Value Collection SC08200065 Arbor Bushing Alloy Steel

Product Description

The VALUE COLLECTION SC08200065 is an alloy steel machine tool arbor bushing designed to adapt milling machine arbors to cutting tools with a smaller bore diameter. The bushing features a 7/8 inch hole diameter, a 2-1/8 inch outside diameter, and a 3-3/4 inch body length. A total indicator runout (TIR) of 0.0004 inch ensures precise, concentric tool holding during milling operations. At 3.25 pounds, this is a solid, robust component suited to demanding shop environments. Machinists, toolroom technicians, and machine tool service professionals install this type of bushing when fitting arbor-mounted cutters that require a reduced bore size.

This arbor bushing is intended for use with milling machine arbors where bore reduction is required to mount cutters accurately. The alloy steel construction resists wear and maintains dimensional stability under the cutting forces and vibration typical of horizontal and vertical milling operations. The tight TIR tolerance of 0.0004 inch makes this bushing appropriate for precision work where runout directly affects surface finish and tool life. It is suited to both production and toolroom milling setups.

Key Features

• 0.0004 inch TIR for precise, low-runout tool holding
• Alloy steel construction for wear resistance and dimensional stability
• 7/8 inch bore diameter accommodates standard arbor-mounted cutter shanks
• 2-1/8 inch outside diameter fits corresponding milling machine arbor bores
• 3-3/4 inch length provides solid engagement along the arbor
• Weighs 3.25 pounds, indicating substantial, solid construction

Compatibility

Designed for use with milling machine arbors requiring a 7/8 inch bore reduction to 2-1/8 inch outside diameter. Specific arbor compatibility should be verified against the arbor bore and drive key dimensions of the machine in use.

Installation Notes

Installation and removal of arbor bushings should be performed by a qualified machinist with the machine powered down and locked out per OSHA lockout/tagout procedures. The arbor and bushing bores should be cleaned and inspected for burrs or damage before assembly. Do not force the bushing onto the arbor with impact tools, as this can distort the bore and increase runout. Verify TIR with a dial indicator after assembly before initiating a cut.