Cross Roller Slewing Bearings: High-Precision Rotation with Maximum Rigidity
What is a Cross Roller Slewing Bearing?
A Cross Roller Slewing Bearing is a type of rotational bearing where cylindrical rollers are alternately arranged at 90° to each other between inner and outer rings. Unlike traditional ball bearings, the cross-roller configuration enables ultra-high stiffness, smooth motion, and precise load management in both axial and radial directions—plus tilting moments. This makes them especially suitable for applications that require compact size, minimal backlash, and excellent positioning accuracy.
Cross roller slewing bearings are often used in robotics, precision turntables, radar systems, and aerospace testing equipment.
Structural Advantages
Crossed Roller Design
The alternating 90° roller orientation allows the bearing to support loads in every direction—axial, radial, and moment—simultaneously.
High Rigidity and Minimal Deformation
Roller line contact ensures load is spread evenly across raceways, minimizing elastic deformation and enhancing operational precision.
Compact Profile with High Load Capacity
Despite its slim cross-section, this bearing type achieves exceptional stiffness and load-bearing capability.
Precision Rotation
Cross roller bearings maintain minimal runout and backlash, which is critical for automated machinery and motion control systems.
Multiple Mounting Options
Available with internal gear, external gear, or gearless configurations, as well as flanged and split-ring designs.
Application Scenarios
Industrial Robots and Welding Arms: For smooth, backlash-free movement in articulated joints.
Machine Tool Rotating Tables: Ensuring high positioning accuracy during complex machining.
Medical Equipment: In surgical robots and imaging systems where vibration-free motion is essential.
Aerospace Test Platforms: For structural and vibration analysis systems with high stability needs.
Radar and Satellite Dishes: Enabling stable tracking in precision positioning applications.
LDB’s Cross Roller Slewing Bearings
As a premium slewing bearing manufacturer, LDB designs and produces high-performance cross roller slewing bearings using ultra-precise machining, induction hardening, and roller preloading processes.
Key Technical Features:
Outer Diameter Range: 200 mm – 3500 mm
Roller Material: GCr15 precision-ground cylindrical rollers
Raceway Material: Forged and hardened 42CrMo or 50Mn
Sealing System: Contact and labyrinth seals for indoor/outdoor use
Lubrication: Pre-filled with grease, with optional oiling ports
LDB also offers preload customization, non-standard geometries, and hybrid ceramic roller solutions for demanding environments.
Pricing, Supplier, and Manufacturer Information
LDB is a globally trusted supplier and manufacturer of cross roller slewing bearings. Our products are backed by ISO 9001 certification, advanced testing, and rapid global logistics.
Pricing Influencers:
Roller diameter and quantity
Bearing size and gear configuration
Precision class and preload settings
Custom coating and corrosion protection options
Typical Price Range: USD $250 to $3500 depending on specifications.
Engineers and procurement teams can request 2D/3D CAD models, pricing, and engineering advice through www.ldb-bearing.com.
Why Choose LDB Cross Roller Bearings?
Extreme stiffness for zero-backlash systems
High-speed rotary performance
Custom load direction optimization
Fast prototyping and small-batch production for R&D
Extensive deployment in precision and robotic industries
LDB’s cross roller bearings are field-proven in medical imaging systems, semiconductor positioning, robotic actuators, and satellite tracking mechanisms.
Conclusion
Cross Roller Slewing Bearings are the go-to choice for engineers who need ultimate accuracy, strength, and compactness. LDB delivers precision-engineered solutions that empower smart machines and critical infrastructure. For those seeking a proven supplier and precision manufacturer, LDB ensures every degree of rotation counts.
