Bearing NJ 308 ECM (SKF)

Cylindrical roller bearings, single row NJ 308 ECM

Bearing number : NJ 308 ECM

Size (mm) : 40x90x23

Brand : SKF

Bore Diameter (mm) : 40

Outer Diameter (mm) : 90

Width (mm) : 23

Bearing dimensions and specification in SKF catalogue:

d - 40 mm

D - 90 mm

B - 23 mm

d₁ - - 57.5 mm

D₁ - - 75 mm

F - 52 mm

r_1,2 - min. - 1.5 mm

r_3,4 - min. - 1.5 mm

s - 1.4 mm

d_a - min. - 48 mm

d_a - max. - 50 mm

d_b - min. - 60 mm

D_a - max. - 81.8 mm

r_a - max. - 1.5 mm

Basic dynamic load rating - C - 93 kN

Basic static load rating - C₀ - 78 kN

Fatigue load limit - P_u - 10.2 kN

Reference speed - 8000 r/min

Limiting speed - 9500 r/min

Calculation factor - k_r - 0.15

Mass bearing - 0.789 kg

Designation

Bore Dia, mm

Outer Dia, mm: