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In the operation of the examination project have IKO bearing rolling sound, vibration, temperature, lubrication state, as follows:
A rolling sound, IKO bearing
The size and quality of the acoustic measuring IKO bearings in the running of the rolling sound check, IKO bearing even a slight separation of the injury, also issued abnormal sound and irregular sound, with sound measuring device can distinguish.
Two, IKO bearing vibration
IKO bearing vibration is very sensitive to the bearing damage, such as peeling, indentation, rust, crack, wear will be reflected in the IKO bearing vibration measurement, so, by using the IKO special measuring bearing vibration (frequency analyzer etc) can measure the size of the vibration, can not be inferred from abnormal situation through frequency. The measured values for different IKO bearing conditions of use or sensor installation location, therefore require prior to each machine measurement comparison criteria.
Three, IKO bearing temperature
IKO bearing temperature, generally bearing outside of room temperature can be speculated that, if the uses of oil hole can directly measure the temperature of the bearing outer ring of the IKO, the more appropriate. Usually, IKO bearing temperature as running slowly rising, reach a steady state after 1-2 hours. The normal temperature of IKO bearing due to the heat capacity, the machine heat dissipating capacity, speed and load and different. If the lubrication, install suitable, IKO bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. Based on a large amount of test data, table 4-1 lists the average temperature values of IKO bearing outer ring work machinery, for reference. Because of the influence of temperature, speed, load, lubrication environment, the table value represents only the temperature range of. The use of thermal exchanger can IKO bearing temperature monitoring at any time, and when the temperature exceeds the specified value alarm households or stop to prevent burning shaft accident.
Four, lubrication
(a) IKO bearing lubrication
Lubrication has important influence on the fatigue life of rolling bearings and friction, wear, Wen Sheng, vibration, no normal lubrication, the bearings will not work. Analysis of the causes of IKO bearing damage showed that, IKO bearing damage about 40% related to poor lubrication. Therefore, good lubrication IKO bearing are the effective measures for reducing friction and wear. In addition, the IKO bearing lubrication and cooling, rust proof, sealing, ease the impact of a variety of roles, IKO bearing lubrication can be briefly described as follows:
A. in the contact surface between the two rolling or sliding surface to form a layer of oil film to two surface spaced, reduce friction and wear of contact surface.
B. uses oil lubrication, especially the circulating oil lubrication, oil mist lubrication and oil lubrication, lubricating oil can take IKO bearing most of the friction heat, the heat dissipation effect.
C. with grease lubrication, foreign body can prevent external dust from entering the IKO bearing, plays the seal effect.
D. lubricant has a role in the prevention of metal corrosion.
The fatigue life of E. extended IKO bearing.
(two) comparison of grease lubrication and oil lubrication
IKO bearings lubrication method can be divided into two kinds of grease lubrication and oil lubrication. In order to give full play to the function of IKO bearing, it is important to reduce the use and purpose of use, the lubricating method. Table 4-2 shows the advantages and disadvantages of grease lubrication and oil lubrication.
(three) for grease lubrication
Grease is composed of base oil, thickening agent and additives of lubricant. When the choice, should choose is very suitable for bearing conditions of use lubricant, due to different labels, also will have the very big difference in performance, so when the choice, must pay attention to. Grease IKO bearings are commonly used calcium base grease, sodium base grease, calcium sodium grease, lithium base grease, aluminum base grease or molybdenum disulfide grease. The number of IKO bearing grease filling, full of bearing 1/2-1/3 suitable for the internal space. High speed should be reduced to 1/3. Excess grease to elevated temperature.
(four) the choice of grease
Grease selection operating temperature according to the main index, should be the drop point, oxidation stability and low temperature performance, drop point can be used to evaluate the high temperature performance, the actual working temperature of IKO bearing should be lower than 10-20 ℃ drop point. Using the temperature of synthetic grease should be lower than 20-30 ℃ drop point. According to the IKO bearing load selection of grease, the grease heavy load should be selected penetration small. When working under pressure in addition to penetration of small things, but also have high oil film strength and extreme pressure properties. According to the environmental conditions of lubricating grease, calcium base grease is not soluble in water, and is suitable for drying and less water environment.

