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RU Cross roller bearings

【Time:2012-07-13】【Sources:The station】【Author:Administrator】【Click:2872】

RU Cross roller bearings

With the Cross-Roller Ring, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90V groove, separated from each other by a spacer retainer.  This design allows just one bearing to receive loads in all directions including, radial, axial and moment loads. Since the Cross-Roller Ring achieves high rigidity despite the minimum possible dimensions of the inner and outer rings, it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines.
Bearing features:
1.     High precision: precision at P4, P2.
2.     High rigidity: this series bearings are with preload.
3.     High load capacity: this series bearings can support axial load, radial load, and tilting load.
4.     Small volume: this series bearings can save space for the machine.
Application scope:
Crossed cylindrical roller bearings are widely applied in the precision rotary table, rotary joint of manipulator, medical equipment, and measuring instrument etc.

RU series(Integrated Inner/Outer Ring type)

        Since the mounting holes are provided, the model does not require a presser flange or housing. In addition, because it has an integrated inner/outer ring structure and is equipped with washers, its performance is minimally affected by the mounting procedure, ensuring stable rotation accuracy and torque. 

This model can be used for both inner-ring rotation and outer-ring rotation.
shaft diameter
Identification number( Click on the following types and check  the details of products)
Main dimensions
Shoulder height
Basic load rating(radial)
weight
inner
ring
d
outer
 ring
D
Roller pitch circle diameter dp
width
β
Greasing holed1
rmin
ds
Dh
C
kN
Co
kN
kg
20
20
70
41.5
12
3.1
0.6
37
47
7.35
8.35
0.29
35
35
95
66
15
3.1
0.6
59
74
17.5
22.3
0.62
55
55
120
85
15
3.1
0.6
79
93
20.3
29.5
1
80
80
165
124
22
3.1
1
114
134
33.1
50.9
2.6
90
90
210
147.5
25
3.1
1.5
133
162
49.1
76.8
4.9
115
115
240
178
28
3.1
1.5
161
195
80.3
135
6.8
160
160
295
227.5
35
6
2
208
246
104
172
11.4
210
210
380
297.3
40
6
2.5
272
320
156
281
21.3
350
350
540
445.4
45
6
2.5
417
473
222
473
35.4


Remark:As for RU series,lubricating nipple can be selected
IF you need,Please adding -N in the end of model automatically.
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