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ball bearing
Tagged Discussions
Have you ever wondered how...
regal_aeros
@regal_aeros
(2605)
•
Singapore
26 Mar 09
How ball bearings are made? I can't help but wonder. Ball bearings are metal balls that are virtually flawless. it's hard to find any line or seam. Does anyone know how are ball bearings made?
ball bearing
flawless
round
smooth
wondered
