When your industrial equipment demands exceptional precision and load capacity in confined spaces, the XU Series Cross Roller Bearing delivers the performance you need. These advanced bearing units feature cylindrical rollers arranged in a 90-degree cross configuration within V-shaped raceways, providing simultaneous radial, axial, and moment load support. This unique design makes the product an ideal solution for robotics, machining centers, and precision instruments where space optimization and rigidity are critical requirements.

Structural Configuration
The XU Series features a monolithic design where both inner and outer rings are manufactured as integral units without division. This approach eliminates the structural weaknesses found in split-ring designs.
Cylindrical rollers are positioned orthogonally across V-groove raceways, creating line contact surfaces. This configuration distributes loads evenly across the bearing while maintaining high rigidity.
Isolation blocks prevent roller inclination and friction between adjacent rollers. This design ensures consistent torque characteristics throughout the bearing's operational life.
Working Principle
The 90-degree cross arrangement allows each roller to support different load directions. When combined loads are applied, the bearing distributes forces across multiple contact points.
The V-shaped raceway geometry creates optimal contact angles for handling complex loading conditions. This design principle enables the bearing to maintain precise positioning under varying operational stresses.
Pre-set mounting holes on the end faces eliminate the need for additional presser flanges or housing components, simplifying installation procedures.
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Bearing Designations
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Boundary Dimensions(mm)
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Basic Load Rating(Axial)
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Basic Load Rating(Radial)
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Weight(kg)
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|||||
|
|
d
|
D
|
dp
|
width
|
Ca
KN
|
Coa
KN
|
Gr
KN
|
Cor
KN
|
|
|
XU050077
|
40
|
112
|
77
|
22
|
22.4
|
29
|
14.3
|
14.2
|
1.4
|
|
XU060094
|
57
|
140
|
94
|
26
|
32.5
|
37.5
|
20.7
|
18.4
|
2.4
|
|
XU060111
|
76.2
|
145.79
|
111
|
15.87
|
36
|
44.5
|
22.8
|
21.5
|
1.2
|
|
XU080120
|
69
|
170
|
120
|
30
|
56
|
53
|
35.5
|
26
|
4
|
|
XU080149
|
101.6
|
196.85
|
149.6
|
22.22
|
63
|
66
|
40
|
32.5
|
3.6
|
|
XU120179
|
124.5
|
234
|
179
|
35
|
118
|
179
|
75
|
88
|
7
|
|
XU120222
|
140
|
300
|
222
|
36
|
133
|
275
|
85
|
121
|
12
|
|
XU160260
|
191
|
329
|
260
|
46
|
212
|
350
|
135
|
173
|
16
|
|
XU080264
|
215.9
|
311
|
264
|
25.4
|
85
|
117
|
54
|
57
|
6.9
|
|
XU160405
|
336
|
474
|
405
|
46
|
270
|
550
|
172
|
270
|
25
|
|
XU080430
|
380
|
480
|
430
|
26
|
110
|
280
|
70
|
138
|
12
|
|
XU300515
|
384
|
646
|
515
|
86
|
720
|
1370
|
455
|
670
|
115
|
Load Handling Capabilities
The XU Series Cross Roller Bearing excels in applications requiring simultaneous multi-directional load support. The cross-roller arrangement provides high radial and axial load ratings within a compact profile.
Minute stack capacity is especially upgraded due to the wide viable bearing span made by the roller dissemination. This characteristic is fundamental for applications including cantilevered loads or off-center forces.
Precision and Accuracy
Runout exactness remains reliable due to the indispensably ring development. Fabricating resiliences are kept up over the whole bearing circumference without the dimensional varieties inalienable in gathered designs.
Low grinding coefficients result from optimized roller-to-raceway contact geometry. This diminishes warm era and keeps up dimensional solidness amid operation.
Installation Benefits
Direct end-face mounting through pre-machined gaps diminishes establishment complexity. You can mount the bearing specifically to your hardware without extra components.
The compact plan spares important space in your application whereas giving prevalent stack appraisals compared to ordinary bearing arrangements.
Robotics and Automation
Industrial robot joints advantage from the XU Series' capacity to handle complex stacking whereas keeping up exact situating. The bearing's compact profile suits space-constrained mechanical applications.
Collaborative robot wrists require the smooth operation and moo contact characteristics that these orientation provide.
Machining Equipment
Rotary tables in machining centers depend on the tall inflexibility and accuracy capabilities of cross roller orientation. The item keeps up precision beneath cutting loads.
Precision rotating tables accomplish repeatable situating through the bearing's great runout characteristics.
Medical and Research facility Equipment
Medical imaging gear requires the moo clamor and smooth operation that these heading provide. Vibration control is basic for picture quality.
Measuring rebellious advantage from the dimensional steadiness and exactness maintenance of the XU Arrangement design.
Our XU Arrangement orientation utilize premium Gcr15 and Gcr15SiMn bearing steels. These materials experience specialized warm treatment forms to accomplish ideal hardness and wear resistance.
Precision pounding innovation guarantees steady surface wraps up over all contact surfaces. This consideration to detail amplifies bearing life and keeps up execution characteristics.

We keep up a comprehensive three-level quality control framework covering crude fabric review, in-process confirmation, and wrapped up item testing. Each bearing experiences approval of 12 center execution indicators.
Vibration testing and life testing confirm that each item meets indicated execution benchmarks some time recently shipment.
With 30 years of bearing industry experience, our technical team provides comprehensive application support. We assist with bearing selection, installation guidance, and maintenance planning.
Our engineering capabilities extend to custom modifications when standard configurations don't meet your specific requirements.
For technical consultation or product inquiries regarding XU Series Cross Roller Bearing solutions, contact our engineering team at auto@lyautobearing.com. We provide detailed application analysis and recommend optimal bearing configurations for your specific operating conditions.
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