The high pressure pump is the improvement product of type in which the needle bearings are used for the cranksbaft and the connetction lever with the characteristics of small frication coefficient well bubreication, stable transmission, low temperature, and long time work continuously, it is apliedd for the high-pressure hydraulic excavating coal. Hydraulic liquid supply in the coal well. The high-pressure water cleaning, ellminiation squama in metallurgy. Ship rust cleaning.
The high pressure pump is the improvement product of type in which the needle bearings are used for