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Model: NACHI 7011CDF - Angular contact ball bearings (DF) face to face>
Bearing Size
d = 55D = 90
B = 18
a = -0.6
da1(min) = 61
da2(min) = 61
Da1(max) = 84
Da2(max) = 86
ra(max) = 1
ra1(max) = 0.6
Mass = 0.42
Basic load rating: 56000
Rated static load: 57500
Limit speed（Grease lubrication）: 8800
Limit speed（Oil lubrication）: 12000
