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Model: NACHI 6921 - Deep groove ball bearings>
Bearing Size
d = 105D = 145
B = 20
da(min) = 111
Da(max) = 139
ra(max) = 1
Mass = 0.793
Basic load rating: 42500
Rated static load: 42000
Limit speed（Grease lubrication）: 4200
Limit speed（Oil lubrication） 5100
