To extend the lifespan of a motor, one of the most critical steps is addressing the bearing system. A properly functioning bearing system relies heavily on effective lubrication, and grease plays a vital role in achieving optimal performance. In this article, Dalan Motor’s expert will guide you through the process of selecting the right grease for vane pump and oil pump motors.
When choosing bearing grease, several key factors should be considered:
(1) The grease must have rust protection properties and strong adhesion. It should contain a rust inhibitor that is insoluble in water, allowing it to stick to metal surfaces and form a protective oil film.
(2) A proper sealing structure is essential to keep contaminants and moisture away from the bearings and lubricant. Any intrusion during operation can lead to damage and reduce the bearing's life.
(3) Regular and correct maintenance is crucial for extending bearing life. During routine checks, ensure the grease remains clean and use appropriate tools to maintain the system effectively.
(4) Avoid mixing incompatible greases. Mixing two different types often results in a softer consistency, which may cause the grease to lose its effectiveness and potentially damage the bearing. If unsure about the original grease type, always remove the old grease before applying new lubricant.
Grease classification is typically based on temperature and operating conditions. The performance of grease—its consistency and lubricity—is greatly influenced by the temperature at which it operates. Bearings must be paired with grease that maintains the right viscosity and lubrication properties under their specific working temperatures. Greases are generally categorized into low, medium, and high-temperature types depending on their application range.
Choosing the wrong grease can render all other protective measures ineffective. The base oil viscosity of the grease must be sufficient to provide adequate lubrication at the operating temperature. Viscosity changes with temperature—higher temperatures lower viscosity, while lower temperatures increase it. Therefore, selecting the right grease is essential for long-term reliability and performance.
----- Editor: Dalan Oil Pump Motor 02 - Procurement Consultant
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