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Model: NACHI 51256 - One-way thrust ball bearing (Flatbackface)>
Bearing Size
d = 280D = 380
T = 80
r = 2.1
D1(min)= 284
d1(max) = 375
da(min) = 340
Da1(max) = 320
ra(max) = 2
Mass = 27
Basic load rating: 450000
Rated static load: 1950000
Limit speed（Grease lubrication）: 530
Limit speed（Oil lubrication） 800
