RU Series Cross Roller Bearing
Brand: PRS
Category: Bearing
Mounting Hole: Yes
Inner Diameter: 10mm-350mm
Outer Diameter: 52mm-540mm
- Product Description
RU Series Cross Roller Bearing
When your applications demand ultra-high precision positioning with minimal space requirements, the RU Series Cross Roller Bearing delivers exceptional performance through its integrated design solution. This specialized bearing highlights mounting gaps specifically machined into both inward and external rings, killing conventional establishment blunders whereas supporting multi-directional loads at the same time. With its crossed roller arrangement, the item gives extraordinary inflexibility and exactness for requesting mechanical applications where space optimization meets accuracy requirements.
What is RU Series Cross Roller Bearing?
The RU Arrangement speaks to an progressed bearing plan that coordinating mounting gaps straightforwardly into the ring structure. This arrangement dispenses with the require for partitioned spines or lodgings, diminishing establishment complexity and keeping up geometric exactness all through the get together process.
The center plan highlights round and hollow rollers organized opposite to each other inside precision-machined V-groove raceways. This orthogonal roller course of action empowers the bearing to handle spiral loads, pivotal loads, and minute loads at the same time inside a single compact unit.
Structure and Working Principle
Integrated Ring Design
The RU Series Cross Roller Bearing Series features solid inner and outer rings with precisely positioned mounting holes. This integral construction prevents installation-induced deformation that commonly affects bearing performance in traditional designs.
Crossed Roller Configuration
Cylindrical rollers are situated at 90-degree points to each other, making a crossed design inside the raceway. This course of action disseminates loads equitably over numerous contact focuses, maximizing stack capacity whereas minimizing space requirements.
Precision Raceways
V-groove raceways give ideal roller direction and stack conveyance. The contact point geometry guarantees steady operation beneath changing stack conditions whereas keeping up steady revolution accuracy.

Technical Specifications
| Parameter | Specification |
|---|---|
| Inner Diameter Range | 20mm - 1100mm |
| Outer Diameter Range | 70mm - 1500mm |
| Width Range | 12mm - 110mm |
| Precision Classes | P6, P0, P5, P4, P2 |
| Material | GCr15, GCr15SiMn |
| Operating Temperature | -20°C to +120°C |
| Mounting Configuration | Integral holes in both rings |
Performance Advantages
Multi-Directional Load Support
The crossed roller design handles radial, axial, and moment loads within a single bearing unit. This eliminates the need for multiple bearing arrangements, reducing system complexity and space requirements.
High Rigidity
The orthogonal roller configuration provides superior rigidity compared to traditional ball bearings. This characteristic is essential for applications requiring precise positioning under varying loads.
Installation Accuracy
Direct mounting through integral holes maintains geometric precision throughout installation. This design prevents the accumulation of tolerances that typically occur with multi-component assemblies.
Low Friction Operation
Optimized roller geometry and surface treatments reduce friction coefficients, ensuring smooth rotation and extended service life. This characteristic is particularly valuable in precision positioning applications.
Compact Design
The ability to support multiple load directions within a single bearing reduces overall system envelope. This space efficiency is crucial in modern automation equipment where compactness is essential.
Applications
Industrial Robotics
Robot joints and rotating mechanisms benefit from the RU Series' ability to handle complex load combinations while maintaining positioning accuracy. The integrated mounting design simplifies robot assembly and maintenance procedures.
Machine Tool Rotary Tables
Machining center rotary tables require high rigidity and accuracy under cutting loads. The crossed roller configuration provides the necessary stiffness to maintain workpiece positioning during machining operations.
Medical Equipment
Precision medical devices utilize RU Series bearings in imaging systems and surgical robotics where smooth, accurate motion is critical for patient safety and diagnostic accuracy.
Semiconductor Manufacturing
IC manufacturing equipment demands ultra-high precision in contamination-sensitive environments. The sealed design and precision operation make RU Series bearings suitable for wafer handling and processing equipment.
Measurement Instruments
Precision measurement devices require stable, repeatable motion with minimal runout. The inherent accuracy and rigidity of cross roller bearings support measurement reliability.
Why Choose PRS® RU Series Cross Roller Bearing
Our 20+ years of precision bearing expertise ensures reliable performance in your critical applications. With 35 technical engineers and 200+ precision manufacturing machines, we maintain strict quality control throughout production.
Our comprehensive testing procedures verify each bearing meets specified tolerances before shipment. Large inventory of standard sizes enables rapid delivery, while our engineering team provides technical support for custom applications.
Quality certifications including ISO 9001, ISO 14001, and CE compliance demonstrate our commitment to consistent manufacturing standards. Our factory pass rate exceeds 99.9%, ensuring long-term operational reliability.
Packaging & shipping
Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution.

Certificaiton

Partners
Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Contact Information
For technical specifications, custom configurations, or application engineering support, contact our RU Series Cross Roller Bearing specialists at ljh@lyprs.com. Our team provides comprehensive solutions from initial selection through installation guidance and performance optimization.











