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Model: NACHI 6220ZZ - Two dust cover deep groove ball bearings>
Bearing Size
d = 100D = 180
B = 34
da(min) = 112
Da(max) = 168
ra(max) = 2
Mass = 3.14
Basic load rating: 122000
Rated static load: 93000
Limit speed（Grease lubrication）: 2300
