Bearing NNU 4976 BK/SPW33 (SKF)

Cylindrical roller bearings, double row, super-precision NNU 4976 BK/SPW33

Bearing number : NNU 4976 BK/SPW33

Size (mm) : 380x520x140

Brand : SKF

Bore Diameter (mm) : 380

Outer Diameter (mm) : 520

Width (mm) : 140

Bearing dimensions and specification in SKF catalogue:

d - 380 mm

D - 520 mm

B - 140 mm

D₁ - 470.8 mm

F - 426 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. - 395 mm

d_a - max. - 421 mm

D_a - max. - 505 mm

r_a - max. - 3 mm

Basic dynamic load rating - C - 1450 kN

Basic static load rating - C₀ - 3600 kN

Fatigue load limit - P_u - 320 kN

Limiting speed for grease lubrication - 1300 r/min

Limiting speed for oil lubrication - 1500 r/min

Mass bearing - 83.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: