我厂生产的Y7520W 螺纹磨床砂轮主轴滑动轴承为马更生(MacKenSen)结构形式,轴承间隙为2～3丝,象这样小的间隙,过去我们采用过90%的煤油、10%的10号或20号机械油(俗称9:1混合油)来润滑,在一般情况下,供砂轮主轴使用中不产生较大的温升。但是,由于加入了大量的煤油,所以油性很差,润滑效果不好,容易引起主轴和轴承的磨损。又因为煤油往往存在腐蚀性(商品出厂规格中没有腐蚀试验要求), I produced Y7520W thread grinder wheel spindle bearings for the Ma Kesheng (MacKenSen) structure, bearing clearance of 2 to 3 wire, such a small gap, in the past we have used 90% of kerosene, 10% of the 10 or 20 No. mechanical oil (commonly known as 9: 1 mixed oil) to lubricate, in general, for the use of wheel spindle does not produce greater temperature rise. However, due to adding a large amount of kerosene, so poor oil, lubrication is not good, easily lead to spindle and bearing wear. And because kerosene often corrosive (no ex-factory product corrosion test requirements)