Bearing grease is a widely used lubricant, which is often used in bearing repair and maintenance to ensure the normal operation of each running part of the equipment, and is an important factor affecting the bearing life. Bearing grease is composed of base oil, additive and thickener, which mainly plays a role in reducing friction, heat dissipation, shock absorption and noise reduction. For high-speed rolling bearings, the stability of grease and canal formation, which will be discussed below, are very important. In order to reduce the running of bearings, especially the starting running of bearings, it is advisable to choose low consistency grease as far as possible for bearings with general speed not too high.
Bearings often need grease in the process of installation and maintenance, especially at the beginning of bearings. After a period of use, bearings need frequent maintenance. Please choose regular and genuine grease. In order to use grease correctly, it is necessary to know the movement of grease in bearings. The movement of the grease filled in the rolling bearing, with the rotation of the bearing, can be roughly divided into two stages. As long as the viscosity of the base oil is appropriate, the load resistance of the grease is no problem. In boundary lubrication or extreme pressure lubrication conditions, mainly rely on additives to improve the wear resistance and extreme pressure performance, to meet the requirements of lubrication conditions.
Bearing sealing aims to prevent the leakage of lubricants in bearing parts, and prevent the invasion of dust, moisture, foreign bodies and other harmful objects into the bearing, so that the bearing can operate safely and sustainably under the required conditions. It can also reduce the friction and wear of bearing parts, and does not produce high temperature burning. Lubrication method, lubricant is appropriate or not, directly greatly affect the performance and durability of bearings. In general, grease has the following functions.
1) Reduce friction and wear;
2) Conduction and removal of friction heat bearing heat due to friction, need to rely on the intermediary of lubricant to conduct heat to it or take away, so that the bearing temperature drops, lubricant, bearing can maintain long-term operation;
3) Ease the concentration of local stress;
Bearing is a common mechanical part in life, there are a variety of types, can be classified according to the structure and type, the normal operation of bearings requires certain grease, to achieve the effect of lubrication, appropriate lubrication and protection plan, play the focus of the maximum life of bearings. When bearing damage may lead to unexpected equipment downtime. In order to ensure the healthy operation of equipment, in addition to relying on high-quality bearings, we should also pay attention to the operating environment, correct installation and regular maintenance.