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我厂1台武汉重型机床厂生产的M84160-2型轧辊磨床于1987年8月投用,使用不到1年,主轴前轴承(7180)出现问题,经检查发现滚珠保持架磨损、变形都很严重,造成机床振动、噪声异常。一、前轴承损坏的原因如此大的轴承所以损坏,我们认为主要原因是:床头箱内,13个润滑点靠1台容量只有1.5L的手动黄油泵压送黄油是不够的,尤其对距油泵最远的主轴轴承,常因供油不足而处于无油状态进行干摩擦。原润滑系统示意及主轴轴承的注油点见图1和图2。从图2可以看出,对主轴前后轴承同时供油的
I plant a heavy machine tool plant in Wuhan M84160-2 type roll grinder in August 1987 put into use, use less than 1 year, spindle bearings (7180) problems, the ball cage inspection found that wear and deformation are very Serious, resulting in machine vibration, noise abnormalities. First, the cause of damage to the front bearing so large bearings so damaged, we think the main reason is: bedside box, 13 lubrication points by a capacity of only 1.5L manual butter pump pressure butter is not enough, especially for the distance Pump the furthest spindle bearings, often due to lack of oil in the oil-free state for dry friction. Schematic diagram of the original lubrication system and the spindle bearing Grease point shown in Figure 1 and Figure 2. Can be seen from Figure 2, before and after the spindle bearing oil at the same time