Bearing NA4909 (INA)

Needle roller bearings NA4909

Bearing number : NA4909

Size (mm) : 45x68x22

Brand : INA

Bore Diameter (mm) : 45

Outer Diameter (mm) : 68

Width (mm) : 22

Bearing dimensions and specification in INA catalogue:

d - 45 mm

D - 68 mm

B - 22 mm

F - 52 mm

r_min - 0,6 mm

s - 1 mm / Axial displacement

m - 271 g / Weight

C_r - 51000 N / Dynamic load rating (radial)

C_0r - 73000 N / Static load rating (radial)

C_ur - 12600 N / Fatigue limit load, radial

n_G - 8600 1/min / Limiting speed

n_B - 4750 1/min / Reference speed

dimension series 49, to DIN 617/ISO 1206

Designation

Bore Dia, mm

Outer Dia, mm: