What's the difference between Grade 3 SISN4 and Grade 5 SISN4 ceramic bearings? - grade 3 ceramic bearings
I'm trying to get a bearing kit for my center and bicycle wheels as an upgrade and there are two possibilities. The question is, what is the real difference between the two properties?
Thursday, January 28, 2010
Grade 3 Ceramic Bearings What's The Difference Between Grade 3 SISN4 And Grade 5 SISN4 Ceramic Bearings?
1 comment:
The fifth year is the highest degree (the perfect roundness and quality). Ceramic is harder than steel and soft roll and wear slower. It is more expensive, but worth the price, unless that often pack their centers.
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