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Model: NACHI 6808 - Deep groove ball bearings>
Bearing Size
d = 40D = 52
B = 7
da(min) = 42
Da(max) = 50
ra(max) = 0.3
Mass = 0.033
Basic load rating: 5950
Rated static load: 4900
Limit speed（Grease lubrication）: 12000
Limit speed（Oil lubrication） 14000
