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Model: NACHI NP424 - Cylindrical roller bearing (NP series)>
Bearing Size
d = 120D = 310
B = 72
Ew = 260
db(min) = 142
db(max) = 288
dc(max) = 172
Da(max) = 288
ra(max) = 4
ra1(max) = 4
Basic load rating: 670000
Rated static load: 770000
Limit speed（Grease lubrication）: 1900
Limit speed（Oil lubrication） 2400
