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Model: NACHI 51211 - One-way thrust ball bearing (Flatbackface)>
Bearing Size
d = 55D = 90
T = 25
r = 1
D1(min)= 57
d1(max) = 90
da(min) = 76
Da1(max) = 69
ra(max) = 1
Mass = 0.61
Basic load rating: 69500
Rated static load: 159000
Limit speed（Grease lubrication）: 2100
Limit speed（Oil lubrication） 3100
