Analyzing the outer spherical bearing load failure notice

Outside the spherical bearing a rotation, inner ring and outer ring raceway surface, with rolling body is rolling contact, as the dark side, thus orbit trajectory are attached to the raceway surface does not belong to abnormal, which can be learned that load conditions, so at the time of removal of TIMKEN bearings, please keep close attention and observation on the surface of the raceway. If you look closely at orbit, will know that only bear radial load, bear the axial load of big, inherit the torque load, or extreme rigid in bearing box is not equal. Can check if the bearing with unexpected load and installation error is too big, etc. , shall be investigated and be outside the spherical bearing hold clues to the cause of damage. Lubrication is very important, not only for TIMKEN bearings, also for all of the bearing. But please note that the bearing should not add too much grease. And then replace the bearing lubricant. Use after xie used engine oil, engine oil lubrication bearing if possible, should be impregnated with fresh oil and let the machine in low speed rotation for a few minutes. As far as possible make the oil collecting residual pollutants, and then purging in addition to the oil. And the use of grease lubrication bearing in replacing grease, used by Joe in addition to the editor should avoid contact with cotton to any part of the spherical bearing. Because these residues fiber may wedged in between the scroll and damage, especially the application of small bearing more need to pay attention to this problem. Check the bearing, don't let bearing exposure to pollutants or moisture environment. If the job is interrupted, should with oil film, paper or similar material by machine. If don't have to remove and may perform inspection of cleaning without masking of bearing, to clean with brush with petroleum solvent coating, then dry with a lint-free cloth or with compressed air to blow dry, Be careful not to let the bearing component starting rotation) 。 With a little mirror, and the probe used in the similar to the dentist to check the bearing of the orbit plane, retainer and beads. Do not block or dust cleaning encryption TIMKEN bearing; You just wipe the outer surface. If the bearing is need to replace damaged situation. During regular maintenance downtime time replacement bearings than the array bearing damage of selected into a sudden stop loss is much more economical. Contact fatigue failure refers to the bearing working surface under the role of alternating stress and failure. Contact fatigue spalling occurred in bearing working surface, often accompanied by fatigue crack, first of all, from the maximum cyclic shear stress under contact surface, and then extended to form a different flake shape, such as dot to pitting corrosion or pitting spalling, peel into small sheet according to the shallow flaking. Refers to the relative sliding friction between the surface abrasion failure lead to constant wear and tear of the working surface of the metal and the failure. Continuous wear will cause bearing parts damaged gradually, and ultimately result in the loss bearing dimensional accuracy and other related issues. Wear may affect the shape change, the increase of fit clearance and working surface morphology change, may affect the lubricant or make its pollution to a certain degree of lubrication function is lost, so that loss of outer spherical bearing rotating accuracy and will not operate properly. Wear failure is one of the common failure modes of all kinds of TIMKEN bearings, according to the wear and tear is usually divided into one of the most common form of abrasive wear and adhesive wear. 1. Inside is rotation is to the cylindrical roller bearing used correctly and the outer orbit when the radial load. 2. Is the inner ring and outer ring relative tilt, the deflection of shaft orbit, orbit, raceway surface on its longitudinal shade, on the load coil outlet has a tilted orbit, double row tapered roller bearing inner ring spinning. 3. Said only bear radial load of outer trajectory. When L said only by the axial load of the track. Inner ring and outer ring tilted relative big bear radial load, only its trajectory deviation in two columns of rail surface 180. The location ( m） 。