Large Cylindrical Roller Bearing

Design Principles: Optimized large-size structure design, inner and outer rings adopt thick-wall reinforcement technology to enhance deformation resistance; cylindrical rollers are arranged in parallel, and raceways are ground for large-load adaptation to maximize contact area, evenly distributing radial heavy loads to each roller, avoiding local stress concentration, and adapting to the force requirements of large-span equipment. The separable structure (for some models) facilitates installation, disassembly and maintenance of large-size equipment without overall disassembly of related components; the integral structure enhances rigidity, adapts to ultra-high load scenarios, and balances installation convenience and structural stability. Performance Features: Core Ultra-Large Radial Load Capacity: Large-size rollers + line contact design, maximum radial load up to 8000 KN, 2-3 times higher than conventional size cylindrical roller bearings, adapting to the needs of ultra-heavy equipment. Large-Size Precision Adaptation: Full coverage of inner diameter 100-2000 mm, customizable ultra-large specifications, meeting the large-span and high-load installation needs of large equipment, replacing imported large-size products. High Rigidity & Deformation Resistance: Thick-wall inner and outer rings + reinforced materials, deformation resistance increased by 40% compared with conventional bearings, ensuring operational accuracy and stability under large-size working conditions. Long Service Life & Stability: Surface hardening treatment of GCr15 material, precision polishing of roller end faces (Ra≤0.08μm), fatigue life increased by 30% compared with conventional large-size bearings, adapting to long-term continuous operation. Customization Options: Supports non-standard large-size (inner diameter/outer diameter/width) customization, corrosion-resistant material (SUS440C) customization, separable/integral structure selection, special lubrication solutions for high/low temperature, seal type upgrade (composite seal), and cage material customization (heavy-load dedicated).

Working Principle - Roller Arrangement and Load Distribution: Large-sized cylindrical rollers are distributed parallel within the raceway. The line contact design maximizes the load-bearing area, uniformly transferring heavy radial loads to the inner and outer rings; a small amount of axial load is transmitted through the contact between the rollers and the flanges (depending on the flange design). The rigid structure of the large-sized rollers cushions impact loads and prevents localized overloading; the cage (or full complement design) guides the rollers for smooth movement, reducing frictional interference and improving operational stability under heavy loads. - Thermal Management: Precision grinding of the raceway and rollers, coupled with a low-friction cage design, reduces frictional losses and effectively controls the operating temperature rise (typical temperature rise ≤20°C); combined with the thermal stability of heavy-duty lubricants or circulating oil, it ensures the thermal stability of the equipment under large size and heavy load conditions. Installation Adaptability: The separable structure supports separate installation of the inner and outer rings, adapting to the assembly process of large-sized equipment; the integral structure is suitable for interference fit between the shaft and the bore (shaft h7/bore H8), compatible with the assembly tolerance requirements of most heavy industrial equipment; the large-size design provides ample installation space, allowing for precise control of clearance through adjustment shims, ensuring accurate installation and stable operation.