P5 P4 P2 RB3010 Crossed Roller Slewing Bearing THK 30 X 55 X 10 Mm RB3010UUCC0

1. Core Structure of Cross Roller Bearings

• Outer Ring & Inner Ring: Typically made of chromium bearing steel for high hardness and wear resistance. One ring has a full raceway, while the other has a split structure (fixed with bolts) for easy assembly.
• Cylindrical Rollers: Arranged alternately at 90° between the inner and outer rings. They directly contact the raceways, reducing deformation under load and improving rigidity.
• Spacers/Retainers: Separate individual rollers to prevent friction and collision, ensuring smooth rotation and extending service life.
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2. Key Performance Characteristics

• High Rigidity: The cross roller arrangement and tight fit between rollers and raceways minimize elastic deformation, making them ideal for precision positioning.
• Multi-Load Capacity: Can withstand radial loads, axial loads (both directions), and moment loads (tilting moments) in a single bearing, simplifying mechanical design.
• Low Friction & High Precision: Direct roller-raceway contact reduces sliding friction, while strict manufacturing tolerances (often up to P5 or P4 class) ensure high rotational accuracy.
• Compact Size: Integrates multi-load functionality into a single unit, reducing the overall volume of equipment compared to combinations of multiple bearings.
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3. Typical Applications

Industrial Machinery: Robot joints (e.g., robotic arms), precision machine tools (spindles, turntables), and indexing tables.

• Optical & Measuring Equipment: Optical inspection machines, laser measuring instruments, and semiconductor lithography equipment.
• Medical Devices: CT scanners, surgical robots, and precision diagnostic equipment.
• Aerospace & Defense: Satellite antennas, radar turntables, and guidance system components.
• Transportation: High-precision rotating parts in electric vehicles (e.g., steering systems) and railway inspection equipment.

4. Below list for RB Series Crossed Roller Bearings: