Thrust Roller Bearing

Design Principles: Spherical Roller Thrust Bearings: Rollers feature a spherical profile, forming point contact with the spherical raceway of the housing washer. They can compensate for installation misalignment and shaft deflection (±2°-3°), avoiding local stress concentration and adapting to eccentric load conditions under heavy loads. Cylindrical Roller Thrust Bearings: Rollers are arranged in parallel, forming line contact with the flat raceways of the shaft and housing washers. This maximizes the axial contact area, improving positioning accuracy, and is suitable for high-precision axial load-bearing scenarios without misalignment. The split structure achieves precise positioning through interference fit between the shaft washer and the shaft, and transition fit between the housing washer and the housing, ensuring efficient transmission of axial loads. Performance Features: Core High Axial Load Capacity: Line/point contact design, spherical type with maximum axial load up to 8000 KN, cylindrical type up to 5000 KN, 3-5 times higher than thrust ball bearings of the same size. Self-Aligning Adaptability (Spherical Type): Compensates for installation deviations and shaft deflection, reduces assembly accuracy requirements, and improves operational stability under heavy loads. High-Precision Positioning (Cylindrical Type): P4-class precision ensures axial runout ≤0.005 mm, meeting micron-level positioning requirements of precision equipment. Long Service Life & Stability: GCr15 material with surface hardening treatment, precision polishing of roller end faces (Ra≤0.08μm), fatigue life increased by 40% compared with conventional bearings. Flexible Working Condition Adaptability: Customizable sealing and lubrication schemes, compatible with various complex environments such as clean, dusty, and high-temperature. Customization Options: Supports non-standard size (shaft washer/housing washer size) customization, self-aligning angle optimization (spherical type), corrosion-resistant material (SUS440C) customization, special lubrication solutions for high/low temperature, and seal type upgrade (labyrinth + contact composite seal).

Working Principle Roller Arrangement and Load Distribution: - Spherical Roller Thrust Bearings: Spherical rollers are evenly distributed along the spherical raceway of the seat ring. The axial load is distributed and transmitted through point contact between the rollers and the raceway. The spherical design automatically ensures even load distribution and compensates for eccentricity, preventing localized overloading. - Cylindrical Roller Thrust Bearings: Parallel cylindrical rollers form line contact with the flat raceway. The axial load is evenly transmitted along the length of the rollers, ensuring high-precision axial positioning, but without eccentricity compensation capability. - Under heavy load conditions, the cage guides the rollers for smooth movement, reducing friction and collision between rollers, improving load-carrying efficiency and operational stability. Lubrication and Sealing: - Sealing Protection: Contact seals (2RS/UU) effectively prevent dust and liquid ingress, suitable for complex industrial environments; labyrinth seals (ZZ) enhance dust and impact resistance, suitable for dusty and heavy-load scenarios; open design facilitates lubrication replenishment, suitable for clean and heavy-load conditions. - Thermal Management: Precision grinding of raceways and rollers + low-friction cage design reduces friction loss and effectively controls working temperature rise (typical temperature rise ≤18°C); combined with the thermal stability of heavy-duty special grease or circulating oil, it ensures the thermal stability of the equipment under heavy load and medium-high speed conditions. Installation Adaptability: The split structure supports separate installation of the shaft ring, seat ring, and roller assembly, adapting to the assembly requirements of the shaft and housing; the shaft ring and shaft use an interference fit (shaft h7), and the seat ring and housing use a transition fit (hole H7), compatible with the assembly tolerance requirements of most industrial equipment, ensuring precise installation and stable operation.