Value Collection SC84949866 Type B Tool Holder Bushing

Product Description

The VALUE COLLECTION SC84949866 is a Type B rotary tool holder bushing designed for use in drill jigs, CNC setups, and precision machining fixtures. The bushing features a 7/8 inch (0.8750 inch) inside diameter and a 1-3/4 inch (1.7500 inch) outside diameter, with a 3 inch length under the head. The head thickness measures 0.2950 inches. This style B press-fit or slip-fit bushing provides consistent tool guidance to maintain hole location accuracy during drilling, reaming, and boring operations. Machinists and tool room technicians rely on this type of component to reduce tool wander and extend drill life in production environments.

This bushing is suited for use in both production and job shop machining environments where repeatability of hole placement is critical. It is commonly installed in drill jig plates, fixture bodies, and tooling assemblies. The Type B designation identifies it as a headless-style or headed bushing per tooling standards — review your fixture design to confirm the correct bushing style before ordering. Applications include manual drill press work, CNC machining centers, and custom fixturing for medium to high production runs.

Key Features

• Type B bushing configuration for standard drill jig and fixture applications
• Inside diameter of 7/8 inch (0.8750 inch) for precise tool guidance
• Outside diameter of 1-3/4 inch (1.7500 inch) for secure press or slip fit in the fixture bore
• 3 inch length under the head provides adequate tool guidance depth for through-hole and deep-hole work
• Head thickness of 0.2950 inches provides a positive seating surface against the jig plate
• Weighs approximately 1.914 pounds — appropriate for heavy-duty fixture use

Compatibility

Designed as a standard Type B rotary tool holder bushing for use in drill jigs and machining fixtures that accept a 1-3/4 inch outside diameter bushing with a 7/8 inch bore.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with jig and fixture assembly. Ensure the receiving bore in the jig plate is machined to the correct tolerance for the intended fit class — press-fit installations require an arbor press and proper alignment tooling to avoid bushing damage or bore distortion. De-energize and lock out any associated machine before servicing or replacing bushings in a live fixture. Verify bushing seating and concentricity after installation before returning the fixture to service.