Bearing NO.
Cylindrical bore :NNU4121
Tapered bore :NNU4121K30
境界寸法（mm）
d :105
D :175
B/C :69
r 1.2min :2
r3.4min :2
基本定格荷重（kN）
Cr :413
Cor :670
Limiting speed(rpm)
Speed Ratings :3400
Abutment and fillet dimensions(mm)
da max :120
Da max :165
ra max :2
rb max :2
重量（kg）
Refer :6.7
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