RNA4909 bearing
Bearing Designation
Without IR :RNA4909
Weight :163
With IR :-
Shaft Diameter（mm） :-
Weight(Kg) :52
Boundary Dimensions(mm)
d :-
Fw :52
D :68
C :-
B :22
Basic Load Rating(N)
Dynamic :37000
Static :69500
Limiting Speed(rpm)
Oil :7600
Needle roller bearing is a special type roller bearing which uses long, thin cylindrical rollers resembling needles. Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a great load. They are widely used in automobile components such as rocker arm pivots, pumps, compressors and transmissions.
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