Bearing NNU 4980 BK/SPW33 (SKF)

Cylindrical roller bearings, double row, super-precision NNU 4980 BK/SPW33

Bearing number : NNU 4980 BK/SPW33

Size (mm) : 400x540x140

Brand : SKF

Bore Diameter (mm) : 400

Outer Diameter (mm) : 540

Width (mm) : 140

Bearing dimensions and specification in SKF catalogue:

d - 400 mm

D - 540 mm

B - 140 mm

D₁ - 490.8 mm

F - 446 mm

b - 16.7 mm

K - 9 mm

r_1,2 - min. - 4 mm

r_3,4 - min. - 2.5 mm

s - 5.5 mm

d_a - min. - 415 mm

d_a - max. - 441 mm

D_a - max. - 524 mm

r_a - max. - 3 mm

Basic dynamic load rating - C - 1470 kN

Basic static load rating - C₀ - 3800 kN

Fatigue load limit - P_u - 335 kN

Limiting speed for grease lubrication - 1300 r/min

Limiting speed for oil lubrication - 1500 r/min

Mass bearing - 87.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: