IKO forklift bearings using the stability of the grease must pay attention to the problem

For rolling bearing, the stability of the grease and the below about into a canal is very important, in order to replenish the mechanical stability of the grease and the below about into a canal is very important, for filling abandon the mechanical stability of the grease and sex into the canal, and overcome the effect of centrifugal force, generally recommend choose consistency larger 3 grease, rather than smaller grease consistency. On the contrary, in order to reduce the forklift bearing troubled times, especially start to turn gone with, IKO bearings for the average speed is not too high, but as far as possible choose low consistency grease is advisable. Fat plastic viscosity problem outweigh the viscosity of base oil, and grease film has obvious flexibility, therefore its ability to resist load is greater than the base oil. As long as the base oil of proper viscosity, there is no question of the load resistance of the grease. Under the condition of boundary lubrication or extreme pressure lubrication, mainly rely on additives to improve the anti-wear and extreme pressure performance, meet the requirements of lubrication conditions. Forklift bearing grease is usually make a similar viscosity or apparent viscosity, said when, on the viscosity of grease must specify the temperature and shear rate. Similar viscosity index can be used to control the low temperature fluidity and pumping. Measure IKO bearing grease performance at low temperature is one of the important index of low temperature torque, namely at low temperature ( - 20 ° c below) Grease block bearing rotational degree of low speed flows, the low temperature torque of the grease by the starting torque and rotation torque after 60 mm average said. The evaporative (bearing grease C) Said in the long-term use under condition of high temperature grease, grease oil volatilization, evaporative as small as possible. The evaporative mainly depends on the nature of the lubricating oil and fat fractions. Oxidation stability is refers to the grease when used in long-term storage or long-term high temperature resistance to heat and oxygen, permanent changes in their ability to maintain its nature will not occur. Due to oxidation, are often free alkali content reduced or free organic acid content increases, drop point drop, dark appearance, appear different smell, consistency, ultimate strength, similar viscosity decreased, generated corrosive product and destroy the material of grease, soap oil separation. In long-term storage of grease, therefore, should be stored in dry and ventilated environment, prevent sun, and shall regularly check free base or free change of the project such as organic acid, corrosion resistance, to ensure its quality and performance. IKO bearing grease is the most basic features, is the thixotropy. When applying an external force, the flow of the grease in gradually become soft, the apparent viscosity decreased, but when at rest, after a period of time ( A very short) Again, the consistency ( Restore) This feature is called thixotropy. Decides the characteristics of grease, it can be at the site of the is not suitable for lubricating oil lubrication, and showed its excellent performance. Forklift bearing the ultimate strength of the grease is guide the minimum required sample to flow shear stress, also called ultimate shear stress. Grease ultimate strength is a function of temperature, the higher the temperature of fat, the smaller the ultimate strength, temperature is reduced, the ultimate strength of bigger, it depends on the size of the thickener and the kinds of content, and lipid process conditions also have a certain relationship. The rest of the rest of the grease is completely after discharge, a small amount of grease in the rolling element and raceway, keep touch each other, cadastral wedge formed by a thin film of grease, which has entered into the phase of the normal operation of forklift bearings. The temperature decrease and balance. That is to say, the long-term lubrication, mainly rely on the film of grease. In addition, in the process of long-term operation of IKO bearing, rolling element and raceway profile near detachments and keep on the shelf to atrophy and grease base oil, flow into the race, between supplement to lubrication also to have certain effect. Different in IKO bearing grease form outline to traffic is not the same, must form outline is quite is, shorter running-in time, bearing temperature is low, in the long run and smooth, this is a kind of ideal grease, so is especially important for into the canal of grease. Some so-called vortex type grease is not, is not easy to form the outline, even form the contour is easy to collapse, then roll back to the redundant grease in the tiny repeatedly by strong mixing conditions in the long-term, forklift bearing a large torque, high temperature, and uneven, also may produce noise, grease also easy metamorphism and erosion.