Bearings, units and housings -- Super-precision bearings -- Axial-radial cylindrical roller bearings -- Axial-radial cylindrical roller bearings, super-precision -- SKF NRT 120 B

NRT 120 B

Dimensions

d		120	mm
D		210	mm
H		40	mm
d₁		184	mm
C		12	mm
H₁		26	mm
J		135	mm
J₁		195	mm
N		7	mm
N₁		11	mm
N₂		7	mm
a		6.2	mm
r₁	min.	0.6	mm
r₂	min.	0.3	mm

Calculation data

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
Attainable speed for grease lubrication		230	r/min
Attainable speed for oil-air lubrication		460	r/min
Axial preload		2	kN
Axial unloading force		4.4	kN
Frictional moment	C_RL	6	N·m
Axial stiffness		8.5	kN/µm
Radial stiffness		4.5	kN/µm
Moment stiffness		23	kN·m/mrad

Mass

Mass bearing

4.8

Rotary table

Guideline diameter

315

Mounting information

Retaining bolts
Size		M6
Number of bolts		2
Angle between bolts		180	°
Removal threads
Size	G	M8
Number of threads		3
Angle between threads		120	°
Required attachment bolts, shaft
Bolt size		M6
Pitch	a	15	°
Number of bolts		22
Number of bolts omitted at retaining bolts position		2, 180° apart
Tightening torque (Bolt grade 10.9)		14	N·m
Required attachment bolts, housing
Bolt size		M6
Pitch	a	15	°
Number of bolts		21
Number of bolts omitted at removal thread position		3, 120° apart

Model Number: NRT 120 B
Inner Diameter：120mm Outer Diameter：210mm Width：40mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Super-precision bearings Axial-radial cylindrical roller bearings Axial-radial cylindrical roller bearings, super-precision
Details： Axial-radial cylindrical roller bearings, super-precision
Update date：2021-06-04
Application:drawing die,Broadcasting System,natural instruments,boring bar boring bar,historical instruments,Textile Accessories,chromatography,inorganic chemical,medical equipment,machine lathe,Broadcasting System
Similar models:1204 EKTN9 + H 204 IR 120x130x30 GE 120 ES PCM 140145120 E AXK 90120 11204 ETN9 C 4120 V/VE240 51202 V/HR11T1 51206 V/HR11Q1 PBM 6075120 M1G1
BEARING POWER International Trading Co.,Ltd. specialize in NRT120B products，there is large inventory of SKF NRT 120 B Axial-radial cylindrical roller bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the NRT 120 B Which SKF NRT120B is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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