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Model: NACHI 30256 - Metric tapered roller bearings>
Bearing Size
d = 280D = 500
B = 80
T = 89
C = 67
a = -10
da(min) = 302
db(max) = 323
Da(min) = 432
Db(min) = 467
S1(min) = 9
S2(min) = 16
Cone ra(max) = 5
Cup ra(max) = 4
Mass = 66
Basic load rating: 1270000
Basic load rating: 1270000
Rated static load: 1910000
Limit speed（Grease lubrication）: 620
Limit speed（Oil lubrication） 820
