Regular inspections of the bearings are important to maintaining the bearing in its best condition and can also reveal problems. Matters and related knowledge about the use of bearings in use.
First of all, we want to emphasize that it is important to keep the imported bearings lubricated and clean. So before we inspect the bearing, we should clean the surface of the bearing and then remove the parts around the bearing. It should be noted that the oil seal is a very fragile part, so extra care should be taken during inspection and disassembly. Do not apply excessive force to avoid damage to the parts. Then carefully check the bearing's oil seal and its surrounding parts. If it has been shown to be a bad symptom, be sure to replace it. A bad oil seal will cause damage to the bearing, causing the bearing cloud to be abnormal and causing the machine to stop.
Second, we also check the lubricant of the bearing. Lubrication is very important, not only for imported bearings, but also for all bearings. However, please note that it is not advisable to add too much grease to the bearings.
The inspection method for bearing lubricants is:
Apply a little bit of lubricant to the two fingers. If there is any contaminant, feel it. Or apply a thin layer of lubricant on the back of the hand and check the seal.
Then it is to replace the lubricant of the bearing.
Imported bearings lubricated with oil should be refilled with fresh oil and allowed to rotate at low speed for a few minutes if the old oil is drained. As much as possible, allow the oil to collect the contaminants from the wreckage and then vent the oil. Note: It is best to filter the oil before use. For bearings that use grease-lubricated bearings, the replacement of the grease should be avoided with a cotton joint to any part of the bearing. Since these residual fibers may be wedged between the rolling elements and cause damage, especially the application of small bearings requires attention to this problem.
(1) Bearing raceway sound and its control method
The rolling sound is a kind of slippery continuous sound that the rolling element rolls on the rolling surface when the imported bearing is running, which is the unique basic sound that all rolling bearings will produce. The general bearing sound is the rolling sound plus other sounds. The ball bearing's raceway sound is irregular, the frequency is above 1000Hz, its main frequency does not change with the speed, but its total sound pressure level increases with the increase of the speed. For bearings with large rolling sounds, the sound pressure level of the raceway sound decreases with the increase of viscosity; while for bearings with small raceway sound, the sound pressure level decreases when the viscosity increases to about 20 mm2/s or more. For the increase. The greater the rigidity of the bearing housing, the lower the total sound pressure level of the raceway sound. If the radial clearance is too small, the total sound pressure level and main frequency of the raceway sound will increase sharply as the radial clearance decreases. The method of controlling the rolling sound is to select a low-noise imported bearing, that is, a bearing with a small waviness, and carefully select the conditions of use. The raceway sound often affects the noise of the entire machine, and reducing the raceway sound can reduce the noise of the entire machine.
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