27
2018
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11
Maintenance method of water pump bearings and attention problems during disassembly and assembly
1. The pump that is newly put into use must be replaced with grease (oil) after 100 hours of operation, and then replaced once every 500 hours.
2, the use of grease-lubricated flow bearings, after 1500 hours of operation, should be replaced with grease, the amount of oil can not be too much or too little, because too much or too little grease will cause bearing heat, the amount of fuel is generally in the The volume of the bearing chamber is preferably 1/2 to 2/3.
3. For bearings lubricated with lubricating oil, the amount of oil should be added to the specified position.
4, the container of lubricating oil or grease should be clean, usually should be sealed, there should be no dust, iron filings and other debris, so as not to damage the bearing
5, motor bearings generally use sodium-based grease, this grease is characterized by high temperature (125 ° C), but easy to dissolve in water, so it can not be used for lubrication of water pump bearings.
What should I pay attention to when disassembling the bearing in the gear pump class?
The following are the issues to be aware of when disassembling the bearing:
(1) The drag force should be continued to the extent that the screw pump should stop applying force when the bearing is just installed in the correct position, for example, when the bearing is installed, and the end face of the ferrule (washer) is abutted against the seat hole or the shoulder of the shaft. The end face can neither be squeezed too tightly nor can it be placed in place.
(2) The force of the force applied is as far as possible through the axis of the oil-free bearing. The plastic pump requires that the point of application is uniformly symmetrical and stable, and the force is applied through the spherical surface or parallel to the axis.
(3) Avoid the force applied by the rolling element. The diaphragm pump requires the force applied through the inner ring when the inner ring (shaft ring) is attached or detached, and the force is applied through the outer ring when the outer ring is assembled or removed.
(4) The size of the force should be smooth and uniform, and it is not suitable for impact. The self-priming pump requires oil pressure or a tool that can apply smooth tension or pressure. When it is necessary to use hammering, it must also pass through a copper sleeve. Softer and not chipped metal to cushion, knocking
Can be gentle. It is best to use a copper rod or a copper hammer for hammering.
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