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Model: NACHI 5311 - Open type double row angular contact ball bearings>
Bearing Size
d = 55D = 120
B = 49.2
da(min) = 65
Da(max) = 110
ra(max) = 2
Mass = 2.3
Basic load rating: 112000
Rated static load: 86500
Limit speed（Grease lubrication）: 4000
Limit speed（Oil lubrication）: 5500
