Bearing NNU 4956 BK/SPW33 (SKF)

Cylindrical roller bearings, double row, super-precision NNU 4956 BK/SPW33

Bearing number : NNU 4956 BK/SPW33

Size (mm) : 280x380x100

Brand : SKF

Bore Diameter (mm) : 280

Outer Diameter (mm) : 380

Width (mm) : 100

Bearing dimensions and specification in SKF catalogue:

d - 280 mm

D - 380 mm

B - 100 mm

D₁ - 345.6 mm

F - 312 mm

b - 13.9 mm

K - 3 mm

r_1,2 - min. - 2.1 mm

r_3,4 - min. - 1.1 mm

s - 4.5 mm

d_a - min. - 291 mm

d_a - max. - 308 mm

D_a - max. - 369 mm

r_a - max. - 2 mm

d_n - 313.5 mm

Basic dynamic load rating - C - 765 kN

Basic static load rating - C₀ - 1800 kN

Fatigue load limit - P_u - 170 kN

Limiting speed for grease lubrication - 1900 r/min

Limiting speed for oil lubrication - 2200 mm/min

G_ref - 384 cm

Mass bearing - 32.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: