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Model: NACHI NF234 - Cylindrical roller bearing (NF series)>
Bearing Size
d = 170D = 310
B = 52
Ew = 272
db(min) = 188
db(max) = 292
dd(min) = 223
Da(max) = 292
ra(max) = 3
Basic load rating: 475000
Rated static load: 635000
Limit speed（Grease lubrication）: 1800
Limit speed（Oil lubrication） 2200
