After assembling the hub of the Stainless Steel Submersible Pump assembly coupling onto the shaft, check the verticality and concentricity of the hub and shaft carefully. Usually set two dial indicators on the end and outer circle of the hub, rotate when turning the wheel, observe the value of the overall beating of the hub (including the beating end and radial movement), and determine the vertical axis, the shaft axis and the coaxial line The situation of the situation. Couplings of different speeds have different requirements for overall runout, and different types of couplings have different requirements for overall runout. However, the total runout deviation of the rear hub of the wheel assembly on the wheel hub must meet the design requirements. The value is within the tolerance range. Inside, this is one of the main quality requirements of the coupling assembly.
There are many reasons why the total runout value of the pump does not meet the requirements caused by the hub assembly. First, it may be caused by machining errors in the manufacturing process. For on-site assembly and processing, the main reason is that the correct treatment of the surface of the wheel hole is incorrect. , The deviation of the concentricity between the hub and the axis. Another reason is that the key is incorrectly assembled due to the different axis of the hub and the shaft, so there is a key connection in the assembly. When installing the key correctly, the key on the side of the key should be closely matched with the wall of the key slot. The color check is usually carried out during assembly. It can be used to repair the file or the blade to meet the requirements in a bad time. There is generally a gap on the upper part of the button, which is about 0.1-0.2mm.
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