The function and method of slewing bearing lubrication
The slewing bearing is one of the most widely used large bearings in the market. Many construction machinery and equipment are inseparable from the slewing bearing. We all know that the bearing needs to do daily maintenance and maintenance during the use process, and maintaining its good lubrication condition is an important issue. So what are the functions of slewing bearing lubrication? What are the advantages and disadvantages of different lubrication methods? Next, the editor of Hengguan will introduce the system to you.
1. The role of slewing bearing lubrication
1. Reduce friction and wear
The lubricating grease is filled into the mutual contact parts of the bearing rings, rolling elements and cages to prevent the metals of each component from contacting each other, thereby reducing friction and wear well and maintaining the running performance of the bearing.
2. Extend fatigue life
The lubrication condition of the bearing in operation is closely related to its fatigue life: if the lubrication condition of the rolling contact surface is good, the service life will be prolonged; if the lubricating oil viscosity is low and the lubricating film thickness is insufficient, resulting in insufficient lubrication, the service life will be shortened.
3. Discharge frictional heat and cool down
Lubrication methods such as the circulating oil supply method can use oil to discharge the heat generated by the friction of the bearing itself or the heat transmitted from the outside, and play a cooling role to prevent the bearing from overheating and the aging of the lubricating oil itself.
4. Prevent foreign matter, etc.
Good lubrication of the slewing bearing can prevent foreign matter from entering the bearing, and also has a certain effect on preventing the bearing from rusting and corrosion.
Slewing bearing
2. Lubrication method of slewing bearing
1. Thin oil lubrication
Advantages: thin oil has good fluidity, small internal friction coefficient, low energy consumption to overcome friction, easy to enter the friction surface of each lubrication point, better cooling effect, and can remove impurities on the friction surface or grinding products. Metal particles are taken away.
Disadvantage: The thin oil lubrication method has higher requirements for sealing, and the oil film cannot withstand large unit pressure.
2. Concentrated oil lubrication
Advantages: The slewing bearing is lubricated with concentrated oil and has a wider range of adaptation to load properties and movement speed changes; in addition, it is easy to seal, has less loss, and is less affected by temperature.
Disadvantages: Concentrated oil lubrication has a large energy loss because of its poor fluidity and large internal friction coefficient. In addition, when it works at high temperature for a long time, it is easy to lose its lubricating performance. It is necessary to do daily inspections and grease replenishment and replacement.
The above are the functions and common methods of slewing bearing lubrication summarized by us. I hope to inspire you in the maintenance and maintenance of bearings. If you have other questions or needs about slewing bearings, you can contact by leaving a message or by phone. We, Luoyang Hengguan Bearing Technology Co., Ltd. are committed to providing you with satisfactory solutions!
