Nature of load and IKO deep groove ball bearing fault detection and elimination method

Applied to IKO bearing load, according to the amount of load can be divided into light load and normal load, heavy load, according to the load quantity of timing changes can be divided into static load and variable load, impact load. In addition, according to the loading direction is divided into rotating load ( Also known as the circular load) The static load ( Also called dot load) Or to the load. Rotating load, static load or change to load, not applied to IKO bearing the nature of the load itself, but for small deep groove ball bearing ring load phenomenon observed. Within the decision, with the outer ring, want to see its first are rotating load and static load, and then judge USES the interference fit, or clearance fit. a) Inherent noise: race with all sorts of IKO bearings and rolling friction ( Cylindrical roller bearing) Is inherent in the sound, rolling bearing raceway is by the elastic properties of the rolling element and raceway contact, when the deep groove ball bearing rotating roller rolling over on the rolling path of a continuous and a sophisticated sound; Abnormal sound of rolling friction can be issued a 'tickle, tickle' uncomfortable metal friction abnormal sound, smooth and good, won't make such a sound. So in normal condition is not a problem, as long as the noise increased after must pay attention to. b) Noise is related to the bearing manufacturing: here including aircraft noise and tremolo, adhere to the main attack aircraft noise in ball bearings and bearings, as deep groove ball bearing rotates due to adhere to the vibration of the frame and frame and roller impact makes a noise. The sound is cyclical. Tremolo ( All kinds of bearing) There is a certain frequency of sound, it is because of the raceway surface waviness of provoked vibration. This phenomenon is the most common problem, we later demand of can. c) Using improper provoked noise: about various bearing all exist. When the deep groove ball bearing raceway appearance or rolling table in vitro was bruised, pit, rust, so can produce a certain cycle of noise and vibration. When bearing in operation will produce contamination noise have dust intrusion. This noise is cyclical, also with vibration, its sound size is not fixed, sometimes no. Processing, step down tight sleeve, readjust the matching of the shaft and the inner ring tightness, replace the bearing after the clearance from 0. 10mm。 To restart the installation fan, bearing vibration value and operating temperature back to normal. Bearing internal clearance is too small or poor parts design and manufacture of precision, is an extension of deep groove ball bearing operating temperature on the high side, for the convenience of the fan equipment installation; Repairing and maintenance. Commonly used more on the design of set set of bearing inner ring with tapered bore the bearing bearing, but also easily because of the negligence of the installation program problem. Especially the adjust of the appropriate clearance. Bearing internal clearance is too small. Operating temperature rise sharply: tapered bore the bearing inner ring is too loose and set fit, IKO bearings for loose fitting surface occurs easily and failure loss in a short period. As for large IKO bearings, sometimes to exempt from packing and unpacking is difficult, also have use will be rotating load-bearing ring of clearance fit method. Such a case, shaft with a hard material, the surface of the elaborate processing, add sufficient lubricant, utmost ground to skidding damage.