What are the advantages the expensive bearings have over the cheap ones? Do they last longer, and if so would it be worth it to keep buying the cheap ones, or just go with the expensive ones?


Cheap set
7007C Precision Ball Bearing 35x62x14
7005C Precision Ball Bearing 25x47x12

Expensive set
BNH007TU Nachi Angular Contact 35x62x14
7005CYP4 Nachi Angular Contact 25x47x12

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