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Time：2021-12-24Views：0
First set the working environment: within the rated voltage, room temperature around 25℃, relative humidity 15%~65%RH environment, professional appraisal of hydraulic bearings: low accuracy Estimated life span: 40,000 hours, totaling 1666.7 days, about Detailed description for 4.5 years: oil-bearing electric fans mainly contain oil in the inner layer, which is attributed to sliding friction.
Once the oil is consumed, the heat dissipation effect is extremely poor, the speed drops significantly, and there is noise. This kind of electric fan has a relatively short lifespan, which is proportional to its low price. However, the new generation of hydraulic bearings has undergone self-refilling technology, and the service life has been greatly improved. It can basically reach more than 3w hours, which was once satisfactory. Most use demand.
Professional appraisal of double ball bearings: High precision. Estimated life span: 50000 hours, 2084 days in total, about 5.7 years. Detailed speed per second: The relative movement of the bearing and the shaft is point contact, and the movement friction is small. The internal ball of the bearing is used in the retainer. Cooperate with lubricating grease for rotating motion under positioning; electric fans can be fixed in any direction. The advantages of double-ball fans are longer life and good anti-aging performance. When reviewing fans with higher speeds, the defect of double-ball bearings is high manufacturing cost. And the noise is greater at the same speed.
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