selling popular three-row cylindrical rollers slewing ring bearings made in china
How to choose the roller length of the three-row cylindrical rollers slewing ring bearing?
Slewing bearing, also called slewing bearing, plays an important role as a transmission component in many mechanical equipment. Among them, three-row cylindrical rollers slewing ring bearings are suitable for occasions with large axial load, radial load and large overturning moment. For example, in some large construction machinery and equipment, three-row cylindrical rollers slewing ring bearings are usually selected.
The three-row cylindrical rollers slewing ring bearings designed by LYMC company has many standard models. If the standard model cannot meet the load requirements, a non-standard design is required, that is, the load of the slewing bearing can be increased by increasing the diameter of the rollers. Load on a single roller.
The super-large diameter three-row cylindrical rollers slewing ring bearings can increase the load by lengthening the length of the roller. The length of the contact between the roller and the raceway increases after the length of the roller, and the load of the roller naturally increases.
But everything has advantages and disadvantages. The extended roller can be used on large-diameter slewing bearings, but it is not suitable for small-diameter slewing bearings. The channel of the three-row roller slewing bearing is a straight-line plane raceway.
On the small-diameter circular plane raceway, the linear velocity of the two ends of the long rollers is quite different. The rolling of the child in the raceway is not normal rolling. In the case of sufficient lubrication, it is rotating and creeping. However, if there is no restraint of the cage, the rollers will run horizontally and tilt in the channel, which will seriously affect the use.
In order to reduce the rolling of the rollers in the raceway, a long roller can be divided into two sections, and the extra long rollers can also be divided into three sections, and the flat rollers can be arranged in two or three rows side by side with an integral or segmented cage. , so as to avoid the linear velocity difference being too large and the rollers from creeping seriously.
When we need to increase the load of the three-row cylindrical rollers slewing ring bearings by increasing the diameter of the rollers or the length of the rollers, we need to choose according to the actual situation.
If you have any problems in this aspect during the selection and design, you are welcome to consult LYMC, our engineers will provide you with professional solutions, optimize the design, increase the stability of the slewing bearing, and improve the service life of the slewing bearing.
