The XU100140UU Precision Cross Roller Bearing represents an advanced engineering solution for applications requiring exceptional rigidity and precision in compact designs. This integrated cross-roller bearing features cylindrical rollers arranged at 90° angles within V-groove raceways, delivering superior load-handling capabilities compared to conventional ball bearings. The "XU" designation indicates integrated inner and outer ring construction with pre-drilled mounting holes, while the "UU" suffix denotes dual rubber seals for contamination protection. Engineers choose this bearing when space constraints and precision requirements make traditional bearing arrangements impractical.

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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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|||||
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d
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D
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dp
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width
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Ca
KN
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Coa
KN
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Gr
KN
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Cor
KN
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|
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XU050077
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40
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112
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77
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22
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22.4
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29
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14.3
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14.2
|
1.4
|
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XU060094
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57
|
140
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94
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26
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32.5
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37.5
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20.7
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18.4
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2.4
|
|
XU060111
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76.2
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145.79
|
111
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15.87
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36
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44.5
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22.8
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21.5
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1.2
|
|
XU080120
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69
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170
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120
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30
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56
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53
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35.5
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26
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4
|
|
XU080149
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101.6
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196.85
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149.6
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22.22
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63
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66
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40
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32.5
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3.6
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|
XU120179
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124.5
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234
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179
|
35
|
118
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179
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75
|
88
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7
|
|
XU120222
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140
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300
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222
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36
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133
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275
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85
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121
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12
|
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XU160260
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191
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329
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260
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46
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212
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350
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135
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173
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16
|
|
XU080264
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215.9
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311
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264
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25.4
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85
|
117
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54
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57
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6.9
|
|
XU160405
|
336
|
474
|
405
|
46
|
270
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550
|
172
|
270
|
25
|
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XU080430
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380
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480
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430
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26
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110
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280
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70
|
138
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12
|
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XU300515
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384
|
646
|
515
|
86
|
720
|
1370
|
455
|
670
|
115
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Cross-Roller Configuration
The bearing employs cylindrical rollers positioned perpendicular to each other at 90° intervals. This arrangement creates line contact with the V-shaped raceway surfaces, distributing loads more effectively than point contact systems. Spacer blocks separate adjacent rollers, preventing skewing and maintaining consistent torque throughout rotation.
Integrated Ring Design
Both inner and outer rings feature solid, undivided construction that maximizes structural rigidity. Pre-machined mounting holes eliminate the need for separate housings or clamping arrangements, reducing assembly complexity and part count while improving concentricity.
Dual Sealing System
The "UU" configuration incorporates synthetic rubber lip seals on both bearing faces. These seals retain pre-applied grease while excluding dust, moisture, and other contaminants that could compromise performance in demanding environments.
Multi-Directional Load Capacity
The XU100140UU Precision Cross Roller Bearing simultaneously handles radial, axial, and moment loads within a single unit. This eliminates the need for multiple bearing arrangements, reducing design complexity and potential failure points in precision machinery.
Improved Rigidity
Line contact between rollers and raceways gives 3-4 times more noteworthy inflexibility compared to precise contact ball heading. This expanded solidness minimizes flexible distortion beneath stack, keeping up situating precision in high-precision applications.
Compact Installation
Direct mounting capability through coordinates gaps diminishes pivotal space prerequisites by up to 30% compared to customary bearing courses of action requiring partitioned lodgings or mounting flanges.
Industrial Robotics
Robotic joint congregations utilize these heading for supporting tall minute loads created amid arm expansion and turn. The compact plan decreases generally robot weight whereas keeping up the firmness fundamental for tedious situating accuracy.
Precision Machine Tools
CNC rotational tables and ordering frameworks utilize these heading to withstand cutting powers and vibrations amid metal expulsion operations. The disposal of extra mounting components maximizes accessible workspace for workpiece positioning.
Medical Equipment
CT scanner gantries and X-ray situating tables advantage from the smooth turn and defilement security given by the double seal plan, guaranteeing artifact-free imaging comes about in sterile environments.
Semiconductor Manufacturing
IC manufacture gear requires the ultra-high exactness and cleanliness measures that the item conveys, supporting basic situating frameworks in lithography and assessment processes.
The coordinates mounting gaps acknowledge standard jolts for coordinate connection to mating surfaces. Appropriate establishment requires uniform jolt torque application to anticipate ring mutilation. The fixed plan gives maintenance-free operation beneath ordinary conditions, with oil recharging interims of 6-12 months in high-speed or hoisted temperature applications.
Our 30-year fabricating mastery guarantees steady quality through comprehensive testing conventions. Each item experiences vibration examination, dimensional confirmation, and life cycle approval some time recently shipment. Our three-level quality control framework keeps up an ex-factory capability rate surpassing 99.9%.

Luoyang Auto Bearing provides complete technical support for XU100140UU Precision Cross Roller Bearing selection, installation guidance, and application optimization. Standard inventory enables 48-hour delivery for immediate requirements, while our streamlined production processes accommodate custom specifications with shortened lead times.
For technical specifications, application guidance, or ordering information, contact our engineering team at auto@lyautobearing.com. Our experienced staff provides comprehensive support for your precision motion control requirements.
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