In order to extend the service life of the bearings, focus on maintenance of industrial bearings, overhaul, in order to prevent accidents, it is imperative to ensure operational reliability, improved production, economy. Maintains the best machinery operating conditions operational standards, carried out on a regular basis. Includes monitoring, regular running conditions, supplementing or replacing lubricant remove the check. As a matter of running repair, FAG bearings of rotating tones, vibration, temperature, lubricant condition and so on.
1, axle bearing cleaning removed bearing maintenance, first recorded appearance of the bearing, confirm that the residual amount of lubricant, after checking the lubricant used for sampling, wash bearings. As a cleaning agent, ordinary gasoline, kerosene. Remove bearing cleaning, heavy cleaning and light cleaning in a separate container, put metal mesh on the bottom so that bearing has no contact with the dirt container. Coarse cleaning, rotate the bearing with dirt will damage the rolling surface of the bearing, should be noted. Coarse cleaning oil, use a brush to remove grease, adhesive material, after a generally clean, fine wash. Intensive wash, the FAG bearing in cleaning oil side rotation and careful cleaning. In addition, clean oil should always be kept clean.
2, bearing maintenance and judgment: in order to determine whether removing bearings can be used, check bearing wash after. Check on Raceway surface, scroll, status of the mating surfaces, cages and wear, increased bearing clearance of injury not attributable to dimensional accuracy declined, the exception. Non-separation of small ball bearings, the inner ring support level with one hand, rotate the outer ring to confirm fluency. Separation of tapered roller bearings and other bearings, rolling element and the Raceway in the outer ring can be respectively checked. Larger bearings cannot rotate, check rolling element and the Raceway, cage, sidewall surface appearance, bearing the importance of ever higher, ever be inspected carefully.
3, bearing lubrication purposes: FAG bearings bearing lubrication in order to reduce internal friction and friction losses, preventing the burning stick, the lubrication effectiveness is as follows.
(1), to reduce friction and friction losses. Form the bearing rings and rolling elements and cage of mutual contacts and prevent metal contact, reducing friction and wear.
(2), longer fatigue life. FAG bearing rolling fatigue life, spin, good lubrication of rolling contact surface, is extended. In contrast, low oil viscosity, oil film thickness is not good, is shortened.
(3) the friction heat, cooling, foul. Circulation to the oil law and other oil discharges by friction heat, or by the heat coming from the external cooling. Prevent the bearings from overheating to prevent ageing of the oil itself.
(4) other: there are also preventing the intrusion of foreign bodies bearing, or prevent rust, corrosion effects. Methods of lubrication: bearings lubrication method, divided into grease lubrication and oil lubrication. In order for the bearing play function very well, first of all, to select suitable for conditions of use, use of lubrication method. If you only consider the lubrication, lubricant oil lubrication of the dominant. However, grease lubrication around bearing structure can be simplified like, compare the advantages and disadvantages of grease lubrication and oil lubrication.
4, the installation of bearing: bearing is properly installed, affecting the accuracy, longevity, performance. Therefore, design and Assembly departments for FAG bearings installed to fully study. Want to follow the standard installation. Standard project typically is as follows: (1) connected, clean the bearings and bearing components, (2), checking the size and finishing of correlative parts, (3), installation, and (4), after you install the bearing checking and (5), the supply of lubricants.
5, hope before will be installed, just open the bearing package. Grease lubrication, no cleaning, filled grease. Oil lubrication, ordinary or cleaning, however, the instrument or high speed bearing used, wash with clean oil, remove rust from coated bearings. Remove Rust bearings, rust-prone, so cannot be placed aside. Furthermore, into the bearings with grease, cleaning not used directly.
6, bearing installation methods vary depending on the bearing structure, fit, condition, in General, due to rotate, so inner need interference. Bearings with a cylindrical bore, press onto, or multiple-use and charging methods. Tapered bore, mounted directly on tapered shaft or sleeve installed.
7, when installed into the shell, General clearance and interference on the outer ring, normally, the press in the pressure, or have installed after the cooling method for shrink fit. With dry ice as a cooling agent, shrink fit occasion, moisture in the air condenses in the FAG bearing surface. Therefore, appropriate antirust measures are needed.