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Ceramic Wheel Bearings?


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Not here for an argument but several Drag racers tried ceramic wheel bearings back in the 90's and 00's. Ceramics are actually harder than steel so a Ceramic ball on a ceramic track should last longer and without requiring lubricant as well. Brad O'Connor did some calcs based on the claims for the bearings and deduced if they were true, a steel bearing should heat up to the equivalent of about 100w ie. you should be able to feel distinct warmth. He never found this to be true in the real world, so draw your own conclusions. They are good bearings and are very low friction but unless you are sponsored would you use them? Probably not!

Steel bearings DO heat up if you push them to the extremes of their operating window ie. machinery spindles rotating at 20k rpm and Land Speed vehicles going mile after mile at V max! These applications must use 'special' greases in correct quantities - they are that fussy!

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1 hour ago, Gixer1460 said:

Not here for an argument but several Drag racers tried ceramic wheel bearings back in the 90's and 00's. Ceramics are actually harder than steel so a Ceramic ball on a ceramic track should last longer and without requiring lubricant as well. Brad O'Connor did some calcs based on the claims for the bearings and deduced if they were true, a steel bearing should heat up to the equivalent of about 100w ie. you should be able to feel distinct warmth. He never found this to be true in the real world, so draw your own conclusions. They are good bearings and are very low friction but unless you are sponsored would you use them? Probably not!

Steel bearings DO heat up if you push them to the extremes of their operating window ie. machinery spindles rotating at 20k rpm and Land Speed vehicles going mile after mile at V max! These applications must use 'special' greases in correct quantities - they are that fussy!

This.  Very much this.

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