Bearing NNU 4948 BK/SPW33 (SKF)

Cylindrical roller bearings, double row, super-precision NNU 4948 BK/SPW33

Bearing number : NNU 4948 BK/SPW33

Size (mm) : 240x320x80

Brand : SKF

Bore Diameter (mm) : 240

Outer Diameter (mm) : 320

Width (mm) : 80

Bearing dimensions and specification in SKF catalogue:

d - 240 mm

D - 320 mm

B - 80 mm

D₁ - 292.2 mm

F - 265.3 mm

b - 11.1 mm

K - 3 mm

r_1,2 - min. - 2.1 mm

r_3,4 - min. - 1.1 mm

s - 3.7 mm

d_a - min. - 251 mm

d_a - max. - 262 mm

D_a - max. - 309 mm

r_a - max. - 2 mm

d_n - 267 mm

Basic dynamic load rating - C - 528 kN

Basic static load rating - C₀ - 1220 kN

Fatigue load limit - P_u - 118 kN

Limiting speed for grease lubrication - 2200 r/min

Limiting speed for oil lubrication - 2600 mm/min

G_ref - 171 cm

Mass bearing - 17.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: