Bearings, units and housings -- Super-precision bearings -- Axial-radial cylindrical roller bearings -- Axial-radial cylindrical roller bearings, super-precision -- SKF NRT 80 B

NRT 80 B

Dimensions

d		80	mm
D		146	mm
H		35	mm
d₁		130	mm
C		12	mm
H₁		23.35	mm
J		92	mm
J₁		138	mm
N		5.6	mm
N₁		10	mm
N₂		4.6	mm
a		4	mm
r₁	min.	0.3	mm
r₂	min.	0.3	mm

Calculation data

Basic dynamic load rating - radial direction	C	55	kN
Basic static load rating - radial direction	C₀	102	kN
Basic dynamic load rating - axial direction	C	37.5	kN
Basic static load rating - axial direction	C₀	200	kN
Attainable speed for grease lubrication		350	r/min
Attainable speed for oil-air lubrication		700	r/min
Axial preload		1.3	kN
Axial unloading force		2.8	kN
Frictional moment	C_RL	3	N·m
Axial stiffness		5	kN/µm
Radial stiffness		3.1	kN/µm
Moment stiffness		7	kN·m/mrad

Mass

Mass bearing

2.3

Rotary table

Guideline diameter

200

Mounting information

Retaining bolts
Size		M5
Number of bolts		2
Angle between bolts		180	°
Removal threads
Size	G	M5
Number of threads		3
Angle between threads		120	°
Required attachment bolts, shaft
Bolt size		M5
Pitch	a	30	°
Number of bolts		10
Tightening torque (Bolt grade 10.9)		8.5	N·m
Required attachment bolts, housing
Bolt size		M4
Pitch	a	30	°
Number of bolts		9
Tightening torque (Bolt grade 10.9)		4.5	N·m

Model Number: NRT 80 B
Inner Diameter：80mm Outer Diameter：146mm Width：35mm
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：2024-12-13
Application:rock drilling machinery,hook,Workpiece,garbage disposal,diagnostic test paper,Plastic Equipment,Tool,paint paint,Oral Equipment,Storage Tool,climb ladder
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