-inch bore and 3.5-inch outside diameter flanged bushing.

Installation Notes

Installation is typically performed by a machinist or CNC tooling technician. Ensure the machine spindle is fully de-energized and the tool holder block is secured before installing or removing the bushing. Verify bore and OD tolerances in the host fixture before pressing or seating the bushing to avoid damage to the mating surfaces. Consult applicable shop safety standards and equipment manufacturer guidelines for proper tooling installation procedures.