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Model: NACHI 7034DB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 170D = 260
B = 42
a = 41.1
da1(min) = 179
da2(min) = 179
Da1(max) = 251
Da2(max) = 254
ra(max) = 2
ra1(max) = 1
Mass = 7.87
Basic load rating: 291000
Rated static load: 420000
Limit speed（Grease lubrication）: 1600
Limit speed（Oil lubrication）: 2100
