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The load applied to the FAG bearings, in accordance with the load capacity can be divided into light load, normal load, heavy load, according to the time variation of load capacity can be divided into static load, variable load, impact load. In addition, according to the loading direction is divided into the rotating load (or load ), static load ( also known as point load ) or to load.
Rotating load, static load or variable load, load bearing properties not applied to the FAG itself, but to a deep groove ball bearing rings observed load phenomenon. The outer ring in the decision, as we see fit, which belongs to the rotating load or static load, and then judge the interference or clearance fit.
A ) inherent noise: rolling road sound with a variety of FAG bearings and rolling friction sound ( cylindrical roller bearing ) is the natural sound of rolling bearing, rolling road sound is produced by the elastic properties of roller and raceway contact time, when the rotation of deep groove ball bearings, rolling body raceway and rolling in and out a continuous and sophisticated sound; not normal rolling friction sound can be issued a " creak creak of metal not comfortable, " such as friction abnormal sound, smooth, good will not make such a sound. So under normal circumstances is not a problem, as long as the noise increases after the need to pay attention to.
B ) and bearing manufacturing related noise: here include the stick noise and vibrato, stick noise mainly in ball bearings and bearing, deep groove ball bearing rotation when due to adhere to the frame vibration and adhere to the frame and the rolling body attack impact will sound. This sound is cyclical. Vibrato ( bearings ) is there is a certain frequency sound, is due to vibration waviness caused larger raceway face. This phenomenon is the most common problem, we need a lot of attention to the.
C ) noise using improper: about all kinds of bearings. When deep groove ball bearing raceway surface or rolling body appearance was bruised, indentation, rust, it will produce noise and vibration have certain cycle. When the bearing is intrusion of dust will be generated when the dirt and noise in operation. The noise is not periodic in nature, also accompanied by vibration, the sound size is not fixed, sometimes not.
Processing, retreat under tight sets, readjust the matched with the inner axial compactness, replace the bearing clearance after 0.10mm. The new installed to start the blower, bearing vibration and temperature returned to normal.
Bearing internal clearance is too small or parts design and manufacture of precision is poor, is the main cause of the extension of deep groove ball bearing operating temperature higher, for the convenience of the wind machine equipment installation; overhaul and maintenance. In the design of the adapter sleeve bearing inner ring of the bearing with taper hole, but also easy for installation on negligence but the problem. Especially the adjustment appropriate gap. Bearing internal clearance is too small. The operating temperature rise rapidly: the inner ring of the bearing hole and the locking sleeve is too loose, FAG bearings with surface due to loosening and failure loss in the short term.
As for the large FAG bearings, sometimes in order to avoid assembly, disassembly difficulty, also have a method using ring gap will bear the rotating load matching. In this case, the shaft with hard material, surface carefully processing, add the lubricant, the maximum to prevent skidding damage.
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