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Model: NACHI NNU4936 - Cylindrical roller bearings, cylindrical hole NNU series)>
Bearing Size
d = 180D = 250
B = 69
Fw = 202
Da(max) = 241
da(min) = 189
da(max) = 199
dc(min) = 205
ra(max)= 2
Basic load rating: 480000
Rated static load: 1020000
Limit speed（Grease lubrication）: 2200
Limit speed（Oil lubrication） 2700
