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Machining of Ball Screw
and Adjusting Nut

Machining of an Aluminum Bronze Adjusting Gear for a Metal Stamping Industry
Machining of an Aluminum Bronze Adjusting Gear for a Metal Stamping Industry

A Tennessee manufacturer of metal stamping equipment contracted Columbia Machine Works for the fabrication of an aluminum bronze adjusting gear. They were contracted for their reputation of being a trusted provider of highly accurate CNC machining services, and for their ability to machine complex, tight tolerance components with short lead times.

The customer specification called out the use of 3" thick aluminum bronze, requiring precision turning, keyway slotting, and gear cutting, as well as deburring and polishing. The finished gear featured dimensions of 12" in diameter, a bore of 7", and a height of 2-¾", all to tolerances of ±.001". This project was a one off that was produced in just one week. Columbia Machine Works backs up quality machining with a robust quality and inspection program that guarantee optimal results.

To learn more about this project, or the processes used to manufacture it, see the table below or contact Columbia Machine directly.

Highlights of a Machining of Ball Screw and Adjusting Nut

Capabilities Applied/Processes
  • Turning
  • Keyway Slotting
Gear Cutting

Equipment Used to Manufacture Part
CNC Lathe, Gear Cutter, Keyway Slotter
Overall Part Dimensions
Product Diameter: 12"
Product Bore: 7"
Product Height: 23/4"
Product Weight 73 lbs.
Tightest Tolerances
Material Used
Aluminum Bronze
  • Material Thickness: 3"
Material Finish
In Process Testing/Inspection Performed
Dimensional Inspection, Visual Inspection
Industry for Use
Metal Stamping Press Component
Delivery/Turnaround Time
1 Week
Delivery Location
Standards Met
Customer Specifications, 2D CAD Drawing
JIC Standards
Product Name
New Adjusting Gear
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