NRT 100 BAxial-radial cylindrical super-precision roller bearing

SKU: NRT 100 BAxial-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:100329

Dimensions - NRT 100 BDimensions - NRT 100 B

Dimensions

d
100 mm
Bore diameter
D
185 mm
Outside diameter
H
38 mm
Height
d1
160 mm
Shoulder diameter inner ring – large shoulder
C
12 mm
Outer ring (housing washer) width
H1
25 mm
Distance
J
112 mm
Inner ring (shaft/locating washer) hole pitch circle diameter
J1
170 mm
Outer ring (housing washer) hole pitch circle diameter
N
5.6 mm
Inner ring (shaft/locating washer) through hole
N1
10 mm
Inner ring (shaft washer) sinkhole
N2
5.6 mm
Outer ring (housing washer) through hole
a
5.4 mm
Inner ring (shaft washer) sinkhole depth
r1
min. 0.6 mm
Outer ring (housing washer) chamfer dimension
r2
min. 0.3 mm
Chamfer dimension

Calculation data

Basic dynamic load rating – radial direction C
58.3 kN
Basic static load rating – radial direction C0
116 kN
Basic dynamic load rating – axial direction C
68 kN
Basic static load rating – axial direction C0
400 kN
Attainable speed for grease lubrication
280 r/min
Attainable speed for oil-air lubrication
560 r/min
Axial preload
1.8 kN
Axial unloading force
3.8 kN
Frictional moment CRL
3 N·m
Axial stiffness for preload A (sets of two brgs back-to-back or face-to-face)
7 500 000 kN/µm
Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face)
3 700 000 kN/µm
Moment stiffness
15 kN·m/mrad

Mass

Mass bearing
3.8 kg

Rotary table

Guideline rotary table diameter
260 mm

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 α
20 °
Number of bolts
16
Number of bolts omitted at retaining bolts position
2, 180° apart
Tightening torque (Bolt grade 10.9)
8.5 N·m
Required attachment bolts, housing
Bolt size
M5
Pitch α
20 °
Number of bolts
15
Number of bolts omitted at removal thread position
3, 120° apart

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