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Bearing Inner Race for the
Automotive Industry
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CNC Grinding of Steel Bearing Inner Race for the Automotive Industry

At Groundim XI Precision Grinding, we have built a strong reputation for providing precision grinding operations that have supported the needs of many major industries, ranging from medical to aerospace and tooling. Combining expertise with top-notch technology, Groundim XI Precision Grinding was recently contracted by a client from Oakland, California to grind a series of steel bearing inner races for an automotive application.

Using an aluminum oxide abrasive cutting wheel, we ground both the inner and outer diameters of the parts, ensuring that the products met precise client specifications for dimension. Constructed from SAE 52100 steel material, each inner race measured 2.525 inches in length, 3.2370 inches in outer diameter, and 2.8750 inches in inner diameter, with a wall thickness of .360 of an inch. After the grinding process was completed, each part weighed one pound and possessed a smooth, 16 RMS finish.

Equipped with top-notch precision grinding technology, we were able to hold an extremely tight overall tolerance of just (±) .0002 of an inch. We met a circular run out of .0005 of an inch, a parallelism and perpendicularity tolerance of .0005 of an inch, and a roundness tolerance of just .0005 of an inch. Using our advanced CNC inner and outer diameter grinding processes, we were able to grind over 100 steel bearing inner races for the automotive industry, delivering these products directly to our client's West Coast location.

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Specifications

Product Description   This bearing Inner Race is used within an automotive application
Capabilities Applied/Processes   CNC ID & OD Grinding
Equipment Used to Manufacture Part   Aluminum Oxide Abrasive Cutting Wheel
Overall Part Dimensions  
O.D.: 3.2370"
I.D.: 2.8750"
Length: 2.525"
Wall Thickness: .360"
.030 x 45° Chamfer, Both Ends
Tightest Tolerances  
±.0002"
Circular Runout of .0005"
Parallelism of .0005"
Perpendicularity of .0005"
Round Within .0002"
Material Used   SAE 52100 Steel
Max Material Finish   16 RMS
Hardness   Rockwell-Rc 60-65
Estimated Part Weight   1lb
Industry for Use   Automotive
Volume   100+
Delivery Location   Oakland, California
Standards Met   Customer supplied print, 2D CAD Drawing
Product Name   Bearing Inner Race

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