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The bearings often encountered problems and solutions  

2012-10-29 09:12:42|  分类: 技术 |  标签: |举报 |字号 订阅

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第一、对安装表面与安装场所的要求是什么? 
skf轴承内不能有杂质进入,如果轴承内有铁屑、灰尘等杂质进入,将使轴承在转动时产生噪声和振动,甚至会造成滚道与滚动体损伤导致轴承损坏。所以,在安装轴承之前,要保证安装表面和安装环境的干净清洁。
First, the mounting surface and installation site is it?
skf bearings impurities can not enter, scrap iron, dust and other contaminants from entering the bearing will generate noise and vibration bearing rotation even cause damage to the raceways and rolling elements lead to bearing damage. So, before installing the bearing to ensure that the mounting surface and installation environment clean clean.
第二、轴承在安装之前要清洗吗?
fag轴承表面涂有防锈油,安装前要用清洁的汽油或者煤油仔细清洗,再涂上干净优质的润滑油脂方可安装和使用。清洁度对轴承的使用寿命和噪声是有非常大的影响的。但必须特别提醒的是:全封闭轴承(带防尘盖或者密封圈的轴承)是不用清洗加油的。
Second, the bearings should be cleaned before installing it?
the fag bearings surfaces coated with anti-rust oil, use clean gasoline or kerosene before installation carefully cleaned and then coated with a clean, high-quality grease before installation and use. Cleanliness of the service life of the bearing and noise is a very large impact. But it must be reminded: fully enclosed bearings (with a dust cover or seal bearing) is no cleaning refueling.
第三、怎么样选择润滑油脂?
润滑的好坏严重影响着nsk轴承的转动和寿命,一般选择润滑脂的原则是:润滑脂由基础油、增稠剂及添加剂组成的,不同种类或者同一种类不同品牌的润滑脂的性能相差很大,允许的极限转速不同,在选择时要注意。润滑脂的性能主要由基础油决定,一般低粘度的基础油适用于低温、高转速的环境,高粘度的适用于高温、高负荷的运行环境。增稠剂也关系着润滑性能,增稠剂的耐水性决定润滑脂的耐水性。原则上,不同品牌的润滑脂不能混合在一起使用,而且,即使是同一种增稠剂的润滑脂,也会因添加剂不同对轴承带来坏的影响。
Third, how to select the grease?
The good and bad of lubrication serious impact nsk bearings rotation and life, the general principle is to select the grease: grease base oil, thickener and additives, very different from the performance of different brands of different types or the same type of grease Limiting speed allowed the choice of when to pay attention. Grease performance is mainly decided by the base oil is generally low viscosity of the base oil is applied to the environment of low-temperature, high-speed, high-viscosity suitable for high-temperature, high-load operating environment. Thickener also relates to the lubricating properties, the water resistance of the the water resistance decision grease thickeners. Principle, different brand of grease can not be mixed together, and, even if it is the same kind of grease thickeners, also because of different additives on the bearing bad influence.
第四、在润滑轴承时,油脂越多越好吗? 
润滑timken轴承时,油脂并不是涂得越多越好。轴承内过多的油脂将造成油脂的过度搅拌,进而产生温度过高。轴承填充润滑脂的数量以充满轴承内部空间30%~50%为宜。
Fourth, in the lubrication of bearings, grease better?
The lubricate timken bearings, grease is not coated better. The bearing too much oil will cause excessive oil mixing, and produce high temperature. The bearing filling quantity of grease inside the bearing space 30 is filled to 50% is appropriate.
第五、轴承的径向游隙越小越好吗? 
并不是所有的使用环境都要求轴承有最小的工作游隙,您必须根据使用条件选用适合的游隙。国标4604-93中,滚动轴承径向游隙共分五组:2组、0组、3组、4组、5组,游隙值由小到大排列,其中0组为标准普通游隙。标准径向游隙组适用于一般的运转条件、常规温度及常用的过盈配合;在高温、高速、低噪声、低磨擦等特殊条件下工作的轴承则应该选用大的径向游隙;对精密主轴、机床主轴所用轴承宜选用较小的径向游隙。
Fifth, the smaller the radial clearance of the bearing better?
Not all of the use of the environment bearings have a minimum working clearance is required under the conditions of use, you must choose a suitable clearance. GB 4604-93, the rolling bearing radial clearance is divided into five groups: Group 2, Group 0, Group 3, Group 4, Group 5, the clearance value small to large order, where 0 standard normal clearance. Standard radial clearance group applies to normal operating conditions, the conventional temperature and used interference fit; work under special conditions such as high-temperature, high-speed, low-noise, low-friction bearings should be selected large radial clearance; on precision spindle, the machine tool spindle bearings should use smaller radial clearance.

本文来源亚康轴承http://www.brand-bearing.com/

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