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