NRT 460 AAxial-radial cylindrical super-precision roller bearing

SKU: NRT 460 AAxial-radial cylindrical super-precision roller bearing

Axial-radial cylindrical super-precision roller bearings can accommodate radial loads, axial loads in both directions and moment loads, whether acting singly, or simultaneously, in any combination. With high running accuracy, high load capacity and rigidity, SKF super-precision axial radial cylindrical roller bearings are ideal for rotary tables, indexing heads, and multi spindle heads. The bearing minimizes noise, vibration and heat generation.

ID:100343

Dimensions - NRT 460 ADimensions - NRT 460 A

Dimensions

d
460 mm
Bore diameter
D
600 mm
Outside diameter
H
70 mm
Height
d1
560 mm
Shoulder diameter inner ring – large shoulder
C
22 mm
Outer ring (housing washer) width
H1
46 mm
Distance
J
482 mm
Inner ring (shaft/locating washer) hole pitch circle diameter
J1
580 mm
Outer ring (housing washer) hole pitch circle diameter
N
9.3 mm
Inner ring (shaft/locating washer) through hole
N1
15 mm
Inner ring (shaft washer) sinkhole
N2
9.3 mm
Outer ring (housing washer) through hole
a
8.2 mm
Inner ring (shaft washer) sinkhole depth
r1
min. 1 mm
Outer ring (housing washer) chamfer dimension
r2
min. 1 mm
Chamfer dimension

Calculation data

Basic dynamic load rating – radial direction C
201 kN
Basic static load rating – radial direction C0
765 kN
Basic dynamic load rating – axial direction C
180 kN
Basic static load rating – axial direction C0
2 240 kN
Attainable speed for grease lubrication
80 r/min
Attainable speed for oil-air lubrication
160 r/min
Axial preload
16 kN
Axial unloading force
34 kN
Frictional moment CRL
70 N·m
Axial stiffness for preload A (sets of two brgs back-to-back or face-to-face)
38 500 000 kN/µm
Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face)
12 100 000 kN/µm
Moment stiffness
1 036 kN·m/mrad

Mass

Mass bearing
45 kg

Rotary table

Guideline rotary table diameter
1 000 mm

Mounting information

Retaining bolts
Size
M8
Number of bolts
2
Angle between bolts
180 °
Removal threads
Size G
M12
Number of threads
3
Angle between threads
120 °
Required attachment bolts, shaft
Bolt size
M8
Pitch α
7.5 °
Number of bolts
46
Number of bolts omitted at retaining bolts position
2, 180° apart
Tightening torque (Bolt grade 10.9)
34 N·m
Required attachment bolts, housing
Bolt size
M8
Pitch α
7.5 °
Number of bolts
45
Number of bolts omitted at removal thread position
3, 120° apart

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