THB BEARINGS CO., LTD.
THB BEARINGS CO., LTD.
NA 4909

NA 4909 Machined Needle Roller Bearing

Specifications of NA 4909 Machined Needle Roller Bearing


DesignationsNA4909
Dimensions(mm)d45
D68
B22
C–
r1,20.6
F52
Basic load ratings(KN)Basic load ratings (dynamic)(C)44,8
Basic load ratings (static)(C0)75,7
Fatigue load limit (Pu)9,5
Speed ratings(r/min)Speed ratings (Reference speed)7 500
Speed ratings (Limting speed)8 500
Mass(kg)0,27