Bearing NO.
Cylindrical bore :NN4980
Tapered bore :NN4980K
境界寸法（mm）
d :400
D :540
B/C :140
r 1.2min :4
r3.4min :4
基本定格荷重（kN）
Cr :1470
Cor :3800
Limiting speed(rpm)
Speed Ratings :1500
Abutment and fillet dimensions(mm)
da max :425
Da max :513
ra max :3
rb max :3
重量（kg）
Refer :84.1
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