Bearing NNU 4921 B/SPW33 (SKF)

Cylindrical roller bearings, double row, super-precision NNU 4921 B/SPW33

Bearing number : NNU 4921 B/SPW33

Size (mm) : 105x145x40

Brand : SKF

Bore Diameter (mm) : 105

Outer Diameter (mm) : 145

Width (mm) : 40

Bearing dimensions and specification in SKF catalogue:

d - 105 mm

D - 145 mm

B - 40 mm

D₁ - 130.8 mm

F - 118 mm

b - 5.5 mm

K - 3 mm

r_1,2 - min. - 1.1 mm

s - 1.1 mm

d_a - min. - 111 mm

d_a - max. - 116 mm

d_b - min. - 121 mm

D_a - max. - 138.5 mm

r_a - max. - 1 mm

d_n - 119 mm

Basic dynamic load rating - C - 130 kN

Basic static load rating - C₀ - 260 kN

Fatigue load limit - P_u - 30 kN

Limiting speed for grease lubrication - 5300 r/min

Limiting speed for oil lubrication - 6000 mm/min

G_ref - 15 cm

Mass bearing - 2 kg

Designation

Bore Dia, mm

Outer Dia, mm: