Double Row Tapered Roller Bearing

Design Principles: Adopt symmetrical layout of double row tapered rollers, with line contact between rollers and raceways and matched taper angles, so that the roller axis intersects with the bearing axis at the same point, ensuring uniform transmission of radial and bidirectional axial loads and avoiding stress concentration; the integral inner and outer ring structure enhances system rigidity, and the separable structure facilitates installation and maintenance. Optimized contact angle design (15° for high speed, 25°/30° for heavy load), matching taper angle according to working conditions to balance speed and load-bearing capacity; double row roller distribution increases contact area, improving shock resistance and deformation resistance. Performance Features: Core Advantage of High Load Capacity: Line contact + double row layout, radial load-bearing capacity 1.8-2.5 times higher than single row tapered roller bearings of the same size, bidirectional axial load-bearing up to 50%-80% of radial load-bearing, maximum radial load-bearing up to 5000 KN. Bidirectional Axial Load Adaptation: Taper angle design realizes bidirectional axial load bearing, no need to install additional thrust bearings, simplifying equipment structure. High Rigidity & Shock Resistance: Integral structure + optimized roller distribution, strong deformation resistance, can withstand frequent start-stop and shock loads, with outstanding operational stability. 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, adapting to long-term continuous operation. Wide Working Condition Adaptability: Flexible sealing and lubrication schemes, adaptable to various complex environments such as clean, dusty, and high-temperature. Customization Options: Supports non-standard size (inner diameter, outer diameter, width) customization, taper angle adjustment (15°/25°/30°), corrosion-resistant material (SUS440C) customization, special lubrication solutions for high/low temperature, seal type upgrade (labyrinth seal), and cage material customization.

Working Principle Roller Arrangement and Load Distribution: Double-row tapered rollers are symmetrically distributed within the raceway. The cone angle design of the rollers and raceway ensures that the extended contact lines intersect at the bearing axis, forming a stable load transfer path. Radial loads are transmitted through line contact between the rollers and raceway, while bidirectional axial loads are transmitted through the tapered surfaces of the tapered rollers. The double-row arrangement disperses the load density, preventing local overloading; impact loads are absorbed synchronously by the double-row rollers, improving operational stability. Lubrication and Sealing: - Sealing Protection: Contact seals (2RS/ZZ) effectively prevent dust and liquid ingress, suitable for complex industrial environments; non-contact seals (Z/RS) reduce resistance during high-speed operation, meeting the needs of medium-to-high speed and low friction applications; the open design facilitates lubrication replenishment, suitable for clean, heavy-duty applications. - 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); coupled with the thermal stability of specialized grease or circulating oil, it ensures the thermal stability of the equipment under heavy loads and medium-to-high speeds. Installation Adaptability: The integral structure is suitable for interference fit requirements of the shaft and housing bore, while the separable structure supports separate installation of the inner and outer rings; bearing clearance can be precisely controlled by adjusting the assembly tolerances of the shaft or housing bore, compatible with standard interference fits (shaft h7/housing bore H8), meeting the assembly tolerance requirements of most industrial equipment.