Overview
The PSU20 Series Four-Point Contact Slewing Bearings represent a breakthrough in rotational bearing technology, specifically engineered for applications requiring exceptional load-bearing capacity and smooth rotational performance. As gearless bearings in the slewing bearing family, these units are designed to meet rigorous industrial demands while maintaining operational efficiency.
Technical Specifications
- Model Range: Ø200mm to Ø3000mm
- Dynamic Load Capacity: Up to 4500 kN
- Static Load Capacity: Up to 9000 kN
- Materials:
- 42CrMo4/50Mn alloy steel raceways
- SAE 52100 chrome steel balls
- Nitrile rubber (NBR) sealing system
- Accuracy Class: ISO 492 P5 (ABEC-5 equivalent)
- Operating Temperature: -30°C to +80°C
Design Advantages
The four-point contact design enables:
- Simultaneous axial, radial, and moment load handling
- 35% higher moment load capacity compared to standard single-row bearings
- Reduced edge stress concentration (≤18% improvement)
2. Advanced Lubrication System
- Multi-port grease injection channels
- Labyrinth-style grease retention design
- Compatible with EP2 lithium complex grease (NLGI Grade 2)
3. Robust Protection Features
- Triple-seal configuration (2x main seals + 1x particle deflector)
- IP66-rated ingress protection
- Corrosion-resistant zinc-nickel coating (8-12μm)
Application Scenarios
Industrial Machinery
- Rotary indexing tables
- Automated welding positioners
- Large-scale material handling systems
Renewable Energy
- Solar tracker mechanisms
- Pitch/yaw control systems
Specialized Equipment
- Medical imaging devices
- Radar positioning systems
- Robotic welding arms
Installation & Maintenance
Mounting Considerations
- Recommended base plate flatness: ≤0.2mm/m²
- Bolt preload torque range: 350-450 N·m (M24 bolts)
- Thermal expansion compensation: 0.15mm/m per 50°C ΔT
Service Life Optimization
- Initial relubrication interval: 500 operating hours
- Standard service interval: clearance monitoring threshold: ≥0.25mm radial play
Our manufacturing process incorporates:
- 100% magnetic particle inspection
- Hardness gradient testing (58-62 HRC surface)
- 3D profile measurement (≤5μm deviation tolerance)
- Customizable witness mark alignment system
TKD Information
- Title: PSU20 Series Four-Point Slewing Bearings | High-Capacity Rotation Solutions
- Keywords:
- Four-point contact slewing bearings
- Gearless rotary bearings
- Heavy-duty bearing systems
- Precision slewing rings
- Industrial rotation mechanisms
- Description: Explore the technical specifications and industrial applications of PSU20 Series four-point contact slewing bearings, engineered for exceptional load capacity and rotational precision in demanding operational environments.
