Auto water pump bearing introduce water pump bearing and NPSH

Water pump bearing at the inlet of the pump the liquid in the impeller at work because of a certain vacuum pressure will produce gas, evaporation of bubbles in the liquid particle collision movement, on the impeller of metal surface erosion, undermining the impeller of metal, the vacuum pressure is called vaporization pressure, NPSH refers to the pump suction unit weight liquid has more than vaporization pressure at the entrance of surplus energy. Unit from mark, ( NPSH） r。 Suction is the necessary NPSH Δ h: namely allow liquid absorption of vacuum pump, which allows the installation height of pump, unit from rice. = standard atmospheric pressure (suction 10. 33 m) - NPSH - Security ( 0. 5 meters) Standard atmosphere pressure pipeline vacuum level 10. 33 m. For example: a pump NPSH required is 4. 0 m, suction Δ h? Solution: Δ h = 10. 33 - 4. 0 - 0. 5 = 5. Article 83 meters from: auto water pump bearing, shaft bearings, water pump bearings - Jiaxing bearing co. , LTD. ( ) A: auto water pump bearing introduction to gas lubrication bearings under a disadvantage: auto water pump bearing is introduced what should pay attention to in the pump shaft bearing use relevant tags: auto water pump bearing, shaft bearings, water pump bearings, auto water pump bearing related news which cases will fever auto water pump bearing thermal and bearing performance of engine cooling system of key parts of automotive water pump bearing water pump bearing why use general auto water pump bearing grease appears channeling dynamic circumstance how to deal with related products