Spherical Roller Thrust Bearings

Product Description Design Principles: - The spherical rollers feature a spherical profile design, creating point contact with the spherical raceway of the seat ring. This ensures even distribution of axial load to each roller, preventing localized stress concentration. The spherical structure automatically compensates for ±2°-3° of installation misalignment and shaft deflection, adapting to eccentric loading conditions under heavy loads. - The split structure, through interference fit between the shaft ring and the shaft, and a transition fit between the seat ring and the housing, achieves precise positioning and ensures efficient transfer of axial load. The cage guides the rollers for smooth movement, reducing friction and collision between rollers and improving operational stability. Performance Characteristics: - High Axial Load Capacity: Point contact design + heavy-duty reinforced material, with a maximum axial load capacity of up to 8000 KN, 3-5 times higher than thrust ball bearings of the same size, suitable for ultra-heavy equipment. - Self-Aligning Compensation: No high-precision installation required; compensates for installation deviations and shaft deflection, reducing assembly difficulty and maintenance costs, and improving operational stability under heavy loads. - High Rigidity and Deformation Resistance: GCr15 material with surface hardening treatment + uniform load distribution of spherical rollers, strong resistance to deformation, ensuring axial positioning accuracy under heavy loads. - Long Service Life and Stability: Precision polished roller end faces (Ra≤0.08μm), 40% longer fatigue life than conventional bearings, suitable for long-term continuous operation. Customization Options: Supports customization of non-standard sizes (shaft ring/seat ring dimensions), self-aligning angle optimization (±3°-5°), and corrosion-resistant materials (SUS440C).

Working Principle Roller Arrangement and Load Distribution: Spherical rollers are evenly distributed along the spherical raceway of the ring. Axial load is dispersed and transmitted to the entire raceway surface through point contact between the rollers and the raceway, preventing local overloading. When there is mounting eccentricity or shaft deflection, the spherical rollers can slide slightly along the spherical raceway, automatically adjusting their position to ensure uniform load distribution and achieve self-aligning functionality. The cage guides the rollers in an orderly manner, reducing friction and interference between rollers, and improving load-carrying efficiency and operational stability. - Thermal Management: Precision grinding of the raceway and rollers, combined with a low-friction cage design, reduces friction loss and effectively controls the operating temperature rise (typical temperature rise ≤18°C). This, coupled with the thermal stability of heavy-duty specialized grease or circulating oil, ensures the thermal stability of the equipment under heavy loads and medium-to-high speeds. Installation Adaptability: The split structure allows for separate installation of the shaft ring, seat ring, and roller assembly, adapting to the assembly process of the shaft and housing. The shaft ring uses an interference fit with the shaft (shaft h7), and the seat ring uses a transition fit with the housing (hole H7), compatible with the assembly tolerance requirements of most industrial equipment, ensuring precise installation and stable operation. The self-aligning function reduces the requirements for the parallelism of the mounting base surface, simplifying the assembly process.