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Model: NACHI NNU4934 - Cylindrical roller bearings, cylindrical hole NNU series)>
Bearing Size
d = 170D = 230
B = 60
Fw = 188.5
Da(max) = 221
da(min) = 179
da(max) = 186
dc(min) = 192
ra(max)= 2
Basic load rating: 375000
Rated static load: 805000
Limit speed（Grease lubrication）: 2400
Limit speed（Oil lubrication） 2900
