Shaft and bearing lubrication system causes damage and injury

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1, damage and injury caused by poor lubrication effect phenomenon: thin section bearing
There will be a variety of shaft and bearing lub rication effect mainly the fault feature. If the oil pressure is low, the local will be due to the direct contact between the shaft and the bearing dry friction caused by the movement of surface damage and damage, blue shaft surface at this time. Lubricant failure or the pressure built up, the movement of the surface completely lost the protection of the oil film in direct contact with dry friction. Melting temperature increases bearing alloy layer, and promptly shut down to produce the "hold tile phenomenon, the not timely downtime will cause more serious damage to the parts.
The cause: rupture of the oil level is too low or lubricants Road; suction strainer, oil duct, the hole is clogged; Oil oil pump wear or leaks in the suction line; pressure regulating valve to limit pressure valve damage; engine idling time too long; after starting the engine without heating operation directly to the high-speed operation and a full-load operation; full load operation, in the case of a higher temperature without the empty load low speed operation cooling is shut down, so that the heat deposition in the engine, The temperature rises; selection criteria is not in accordance with the regulations of oil and replace the oil regularly. buy bearing
2, the lubricating oil in the water, causing the shaft and bearing damage and injury:
Lubricating oil in the water on the shaft and bearing damage is more serious, because the water will Deterioration of grease to destroy the film. Hole shape in the gray matter, and the edge of the friction surface of the pad surface of the alloy layer is formed on the alloy surface black corrosion products, so that the the bearing alloy friction surface irregular pits and partial flaking.
The causes: cylinder seals bad seal, cooling fluid into the crankcase; damage to the engine oil radiator, oil and water mixed; lubricating the water from enteri ng or poor sealing fuel filler and dipstick, rinse the car and when it rains water enters the crankcase; water in the fuel into the crankcase. So every time you start the engine, be sure to check the oil surface and oily, it must be done.
3, the fuel due to the damage of the shaft and bearing lubricants: machine bearing
Fuel into the crankcase, make lubricants thinning film thinning to reduce the lubricating effect and cause corrosion of the shaft and bearing. The bearing alloy surface is dark green, slightly cavitation. Particular, is a byproduct of the combustion of the fuel with a higher sulfur content, fuel into poorly ventilated crankcase generated sulfuric acid substances be the surface of the shaft caused severe cavitation.
The causes: excessive of the oil supply of the fuel system, the fuel is injected into the combustion chamber can not complete combustion; enough into the air intake is blocked fuel combustion; fuel nozzle seal failure to penetrate the crankcase; fuel in the cylinder head Road stomatal trachoma or crack; idle automatically transfer time is too long, the engine temperature low fuel is not completely burned. single ball bearing