RA cross roller bearing
Brand: PRS
Category: Bearing
Seal: Double-sided seal
Size: Inner diameter 50mm-200mm
Thickness: 8mm-13mm
- Product Description
RA Cross Roller Bearing - Ultra-Thin High-Precision Solution for Space-Critical Applications
When you need maximum load capacity in minimal space, the RA cross roller bearing delivers the engineering solution your application demands. This ultra-thin, high-precision bearing combines spiral, pivotal, and minute stack dealing with in a single compact unit. The RA arrangement highlights an coordinates internal ring plan with divisible external ring development, making it perfect for applications where space imperatives and weight decrease are basic variables in your hardware design.
What is RA Cross Roller Bearing?
The item speaks to a specialized ultra-thin bearing plan that addresses the most demanding space and weight imperatives in advanced mechanical hardware. This bearing sort highlights round and hollow rollers organized orthogonally in 90-degree V-groove raceways, isolated by accuracy spacers.
The special crossed roller arrangement permits your gear to handle numerous stack bearings at the same time. Not at all like routine bearing courses of action that require isolated outspread and pushed orientation, this single bearing unit oversees spiral, pivotal, and minute loads effectively.
The "RA" assignment shows the ultra-thin divider arrangement plan. You get altogether diminished cross-sectional stature compared to standard bearing setups. The inward ring keeps up an coordinates strong structure, whereas the external ring highlights divisible development for rearranged establishment and maintenance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Inner Diameter | 20-350mm |
| Outer Diameter | 70-540mm |
| Width | 12-45mm |
| Material | GCr15, GCr15SiMn |
| Precision Class | P6, P0, P5, P4, P3 |
| Ring Configuration | Integrated inner ring, separable outer ring |
| Load Capacity | Radial, axial, and moment loads |
Design Features and Working Principle
Crossed Roller Configuration
The center plan guideline centers on rotating round and hollow rollers situated at 90-degree points inside precision-machined V-groove raceways. This orthogonal course of action disperses loads over different contact focuses, maximizing stack capacity whereas keeping up compact dimensions.
Separable Outer Ring Design
The external ring divisible development streamlines your establishment prepare. You can position the internal ring get together to begin with, at that point introduce the external ring areas. This plan decreases gathering complexity and gives superior get to for support procedures.
Ultra-Thin Profile
The RA arrangement accomplishes uncommon space proficiency through optimized ring geometry. Divider thickness diminishment comes to the down to earth designing limits whereas keeping up basic astuteness and stack capacity requirements.

Performance Advantages
Multi-Directional Load Handling
You eliminate the need for complex bearing arrangements when using RA cross roller bearing. A single bearing unit replaces multiple conventional bearings, simplifying your design and reducing overall system weight.
High Rigidity and Precision
The crossed roller design provides superior rigidity compared to ball bearings. You achieve better positioning accuracy and reduced deflection under load conditions. Running accuracy meets P4 and P3 precision classes for demanding applications.
Low Friction Operation
The cylindrical roller contact geometry reduces friction coefficients compared to point contact designs. Your equipment benefits from smoother rotation, reduced heat generation, and improved energy efficiency.
Compact Installation
The ultra-thin profile allows integration into space-constrained designs. You can achieve significant equipment downsizing without compromising load capacity or operational performance.
Industrial Applications
Robotics and Automation
Industrial robot joints and rotating assemblies benefit from the compact design and multi-directional load capacity. The product handles the complex load combinations typical in robotic arm movements.
Machine Tool Equipment
Rotary tables and indexing mechanisms in machining centers require precise positioning and high rigidity. These bearings provide the accuracy and load capacity needed for precision manufacturing operations.
Medical Equipment
Medical imaging devices and surgical equipment demand smooth, precise motion with minimal backlash. The low friction and high accuracy characteristics support critical medical applications.
Precision Instruments
Measuring equipment and optical devices require stable, vibration-free rotation. The high rigidity and precision class options meet stringent accuracy requirements.
Quality and Manufacturing Excellence
Advanced Production Capabilities
At Luoyang Precision Bearing Co., Ltd., our 15,000 m² manufacturing facility houses over 200 high-precision machines dedicated to bearing production. Our 35-member technical engineering team ensures consistent quality and continuous improvement in bearing design.
Rigorous Quality Control
We maintain factory pass rates exceeding 99.9% through comprehensive quality control processes. Every bearing undergoes full inspection from raw material verification through final testing.
Certification Standards
Our manufacturing processes comply with ISO 9001, ISO 14001, and ISO 45001 standards. Products meet CE and RoHS requirements for global market compliance.
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.

Technical Support and Customization
We provide comprehensive technical support for bearing selection and application optimization. Our engineering team can customize dimensions, precision classes, and materials to match your specific requirements.
Standard models ship within 24 hours from our extensive inventory. Custom solutions typically require 2-4 weeks depending on specification complexity.
For technical specifications, pricing information, or application consultation, contact our engineering team at ljh@lyprs.com. We're ready to help you optimize your RA cross roller bearing solution for maximum performance and reliability.











