Due to the relative motion of the rolling element and the Raceway and dirt dust intrusion, the rolling element and the Raceway surface wear. When a large amount of wear and increased bearing clearance, noise, vibration, reducing the running accuracy of FAG bearings, thus directly affecting the precision of the host. Because bearings used in precision machinery, qualify the slewing bearing life can wear.
Without the FAG bearings under excessive stress environment, agreed to between the exterior ring angle error depends on:
1. Wheel bearing Raceway Raceway is sound and its control method when the bearing operation, rolling rolling rolling on the pavement and a slippery continuous noise, occurs is all rolling bearing-specific basic sound. General bearing rolling road sound with other sounds. Ball bearing roller is irregular, frequencies in the above 1000Hz, the frequency of rate changes with the speed, but the total sound pressure level increases with the acceleration of the speed of. Roller bearings, its acoustic sound pressure level Raceway with the increase and decrease of viscosity; and say small turntable bearings, their sound pressure level in the viscosity increases to about 20mm2/s above, from reduction to increase. Greater the rigidity of bearing, roller lower the total sound pressure level sound. Radial clearance is too small, Raceway total sound pressure level and frequency of the sound will surge as the reduction in radial internal clearance. Control method of Raceway: Optional low noise bearings FAG bearing corrugated-small, carefully selected conditions of use. Acoustic noise affecting the entire machinery of the Raceway, Raceway reduction can reduce the noise of the machinery as a whole.
2. Sound of impact rolling and its control method for large type cylindrical roller slewing bearings or bearing in low-speed operation under purely radial load, smaller due to the centrifugal force of the rolling, load-free area in the roll cage of rolling elements will shocks or road noise. But as the speed increases, this noise will disappear. On the rolling control method of pulse sound: appropriate reduction of radial clearance, reasonable structure and material compliance in FAG bearings with cage.
3. Creak and controlling methods of the slewing bearing creak is a cylindrical roller bearings on all occasions the possibility of harsh metal sound, mostly in the larger models of grease lubrication bearings, more deterioration of the base oil grease, oil hardly occurs. In addition, more prone to occur during the winter months, when subjected to a purely radial load, and susceptible to radial clearance, and with models of different sizes, occur at a specific speed range easily, both continuous and intermittent. External ring road, take the special processing methods can prevent the emergence of creak, when necessary, the choice of this FAG bearing, or reduce the slewing bearing radial clearance, using high performance grease and parts to match increasing bearing rigidity.