Global Cnc Industries 8603J .375 Type J Tool Holder Bushing

Product Description

The GLOBAL CNC INDUSTRIES 8603J .375 is a Type J rotary tool holder bushing designed for use in fixed and renewable bushing systems common to drill jigs and tooling fixtures. It features a 0.375-inch inside diameter, a 1.5-inch outside diameter, and a 2.5-inch length under the head, with a head thickness of 0.265 inches. This bushing is used to guide cutting tools such as drills, reamers, and boring bars with precision alignment during machining operations. It is installed and serviced by machinists, toolmakers, and CNC setup technicians working in production and job-shop environments.

This Type J bushing is suited for applications requiring a head-style bushing seated in a drill jig plate or fixture body. The head style prevents the bushing from being pushed through the liner, making it appropriate for through-plate installations where the cutting tool enters from one face. Typical use includes production drilling, reaming, and similar guided-tool operations in metalworking and fabrication settings. The 1.125-inch distance between hole centers supports standard jig plate layouts.

Key Features

• Type J head-style bushing with 0.265-inch head thickness for positive seating in jig plates
• 0.375-inch (3/8 inch) inside diameter for compatible drill or reamer shanks
• 1.5-inch outside diameter for press-fit or slip-fit into standard liner bushings
• 2.5-inch length under head provides extended tool guidance depth
• 1.125-inch distance between hole centers supports standard fixture layouts

Compatibility

Designed as an OEM-style replacement or standard tooling component for Type J rotary tool holder bushing applications in drill jig fixtures and machining tooling systems.

Installation Notes

Tool holder bushings of this type are installed by toolmakers or machining technicians during jig and fixture assembly or maintenance. Ensure the mating liner bushing or jig plate bore is clean and dimensionally correct before pressing or seating the bushing. Power down all machine tools completely before servicing any tooling fixture. Do not force the bushing into an undersized bore, as damage to the bushing or fixture plate may result.