Product Overview
The crossed roller bearing XSU080218 is a high-precision turntable bearing designed for demanding applications where accuracy and rigidity are critical. With crossed cylindrical rollers arranged at right angles, the bearing can simultaneously support axial, radial, and overturning moment loads.
Key Features and Benefits
- High Rigidity & Accuracy: Crossed rollers maximize stiffness, ensuring stable and precise performance.
- Compact Structure: The integrated mounting design saves space and simplifies assembly.
- Multi-Directional Load Capacity: One bearing handles axial, radial, and moment loads, reducing the need for multiple bearings.
- Smooth Operation: Precision ground raceways minimize vibration, ensuring reliable rotation.
- Durability: High-quality materials provide long service life under demanding conditions.
Comparison of Crossed Roller Bearings
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| Model number | XSU080168 | XSU080188 | XSU080218 | XSU080258 |
| inner ring d | 130mm | 150mm | 180mm | 220mm |
| outer ring D | 205mm | 225mm | 225mm | 295mm |
| width B | 25.4mm | 25.4mm | 25.4mm | 25.4mm |
| NB | 12 | 16 | 20 | 24 |
| chamfer | 1.1 | 1.1 | 1.1 | 1.5 |
| ΦLa | 190 | 210 | 240 | 280 |
| ΦLi | 145 | 165 | 195 | 235 |
| limiting speed | 227 r/min | 203 r/min | 175 r/min | 148r/min |
| weight | 3.3kg | 3.7kg | 4.3kg | 5.1kg |
Surface Treatment Options
To enhance corrosion resistance, wear protection, and service life, the outer surface of XSU080218 can be customized with different surface treatments:
Phosphate Coating:
Provides basic corrosion resistance and improved adhesion for lubrication.
Suitable for general industrial machinery.
Nickel Plating:
Offers excellent anti-corrosion properties and smoother surface finish.
Recommended for medical imaging equipment, clean room robotics, and marine environments.
Black Oxide Treatment:
Improves wear resistance and reduces light reflection.
Common in aerospace, defense, and precision optical devices.
Hard Chrome Plating:
Increases surface hardness and wear resistance under heavy load.
Ideal for machine tools and heavy-duty rotary platforms.
Frequently Asked Questions (FAQs)
How to install XSU080218 crossed roller bearing correctly?
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Installation should be performed on a clean, dust-free surface. Align the mounting holes on the inner and outer rings, tighten bolts diagonally in sequence, and apply the recommended preload if necessary. Always check for smooth rotation after assembly.
What preload adjustment options are available for XSU080218?
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The XSU080218 crossed roller bearing can be preloaded by tightening bolts according to manufacturer guidelines. Proper preload reduces clearance, improves rigidity, and enhances positioning accuracy in rotary tables and robotics.
What is the difference between XSU080218 and smaller models like XSU080188?
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While both belong to the same crossed roller bearing series, XSU080218 (160x295x35 mm) offers higher load ratings and greater rigidity compared to XSU080188 (120x183x22 mm). Selection depends on required load capacity and application size.
Is preload adjustment available for XSU080218?
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Yes, the bearing can be preloaded to reduce clearance and improve rotational accuracy.
How should XSU080218 be lubricated?
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Both grease and oil lubrication are suitable. Regular lubrication ensures long service life.
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