pic: Hex Bearings

[Richard Wallace]

Originally Posted by wilsonmw04

I have a feeling they are not.

For reference, the pdf image that I posted in another thread comparing old and new 1/2 inch hex FR8 bearings showed parts from AndyMark. The HD bearing is one that I ordered a couple of weeks ago, while VexPro was out of stock.

By my measurement, the inner race outside diameter of the AndyMark HD bearing is 0.76 inch, which matches the value shown under the heading "Hex Bearing Update" at the bearings page of the VexPro web site.

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edit: I see Andrew beat me to one of the points above. To add a technical point, it makes sense that AM and VP would arrive at the same inner race outside diameter for more durable R8 hex bearings. This is because the improvement requires decreasing ball diameter, and bearing balls come in discrete standard diameters. So it is very possible that AM and VP are getting similar bearings from different sources.

The price difference will sort itself out. Markets are wonderful things.