For the lubrication of centrifugal pump bearings, manufacturers recommend using fully synthetic lubricants with grades 150 or 46
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For the lubrication of centrifugal pump bearings, manufacturers recommend using fully synthetic lubricants such as grade 150 or 46; the lubrication is primarily applied to the bearings. The main factors to consider are: 1. Temperature: If the temperature is above 100 degrees, use synthetic lubricant grade 150. It can last from 6 to 1 year, or even 2 to 3 years without needing to be replaced. Minerals should be replaced every 6 months at the latest, and issues should also be checked. 2. Rotational speed: For applications with low rotational speeds and relatively low temperatures, grease can be used (dry oil lubrication). Generally, in applications with high speeds and high temperatures, lubricating oil is used, as its ability to dissipate heat is a key factor to consider. For centrifugal fans/compressors imported from abroad, manufacturers recommend fully synthetic lubricants rated 150 or 46. Fully synthetic lubricants offer excellent performance, both high and low. **The types of lubricating oil have been simplified. High temperature, model 150. The temperature isn’t too high; it’s 46 degrees. 3. Fluid or gas. Consider the corrosivity, and pay special attention to the components of the lubricant.
Our experience shows that for motors with rolling bearings, 3# lithium-based grease is generally used, while SKF bearings are lubricated with SKF LGHP2 grease； Centrifugal pumps use ISO VG46 lubricant; metering pumps use Mobilgear 600 XP 150, 220, 460. Compressors use ISO VG68 lubricant, while compressor reducers use min-oil VG 320 synthetic lubricant