Model XSU:Since the mounting holes are provided,XSU080168crossed roller bearingdoes 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.
Identifi -cation number
Main dimensions
Basic load rating (axial)
Basic load rating(radial)
Limiting speed
weight
inner ring
d
(mm)
outer ring
D
(mm)
width
B(mm)
nB
Chamfer
r(min)
φLa
φLi
Ca
KN
C0a
KN
Cr
KN
Cor
KN
r/min
Kg
XSU080168
130
205
25.4
12
1.1
190
145
66
240
42
96
227
3.3
XSU080188
150
225
25.4
16
1.1
210
165
71
275
46
110
203
3.7
XSU080218
180
255
25.4
20
1.1
240
195
77
315
49
127
175
4.3
XSU080258
220
295
25.4
24
1.5
280
235
84
375
54
151
148
5.1
XSU080318
280
355
25.4
28
1.5
340
295
93
465
59
185
120
6.3
XSU080398
360
435
25.4
36
2
420
375
106
590
68
236
96
7.8
Structure features of XSU080168crossed roller bearing:
With the Crossed roller bearing, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90°V 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 Crossed Roller bearing achieves high rigidity and the precision can reach up to P4.P2,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.
Rotation accuracy:
The spacer retainer fitting among cross-arrayed rollers prevents rollers from skewing and the rotation torque from increasing due to friction between rollers. Unlike conventional types using steel sheet retainers, the XSU080168crossed roller bearing does not cause displacement or locking of rollers and provides a stable rotation torque. Since the inner and outer rings are designed to be separable, the bearing clearance can be adjusted. In addition, highly accurate rotary motion is ensured through adjusting the bearing clearance to provide a preload.
Usage characteristics
The inner and outer rings, which are separable, are secured to XSU080168crossed roller bearing body after the rollers and spacer retainers are installed. This procedure prevents the rings from separating from each other. Thus, it is easy to handle the rings when installing this type.
