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Model: NACHI NNU4956K - Cylindrical roller bearing, tapered hole NNU series)>
Bearing Size
d = 280D = 380
B = 100
Fw = 312
Da(max) = 369
da(min) = 291
da(max) = 308
da1(min) = 296
ra(max)= 2
Mass = 30.3
Basic load rating: 950000
Rated static load: 2230000
Limit speed（Grease lubrication）: 1400
Limit speed（Oil lubrication） 1700
