Chemical pump life extension method - the correct choice of lubricant First, the chemical pump lubrication standards According to the characteristics of rolling bearings, wear and tear, to meet the appropriate requirements of lubrication, must have four conditions â‘ adequate flexibility of the establishment of hydrodynamic oil film â‘¡ The formation of a good border film â‘¢ clean lubricating oil â‘£ appropriate and adequate supply of lubricating oil Second, the chemical pump effective lubrication period In a well-sealed, normal working environment, the lubricated components appear abnormal wear, such as due to lubrication Itself and other media generated by oxidation, aging and other phenomena, it also indicates that the lubrication will reach the limit of life expectancy. Lubrication can reliably meet the requirements of the period, known as the effective lubrication period. Third, the visual inspection of chemical pump lubrication quality â‘ For oil-lubricated bearings, such as the surface of the bearing found scum or film, then the bearing temperature must be higher than the upper limit of the temperature of lubrication; If there is no residual oil residue, the bearing The working temperature is just the upper limit of the oil temperature or close to the upper limit; if the bearing is dry, the working surface is foggy, that is, the lubricating oil has reached its effective life not long ago. â‘¡ For grease-lubricated bearings, if the grease is black and still oily, the load must exceed the carrying capacity of the grease. If the grease becomes white and spongy, it may be caused by over-inflation and air bubbles ; If the fat is a homogeneous blue-black and dry hair, that is, grease lubrication capacity has reached the limit; if the grease residue hard surface and internal soft, that is fat has been subjected to external heat source grilled moxibustion, if fat residue Hard all over the body, it is caused by the heat generated by the bearing burning moxibustion. Found the above situation, immediately clean the bearings, open the inspection, appropriate treatment Fourth, chemical pump lubricant selection Basically, the viscosity is the main basis for the selection of lubricants. Also need to consider the bearing pressure, working temperature, friction surface conditions, lubrication methods and other conditions, the effective principles of their selection is: â‘ in the load and impact, variable load and other work environment, should use high viscosity lubricant. â‘¡ high sliding speed, in order to reduce energy consumption, should use low viscosity lubricant. â‘¢ at the working temperature, the oil will be thinner (lower viscosity), it should be used high viscosity lubricant.
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