Bearing lubrication purpose and lubrication method

Objective: lubrication of the bearing lubrication bearing lubrication of the big four purpose ( 1) , reduce friction and friction losses. In the form of bearing ring, rolling body and touch each other part of the retainer, prevent metal contact, reduce friction and wear. （ 2) And prolonging fatigue life. Fatigue life of rolling bearing, in the rotation, good lubrication performance of the rolling contact surface, are extended. On the contrary, the oil viscosity is low, the thickness of lube film is not good, is shortened. （ 3) , discharge frictional heat and cooling. Circulation method to oil and so on can oil discharge by the friction heat, or by an external sound of heat, cooling. To prevent hotbox, prevent aging oil itself. （ 4) , other also has to prevent foreign body into the bearing internal, or to prevent rust and corrosion effect. Methods: lubricating bearing lubrication method, divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, to choose suitable for conditions of use, the purpose of lubrication method. If only consider lubrication and oil lubrication. However, grease lubrication can simplify the structure of bearing the surrounding of the special features, compare the pros and cons of grease lubrication and oil lubrication. Bearing lubrication method is roughly divided into two kinds of grease lubrication and oil lubrication. In order to give full play to the function of the bearing, the important thing is according to the using conditions of bearing and purpose, adopt corresponding lubrication method. Bearing grease grease is composed of base oil, thickener and additive of lubricants. When the choice, should choose is very suitable for bearing conditions of use of embellish grease, because grease trademark is different, also there will be a very big difference on performance, so when the choice, must pay attention to. Bearing the commonly used sodium calcium base grease, grease, grease sodium calcium base grease, lithium grease, aluminium base grease and molybdenum disulfide grease, etc. Number of filling grease in the bearing to 1/2 - full of bearing internal space A third as appropriate. When high speed should be reduced to one third. Too much grease, easy to make the operation of the bearing temperature. The choice according to the working temperature of the grease, grease main indicators should be drop point, oxidation stability and low temperature performance, drop point generally can be used to evaluate the high temperature performance, bearing the actual working temperature should be lower than 10 - drop point 20℃。 The use of synthetic grease temperature should be lower than 20 - drop point 30℃。 Based on choosing grease, bearing load of heavy duty should choose small grease penetration. When working under high pressure in addition to the penetration of small, must have high oil film strength and extreme pressure properties. According to the environmental conditions choosing grease, calcium base grease is not easy to dissolve in water, suitable for dry and less moisture environment. Bearings are divided into open type, single or double dust cover, single or double sealing ring, factory has filled the right amount of lubricating oil, can be used directly. Oil brand lubricating oil use basic types of work temperature range of chevron (CVX sri - Fat - 2 minerals 30 ~ 180 high temperature resistance, resistance to water shell, shell alvania fat - 2 minerals 35 ~ 120 long life, wide application shell shell doliun oil fat - r 40 ~ 150 corrosion resistance, resistance to water synergy kyodo yoshi SRL synthetic fat - 40 ~ 150 low noise, low torque mobil mobil HP lithium complex into fat - 30 ~ 110 vibration resistance, corrosion resistance of dupont dupont krytox240ac fat - fluoride 35-290 high temperature resistant, good features esso exxon beacon synthetic fat - 325 55 ~ 120 general bearing grease lubricating oil under the condition of high speed, high temperature, lubrication has not timely lubrication can be used. Through the circulation of lubricating oil, can take away a lot of calories. Is an important characteristic of lubricating oil viscosity, viscosity directly affect the liquidity of lubricating oil and the size of the friction surface is formed between the oil film thickness, the bearing working temperature of lubricating oil viscosity is usually 12 - 15cst。 Speed the Gao Yingxuan lower viscosity, the more load weight should choose high viscosity. Commonly used lubricating oil has high-speed machine oil, machine oil, turbine oil, compressor oil, transformer oil, cylinder oil, etc. Lubricating oil bath lubrication method: oil bath lubrication is the most common lubrication method, suitable for low, medium speed, bearing lubrication, bearing part of immersion in oil tank, oil by the bearing parts of rotation, and then flow back into the tank, the oil level should be slightly lower than the lowest at the center of the roller. Lubrication: drops oil lubrication is suitable for need to ration oil bearing parts, drip oil every 3 - general A drop of it is advisable to 8 seconds, too much oil will cause the bearing temperature increased. Circulating oil lubrication: use a pump to filter the oil transfer to the bearing parts, through the bearing lubricating oil filter cooling after use. Due to the circulating oil can take a certain quantity of heat, cooling the bearing, therefore method is suitable for high speed bearing parts. Spray lubrication: mixed with dry compressed air after the sprayer and oil formation oil mist, spray bearing, can effectively make the bearing cooling airflow and can prevent the intrusion. This method is suitable for high speed, high temperature lubrication bearing parts. Injection lubrication: use a pump to pass through the nozzle shot into the bearing, high pressure oil into the bearing of the bearing at the other end into the oil in the tank. When bearing at high speed, rolling element and cage with high rotate speed makes the surrounding air, the air in general it is difficult to be sent to the bearing lubricating oil lubrication method, then must use the method of high-pressure jet spray the lubricating oil to the bearings, the position of the nozzle should be placed between inner ring and retainer center. ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ jiaxing seiko co. , LTD. ( Professional motor bearing application solutions provider) Focus on miniature high speed, low noise, long life motor bearing telephone: fax: an article on the sales @ : under the manufacturing process of bearing a: six bearing fault