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Model: NACHI 6810ZZE - Two dust cover deep groove ball bearings>
Bearing Size
d = 50D = 65
B = 7
da(min) = 52
Da(max) = 63
ra(max) = 0.3
Mass = 0.052
Basic load rating: 6400
Rated static load: 5800
Limit speed（Grease lubrication）: 5300
