Bearing NA 4909 (SKF)

Needle roller bearings, with machined rings, with an inner ring NA 4909

Bearing number : NA 4909

Size (mm) : 45x68x22

Brand : SKF

Bore Diameter (mm) : 45

Outer Diameter (mm) : 68

Width (mm) : 22

Bearing dimensions and specification in SKF catalogue:

d - 45 mm

D - 68 mm

B - 22 mm

F - 52 mm

r_1,2 - min. - 0.6 mm

s - 1 mm

d_a - min. - 49 mm

D_a - max. - 64 mm

r_a - max. - 0.6 mm

Basic dynamic load rating - C - 45.7 kN

Basic static load rating - C₀ - 78 kN

Fatigue load limit - P_u - 9.6 kN

Reference speed - 7500 r/min

Limiting speed - 8500 r/min

Mass bearing - 0.271 kg

Designation

Bore Dia, mm

Outer Dia, mm: