When Using Oilless Bearing Should Pay Attention To What The Place
When using oilless bearing should pay attention to what the place
oilless bearing are fine parts and are therefore very cautious in their use. Even if the use of high-performance oilless bearing, if improper use, can not achieve the desired performance results, and easy to make oilless bearing damage. Therefore, the use of oilless bearing should note the following:
First, adhere to the oilless bearing and its surrounding environment clean, even if the invisible dust into the oilless bearing, will increase the oil-free bearing wear, vibration and noise.
Second, the use of the device to be careful, do not allow strong stamping, do not allow hammer directly hit the oilless bearing, do not allow rolling through the transmission pressure.
Third, the use of appropriate and accurate device tools, try to use special tools, try to prevent the use of cloth and short fiber and the like.
Fourth, to avoid the corrosion of oilless bearing, direct access to oilless bearing, to wash away the hands of the sweat, and coated with high-quality mineral oil and then stop the operation, especially in the rainy season and summer to pay attention to rust. However, under some special operating conditions, oilless bearing can achieve better performance in the traditional calculation of life, especially in light load conditions. These special operating conditions are when the rolling surfaces (rails and rolling elements) are effectively separated by a smooth oil film and the contaminants are likely to cause damage to the appearance. In fact, under the ideal conditions, the so-called permanent oil-free bearing life is possible.
5, the life of oilless bearing, rolling the life of the oilless bearing to the number of revolutions (or a certain speed of work under the number of hours), definition: within this life of oilless bearing, Or rolling on the initial fatigue of the initial damage (peeling or defect). But both in laboratory experiments or in theoretical applications, can be clearly seen in the same working conditions of the appearance of the same oilless bearing, the theoretical life is very different. In addition there are several different definitions of oilless bearing "life", one of which is the so-called "working life", which means that an oil-free bearing can reach the theoretical life before damage is caused by wear and tear, usually not by fatigue Caused by wear, corrosion, seal damage and other reasons.
oilless bearing, oilless bearing that operate under sliding friction. oilless bearing work smoothly, reliable, no noise. In the liquid lubrication conditions, the sliding surface is separated by lubricating oil without direct contact, but also can greatly reduce the friction loss and surface wear, the film also has a certain vibration absorption capacity. But start frictional resistance. The shaft is supported by the oil-free bearing part called the journal, and the part that matches the journal is called the bearing. The friction-reducing material layer cast on its inner surface in order to improve the frictional properties of the pad surface is called an oil-free bearing lining. Bushing and oil-free bearing lining material is collectively referred to as oil-free bearing material. oilless bearing are generally used in high-speed, heavy-duty, high-precision or intermittent working conditions.
oilless bearing work is the occurrence of sliding friction; rolling friction depends mainly on the size of the manufacturing accuracy; and oil-free bearing friction depends on the size of the oil-free bearing sliding surface material. oilless bearing are generally self-lubricating work surface; oilless bearing in accordance with the material is divided into non-metallic oilless bearing and metal oilless bearing. Non-metallic oilless bearing mainly plastic oilless bearing, plastic oilless bearing are generally made of better performance of engineering plastics; more professional manufacturers are generally with engineering plastics self-lubricating modified technology, through the fiber, special Lubricants, glass beads and so on to the engineering plastics self-lubricating enhanced modification to achieve a certain performance, and then modified plastic through injection molding into self-lubricating plastic oilless bearing.