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Model: NACHI 6801 - Deep groove ball bearings>
Bearing Size
d = 12D = 21
B = 5
da(min) = 14
Da(max) = 19
ra(max) = 0.3
Mass = 0.006
Basic load rating: 1920
Rated static load: 1040
Limit speed（Grease lubrication）: 32000
Limit speed（Oil lubrication） 39000
