Slide NSK bearing spindle w and connecting rod, using the most common fault is the wear-resistant alloying layer stripped or burned, and early wear of the bearing. If after a short run of diesel engines, bearing surface that is damaged or badly worn quickly, because most of them are not Bush per se, but due to the conditions of use or mark the part or technical condition arising out of the bad. There′s a poll suggests that causes bearing damage 44.9% is due to impurities, 13.4% is poor Assembly, 12.7% are concentric degree because of poor 10.8% is poor lubrication, 9.5% is overloaded and the rest are other factors such as corrosion.
　　Diesel engines in the process of starting, stopping, often in critical lubrication of NSK bearings enables continuous oil film, friction, direct contact. Even diesel engine in normal operation, as the load is unstable factors such as the axle and bearing would be hard to maintain a uniform and continuous liquid lubrication. In addition, the new diesel engine at the time of Assembly of not completely clearing the sand and iron filings, can be entered in the operation of dust, dirt, is accelerated wear, mainly responsible for burning Lava tile.
　　NSK bearing falling off was mainly due to fatigue damage. Because the size of the load bearing and direction changes with the time, when the load is oscillating, bearing friction surfaces cannot keep even continuously between the film, and the oil film pressure in pulse and change. At the time of minimum thickness of the oil film, generated within the local area of the bearing surface temperature, greatly reduces the fatigue strength of alloy layer. In addition, NSK bearings manufacturing Assembly in itself bad, is the direct cause of lead alloy layer peeling off.
　　Except for wear and spalling, sliding corrosion in NSK bearing is noticeable problems, largely depends on the quality of oil, temperature, pressure, and bearing loads. High load bearing areas most prone to corrosion, generated at high temperature metamorphism of lubricating oil of organic acids and sulfide corrosion is caused by bearing the direct cause.
　　NSK bearing burning loss, that is usually referred to "burnt", mainly due to the clearance is too small, poor lubrication and operation issues.