Bearing life is affected by many factors, including type, size, material, lubrication method, and operating environment. High-quality bearings generally have a long lifespan under normal operating conditions, but specific values are difficult to standardize. Roller bearings are suitable for high-load applications (higher load capacity), while ball bearings are suitable for high-speed, low-load applications. Larger bearings generally have longer lifespans. Heat treatment of high-quality alloy steel increases its hardness (HRC 58-62) and wear resistance, thereby extending lifespan. Lubrication method is crucial to lifespan. Good lubrication reduces friction (friction coefficient <0.0015) and lowers temperature rise (<80°C). Harsh environments (such as high temperatures >120°C and high humidity >80% RH) can significantly shorten lifespan.
Generator bearings require high load capacity (dynamic load >50kN) and wear resistance, and sealing (IP65 rating) to protect against dust and water. Regular maintenance (checking lubrication every 500 hours) and selecting high-quality bearings (such as ISO 9001-certified products) can extend lifespan.
