Value Collection SC08200040 Arbor Bushing Alloy Steel

Product Description

The VALUE COLLECTION SC08200040 is an alloy steel arbor bushing designed to adapt milling machine arbors to tooling with differing bore sizes. The bushing features a 1 inch hole diameter, a 1-7/8 inch outside diameter, and a 3-1/8 inch overall length. It holds a total indicator runout (TIR) of 0.0004 inches, providing the close concentricity tolerances that precision milling operations require. Machined from alloy steel for durability under cutting loads, this bushing is a standard consumable stocked and replaced by machinists and toolroom technicians in production and job-shop environments.

This bushing is intended for use with milling machine arbors where the arbor outside diameter needs to be stepped down to accept 1 inch bore tooling. It suits horizontal and vertical milling setups in both production and maintenance machining applications. The 3-1/8 inch length provides sufficient contact area for stable tool seating along the arbor shank. Weighing 1.12 pounds, the part ships as a single unit and is a direct drop-in for standard arbor configurations requiring this size combination.

Key Features

• 1 inch hole diameter for compatibility with 1 inch bore tooling
• 1-7/8 inch outside diameter fits corresponding milling machine arbor bores
• 3-1/8 inch length provides full engagement along the arbor shank
• 0.0004 inch TIR runout for precision concentricity in milling operations
• Alloy steel construction resists wear and deformation under milling loads

Compatibility

Designed for use with milling machine arbors, as specified by the manufacturer. Verify arbor outside diameter and tooling bore requirements before installation to confirm fitment.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with milling machine arbor systems. Ensure the milling machine spindle is fully de-energized and the arbor is removed from the machine before fitting or removing the bushing. Inspect the arbor bore and bushing OD for nicks or burrs and clean contact surfaces before assembly to preserve the stated runout tolerance. Follow the machine manufacturer guidelines for drawbar torque and arbor retention hardware.