Original high-performance angular contact ball bearings engineered for high-speed operations and radial-axial load support. Ideal for industrial machinery, automotive systems, and precision equipment. Features hardened steel construction, optimized contact angles, and advanced lubrication for extended service life.
High-speed 7207B_dB and 7208 angular contact ball bearings are precision-engineered for heavy radial-axial loads and high RPM operations. Manufactured in China with ISO 9001 certification, these bearings feature advanced heat treatment, hybrid ceramic options, and P4/P5 accuracy grades.
Parâmetro | 7207B_dB | 7208 |
---|---|---|
Diâmetro do furo (mm) | 35 | 40 |
Diâmetro exterior (mm) | 72 | 80 |
Carga dinâmica (kN) | 38.5 | 42.3 |
RPM máximas (massa lubrificante) | 9,500 | 8,800 |
Ângulo de contacto | 40° | 25° |
Problema. A German CNC manufacturer experienced 23% spindle failures annually at 12,000 RPM operations.
Solução. Upgraded to 7207B_dB bearings with hybrid ceramic balls, achieving:
Desafio. 2.5MW turbine gearbox bearings failing at 18-month intervals in high-vibration environments.
Implementação. Customized 7208 bearings with:
Antecedentes. Tier-1 supplier for Toyota production lines
Questão. SCARA robot bearing replacements every 6,000 operating hours
Resultado. 7207B_dB implementation extended service intervals to 18,000 hours with 0.003mm axial play tolerance.
Funcionamento. 24/7 iron ore transport systems
Pain Point: 7208 bearings failing every 4 months under 7-ton radial loads
Resultado. Custom heat-treated 7208 variants achieved 11-month lifespan despite 3g vibration levels.
Fator | 7207B_dB | 7208 | Decision Matrix |
---|---|---|---|
Capacidade de carga axial | Superior (40° angle) | Moderado | Choose 7207B_dB for >35% axial load ratio |
Thermal Limits | 180°C (standard) | 150°C | 7207B_dB recommended for EV/petrochem apps |
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