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Bearing Materials | Machine Design
https://www.machinedesign.com/mechanical-motion-systems/bearings/article/21812845/bearing-materials#:~:text=Regardless%20of%20material%20type%2C%20a%20commonly%20accepted%20minimum,SAE%2052100%20cannot%20be%20used%20much%20above%20350%C2%B0F.
Bearing Races Manufacturer - Hartford Technologies
https://hartfordtechnologies.com/bearing-parts-manufacturer/bearing-races/
Bearing races are most often manufactured from 52100 steel, (bearing quality chrome steel), which is valued for its mechanical strength, high hardness and excellent wear resistance for bearing parts. Hardness is typically Rockwell C 58 to 62. Hartford’s bearing parts, particularly races, are typically manufactured from a forged blank or pipe / tube stock. The part is then …
Minimum raceway hardness for lightly loaded needle …
https://www.eng-tips.com/viewthread.cfm?qid=339128
My guess is that the rollers are 63 Rc. I would assume that the raceways should be at least 55 Rc. Hardness above 63 Rc does little for life but your general statement about hardness is true. You can make something too hard and it becomes brittle. I assume you are speaking of surface hardness of the shaft rather than the core hardness.
Analysis of slewing bearing raceway and rolling element damage
https://www.hgb-bearing.com/industry-news/analysis-of-slewing-bearing-raceway-and-rolling-element-damage/
The slewing bearing raceway is also called the raceway erosion. This phenomenon is generally caused by poor heat treatment. Usually, the surface hardness of the raceway is too high and the hardened layer is relatively thin, and the interface layer of high hardness and low hardness is caused by the alternating stress.
How do I determine what hardness to change the bearing or the …
https://engineering.stackexchange.com/questions/32759/how-do-i-determine-what-hardness-to-change-the-bearing-or-the-track
They all pretty much explained me the same thing that using a a track that is 40-58 Rc will work just fine with a yoke roller that has an outer ring hardness of 58-62 which is the industry standard for that type of bearing. The bearing internal rolling elements and seals will wear out long before the track or the OD of the outer.
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