Inner Races

At SC Industries, Inc. we continually invest in cutting-edge manufacturing technologies that give us the capacity to produce tight tolerances and exceptional surface finishes. We manufactured the inner race pictured here for use in a heavy truck. Primary operations involved CNC turning and OD grinding, but it was our precision flat double disk grinder in the hands of our skilled manufacturing technicians that produced the 16 micro surface finish and the tight ±0.0002″ dimensional tolerances.

To boost part strength, we applied a carefully calculated heat treatment, which would harden the part while preserving its dimensional integrity. We also executed a range of quality assurance procedures, including hardness testing and dimensional inspection using precision calibrated surface plates and dial indicators.

When completed, this inner race measured 4″ x 3″ x 0.062″. As a crucial mechanical component of a heavy duty vehicle, its quality construction ensured smooth motion of the bearing system over an extended lifecycle. If you are interested in learning more about this project or any of our manufacturing capabilities, contact us today.

Inner races

Inner races


Product Description Inner Races
Primary Capabilities Applied/Processes CNC Turning
Precision Grinding
Double-Disk Grinding
Secondary Capabilities Applied/Processes Precision Heat Treating
Equipment Used to Manufacture Part CNC Lathe
OD Grinder
Double-Disk Grinder
Expertise Precision Flat Double-Disk Grinding
Overall Part Dimensions 4 x 3 x 0.062 in
Tightest Tolerances ± 0.0002 in
Material Used Alloy Steel
Material Finish 16 micro
In process testing/inspection performed Hardness Testers
Surface Plates
Dial Indicators
Industry for Use Heavy Auto
Heavy Truck
Volume Various
Delivery/Turnaround Time 4 Weeks
Delivery Location As Required
Standards Met Customer Specifications
2D CAD Drawing

We have manufactured precision hardened metal bushings for over 75 years— serving many industrial markets, including:

    • Off Highway Construction
    • Mining
    • Transportation Transit Systems
    • Hydraulics
    • Printing Presses
    • Material Handling
    • Plastic Injection Molding
    • Lamp Glass Lighting
    • Packaging
    • Machinery and Equipment
    • Machinery Rebuilders
    • Tooling