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Model: NACHI NNU4938K - Cylindrical roller bearing, tapered hole NNU series)>
Bearing Size
d = 190D = 260
B = 69
Fw = 212
Da(max) = 251
da(min) = 199
da(max) = 209
da1(min) = 204
ra(max)= 2
Mass = 10
Basic load rating: 485000
Rated static load: 1060000
Limit speed（Grease lubrication）: 2100
Limit speed（Oil lubrication） 2600
