INA thrust self-aligning roller bearing failure of 5 kinds of first aid knowledge of lubrication way - bearing

Contact fatigue spalling occurred in INA 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. Due to spalling surface expands gradually, and often to deep extension, forming deep spalling. Deep spalling is contact fatigue failure of fatigue source. Continuous wear will cause thrust self-aligning roller bearing parts damaged gradually, and ultimately result in the loss INA 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 bearing rotating accuracy and will not operate properly. Wear failure is one of the common failure modes of all kinds of bearings, according to the wear and tear is usually divided into one of the most common form of abrasive wear and adhesive wear. Oil lubrication methods include: 1. Oil drip lubrication oil drip lubrication is suitable for need to ration oil thrust spherical roller bearing parts, drip oil every 3 - general A drop of it is advisable to 8 seconds, too much oil will cause INA bearing temperature increased. 2 circulating oil lubrication oil pump in the conversion of the filter oil transfer to the bearing parts, through the bearing lubricating oil filter cooling after use. Because of the circulating oil can take away a certain quantity of heat, cooling the INA bearing, therefore method is suitable for high speed bearing parts. 3. Oil bath lubrication oil bath lubrication is the most common lubrication method, suitable for low, medium speed, bearing lubrication, thrust self-aligning roller bearing part of immersion in the slot, the bearing parts of lubricating oil by rotating, and then flow back to the oil level of oil tank should be slightly lower than the lowest at the center of the roller. 4. Spray lubrication with oil pump nozzle shot into the bearing, the oil in the high pressure into the INA bearing the bearing at the other end into the oil in the tank. When bearing at high speed, rolling element and cage with high rotate speed makes the surrounding air, the air in general it is difficult to be sent to the bearing lubricating oil lubrication method, use the method of high-pressure jet spray the lubricating oil must be taken to thrust spherical roller bearing, the position of the nozzle should be placed between inner ring and retainer center. 5. Spray lubrication with dry compressed air after the sprayer and lubricating oil mixed form oil mist, jet thrust self-aligning roller bearings, can effectively make the INA bearing cooling airflow and can prevent the intrusion. This method is suitable for high speed, high temperature lubrication bearing parts.