(five) oil lubrication
In high-speed, high-temperature conditions, grease has not adapted to be lubricated by oil. The lubricating oil circulation, can take away a lot of heat.
Viscosity is an important characteristic of lubricating oil, oil film thickness and friction surface viscosity and liquidity directly affects the size of the lubricating oil, lubricating oil working temperature of IKO bearing lower viscosity is generally 12-15cst. Higher speed should be selected lower viscosity, the heavier the load should be selected high viscosity. Lubricating oil used mechanical oil, high speed machine oil, turbine oil, compressor oil, transformer oil, cylinder oil etc..
Including oil lubrication method:
A. oil bath lubrication
Oil bath lubrication lubrication is the most common method, suitable for low speed, lubrication bearing, IKO bearing partially immersed in a tank, lubricating oil from the bearing parts with the rotation, and then flows back to the oil tank oil level should be slightly lower than the minimum rolling body center.
B. lubrication
Oil drip lubrication for the need to supply quantitative lubrication IKO bearing parts, oil drop weight every 3-8 seconds a drop for the Yi, excessive amount of oil will cause the IKO bearing temperature increase.
The C. circulating oil lubrication
Oil filter oil is delivered to the IKO bearing parts, the lubricating oil bearing after filtering using after cooling. Because the circulation oil can take a certain amount of heat, cooling the IKO bearing, IKO bearing member and method is suitable for high speed.
D. spray lubrication
With dry compressed air sprayer and mix with the lubricating oil to form oil mist spray, bearings, air can effectively make the IKO bearing cooling and can prevent the intrusion. This method is suitable for lubrication of high speed, high temperature IKO bearing components.
E. spray lubrication
Oil pump pressure oil nozzle jet to IKO bearings, bearing the IKO oil into the bearing at the other end into the oil tank. In the IKO bearings rotate at high speed, a rolling body and a holding frame to rotate speed is very high so that the surrounding air flow, with general lubrication methods are very difficult to be sent to the IKO bearing lubricating oil, so must use high pressure jet will lubricating oil spraying to IKO bearing, nozzle position should be placed between the inner ring and the the center of the cage.
(six) the solid lubrication
In some special conditions, join the small amounts of solid lubricant grease, such as the addition of 3~5% 1 MoS2 can reduce wear, improve the compressive resistance ability, for the high temperature, high vacuum, elegant, corrosion resistance, radiation resistance, and very low temperature and other special conditions, the solid lubricant is added into the engineering plastic or powder metallurgy material in, can be made with IKO bearing parts and self-lubricating properties, such as adhesive bonding in the solid lubricant, raceway, cage and rolling body, form a lubricating film to reduce friction and wear, have a certain effect.
(seven) and the replacement of lubricants added
A. grease replenishment interval time
Due to mechanical action, aging and pollution, IKO fills in the bearing arrangement of lubricating base will gradually lose its lubrication performance. Therefore, the lubrication rank need to supplement and update. Interval lubricant added due to formation, IKO bearing size and rotation speed and different, according to the general interval operation time need to add lubricating grease. In addition, when the IKO bearing temperature exceeds 70 ℃, IKO bearing temperature rise 15 ℃, then use grease replenishment interval time is reduced by half. Double closed IKO bearing in manufacturing has been put into the fat, "HRB" used in these products is the standard grease, co operating temperature range and other properties suitable for the occasion, and filling grease amount and the corresponding size IKO bearing, grease life in general more than IKO bearing life, except for special occasions, do not need to add grease.
The replacement cycle B. lubricating oil
The replacement cycle lubricating oil because of the different conditions of use and the amount of oil, under normal circumstances, in the operation temperature is 50 ℃, the use of good environment less dust condition, once a year, when the temperature reached 100 ℃, 3 months or less a replacement.