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Model: NACHI 6811Z - Single dust cover deep groove ball bearings>
Bearing Size
d = 55D = 72
B = 9
da(min) = 57
Da(max) = 70
ra(max) = 0.3
Mass = 0.083
Basic load rating: 8800
Rated static load: 8100
Limit speed（Grease lubrication）: 8500
Limit speed（Oil lubrication） 10000
