NRT180B SKF bearing

Axial-radial cylindrical roller bearings, super-precision NRT 180 B

Bearing number : NRT 180 B

Size (mm) : 180x280x43

Brand : SKF

Bore Diameter (mm) : 180

Outer Diameter (mm) : 280

Width (mm) : 43

Bearing dimensions and specification in SKF catalogue:

d - 180 mm

D - 280 mm

H - 43 mm

d₁ - 244 mm

C - 15 mm

H₁ - 29 mm

J - 194 mm

J₁ - 260 mm

H - 7 mm

N₁ - 11 mm

N₂ - 7 mm

a - 6.2 mm

r₁ - min. - 0.6 mm

r₂ - min. - 0.3 mm

Basic dynamic load rating, radial direction - C - 89.7 kN

Basic static load rating, radial direction - C₀ - 236 kN

Basic dynamic load rating, axial direction - C - 80 kN

Basic static load rating, axial direction - C₀ - 560 kN

Limiting speed for grease lubrication - 190 r/min

Limiting speed for oil lubrication - 380 mm/min

Axial Preload - 2.6 N

Axial unloading force - 5.6 kN

Frictional moment - C_RL - 13 N·m

axial stiffness - 10.6 N/micron

radial stiffness - 5.8 N/micron

Moment stiffness - 54000 kN·m/mrad

Mass bearing - 7.5 kg

Guideline diameter - 400 mm

Size - G - M8

Number of bolts - 3

Angle between bolts - 120 °

Size bolts - M6

Pitch - &alfa; - 7.5 °

Number of bolts - 45

Number of bolts omitted at removal thread position - 3, 120° apart

Size bolts - M6

Pitch - &alfa; - 7.5 °

Number of bolts - 46

Number of bolts omitted at retaining bolts position - 2, 180° apart

Tightening torque - 14 N·m

Size - M6

Number of bolts - 2