7, multi-stage pump, pump shaft and mechanical and electrical shock is not in the same center line. Or shaft crooked material. The axial center of the pump and motor alignment, 8, bearing overheating. No oil. Pump and motor shaft not in the same center line. Come on. Aligned with the centerline of the shaft, checking or cleaning the bearing body. Centrifugal pump is based on this principle. Impeller blades rotating at high speed rotating water driven, D85-45X4 multi-stage pump, the water out, so as to achieve the purpose of transportation. Centrifugal pump has a good variety. From the use can be divided into civil and industrial pumps, from the transmission medium can be divided into clear water pump, trash pump, corrosion resistant pumps and so on. Multi-stage pump, D85-45X5 multistage pumps, mechanical seals Daquan (high-quality businesses) Ltd provided by the Shijiazhuang-send pump. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is specialized in "slurry pumps, submersible pumps, sewage pumps, chemical pump, pulp pump, water pump, mud pump, multi-stage" of the enterprise, the company of " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.