Bearing temperature is often expressed in unusual circumstances. Harmful to the bearing temperature and the lubricating oil. Sometimes, bearing overheating can be attributed to the bearing lubricant and bearing over 125 ℃ temperature in the long run, reduce bearing life, resulting in high bearing the following reasons: lack of lubrication or excessive amount of lubricating oil, lubricating oil containing impurities , heavy duty, bearing damage, lack of space, and seal friction generates heat. Therefore, continuous monitoring bearing temperature is necessary, whether the measure or other important part of the bearing itself. If you are in the business situation has not changed, any change in temperature may be faulty.
Bearing temperature measurement can often help thermometer can accurately measure the temperature of the bearing, and in accordance with degree. Important bearing when it is damaged, it will cause equipment downtime, therefore these bearings should preferably be equipped with a temperature probe. Under normal circumstances, the bearing lubrication and lubricated natural temperature rise and for one day or two.
Second, observe
If you have a good lubrication and bearing right debris and moisture barrier that seals should not wear, but preferably in the open bearing housing to visual inspection and periodic inspection bearing seals, bearing seals around the examination conditions, ensure that sufficient to prevent liquids or corrosive liquids or gases from entering the bearing along the axis. Protection ring and labyrinth seals should be coated with grease to protect its maximum protection. Seals if worn should be replaced soon. Oil sealing function in addition to the bearing to prevent the magazine, and the other function is to keep lubricated bearing housing. If the seal leaks immediately check the seal has been worn or loose oil block. Leak phenomenon may be caused by loose fitting of the bearing box or because adding too much lubricant to form a mixed and leak detection, automatic lubrication system to ensure that the correct amount of lubricant and to examine whether or black, if such a phenomenon, usually say that the lubricant contains magazines.
Third, listen
Using auditory recognition irregular operation is very common approach. For example, with electronic stethoscope to listen to part of the abnormal noise is experienced by method of operation. If it is in good working condition of the bearing will make a low hum of voices. If a sharp hiss, squeaks and other irregular sounds, commonly referred to as the poor working conditions of the bearing. Harsh creaking sound may be due to improper lubrication. Improper bearing clearance may also cause a metallic sound. Dent on the bearing outer ring track will produce vibrations and resulting smooth crisp sound. If the installation of the percussion scars will produce noise, noise will vary with the bearing speed. If there is intermittent noise, rolling element may be damaged. This sound is happening on the surface bearing the date, if the pollutants are often caused by the hissing. Severely damaged bearings will produce irregular and noise.
Bearing damage is listening to consciousness, but usually at this time has come to replace the bearings. Thus, a better way, for example, such as electronic control equipment, diagnostic bearing operating condition.
1: Current bearings are lubricated with grease, running over 1,500 hours, should be timely replacement of grease filling should be noted that the amount of oil required amount, because too little or too much grease will cause the bearing heating, Chong Yu proposed to maintain the amount of fuel in the bearing chamber volume of 1/2 to 2/3 is appropriate.
2: The use of sodium based grease motor bearing (most are of this type), this feature is to grease temperature (125 ℃), drawback is easily dissolved in water, so the lubrication pump is entirely inappropriate.
3: used for holding oil or grease containers should be clean, and usually should be sealed well, do not let dust, iron filings and other debris fell on them, so as to avoid damage to the bearings.
4: Take special note is put into use a new pump for the first time in 100 hours of operation shall be promptly replaced after grease (oil), the next to replace 1 500 hours of operation.
5: For the use of oil-lubricated bearings, the oil should be added to a predetermined position.
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