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Model: NACHI 7238BDF - Angular contact ball bearings (DF) face to face>
Bearing Size
d = 190D = 340
B = 55
a = 83.7
da1(min) = 208
da2(min) = 199
Da1(max) = 322
Da2(max) = 331
ra(max) = 3
ra1(max) = 1.5
Mass = 21.5
Basic load rating: 475000
Rated static load: 770000
Limit speed（Grease lubrication）: 1100
Limit speed（Oil lubrication）: 1600
