NRT120B SKF bearing

Bearing NRT 120 B Bearing NRT 120 B

Axial-radial cylindrical roller bearings, super-precision NRT 120 B

Bearing number : NRT 120 B

Size (mm) : 120x210x40

Brand : SKF

Bore Diameter (mm) : 120

Outer Diameter (mm) : 210

Width (mm) : 40

Bearing dimensions and specification in SKF catalogue:

d - 120 mm

D - 210 mm

H - 40 mm

d1 - 184 mm

C - 12 mm

H1 - 26 mm

J - 135 mm

J1 - 195 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 - 64.4 kN

Basic static load rating, radial direction - C0 - 140 kN

Basic dynamic load rating, axial direction - C - 72 kN

Basic static load rating, axial direction - C0 - 450 kN

Limiting speed for grease lubrication - 230 r/min

Limiting speed for oil lubrication - 460 mm/min

Axial Preload - 2 N

Axial unloading force - 4.4 kN

Frictional moment - CRL - 6 N·m

axial stiffness - 8.5 N/micron

radial stiffness - 4.5 N/micron

Moment stiffness - 23000 kN·m/mrad

Mass bearing - 4.8 kg

Guideline diameter - 315 mm

Size - G - M8

Number of bolts - 3

Angle between bolts - 120 °

Size bolts - M6

Pitch - &alfa; - 15 °

Number of bolts - 21

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

Size bolts - M6

Pitch - &alfa; - 15 °

Number of bolts - 22

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

Tightening torque - 14 N·m

Size - M6

Number of bolts - 2

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