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Model: NACHI 6960 - Deep groove ball bearings>
Bearing Size
d = 300D = 420
B = 56
da(min) = 311
Da(max) = 409
ra(max) = 2.5
Mass = 22.8
Basic load rating: 269000
Rated static load: 370000
Limit speed（Grease lubrication）: 1300
Limit speed（Oil lubrication） 1500
