Value Collection SC84949759 Tool Holder Bushing Type B

Product Description

The VALUE COLLECTION SC84949759 is a Type B rotary tool holder bushing designed for use in drill jigs, fixtures, and precision machining setups. It features a 7/8 inch (0.8750 inch) inside diameter and a 1-1/4 inch (1.2500 inch) outside diameter, with a length under head of 2-1/8 inches (2.1250 inches). The head thickness measures 0.265 inches. This bushing guides cutting tools such as drills and reamers, maintaining accurate hole location and reducing tool deflection during operation. It is installed by machinists and toolroom technicians working in production or maintenance machining environments.

This Type B tool holder bushing suits applications in drill press, milling, and jig-boring operations where a headed, press-fit guide bushing is required. It is appropriate for both production runs and one-off fixturing work in metalworking shops, maintenance facilities, and manufacturing plants. The headed design seats against the jig plate surface, providing a positive stop and preventing the bushing from being pushed through during operation. Machinists select this style when a renewable or fixed liner configuration calls for a Type B profile.

Key Features

• Type B headed bushing design provides a positive seating stop against the jig plate
• Inside diameter of 0.8750 inches guides tooling with close tolerances
• Outside diameter of 1.2500 inches for standard liner or press-fit installation
• Length under head of 2.1250 inches accommodates thicker jig plates and workpieces
• Head thickness of 0.265 inches adds retention strength at the seating face
• Weight of 1.606 pounds indicates solid, dense construction suitable for repeated use

Compatibility

Designed as a standard Type B drill jig bushing for use in conventional tool holder and liner bushing systems where a 1-1/4 inch outside diameter press or liner fit is specified.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. The mating jig plate bore should be finished to the appropriate tolerance before pressing or seating the bushing. Ensure the jig plate and bushing bore are clean and free of burrs prior to installation. Follow standard shop practices for press-fit components and inspect for concentricity after seating.