In terms of the long duration of rolling bearing rotation, FAG bearing rotation lasts a long time, stops slowly and has good flexibility. On the contrary, if the rotation time is short and the stop is sudden, the flexibility is not good. It is not easy to measure the radial clearance of the rolling bearing from the aspect of the radial clearance of the fag bearing, because the measuring force will cause the elastic deformation of the ring of the rolling bearing, the rolling body itself and its contact.Several methods of measuring the clearance and flexibility of fag rolling bearing
In terms of the structure and size of fag bearing, due to the different structural types and sizes of rolling bearing, there should be different requirements for its rotation flexibility. For example, single row centripetal ball bearings and single row centripetal thrust ball bearings, these fag bearings are relatively light when rotating due to the small contact area between the rolling element and the ferrule, while double row centripetal spherical bearings and thrust roller bearings,.
due to the large contact area between the rolling element and the raceway and the small weight of the outer ring, although a certain load is added when checking their rotation flexibility, their lightness is still not as good as that of single row centripetal ball bearings.Several methods of measuring the clearance and flexibility of fag rolling bearing
Fag oil-free bearing configuration includes not only rolling bearings, but also bearing related components, such as shaft and bearing seat. The lubricant is also a very important part of the bearing configuration, because the lubricant should be wear-resistant and corrosion-resistant, so that the oil-free bearing can play its full role. In addition, the seal is also a very important component.
The performance of the seal is very important for the cleaning of the lubricant. Keeping clean has a profound impact on the service life of bearings, which is why lubricants and seals have become part of fag bearing business.Several methods of measuring the clearance and flexibility of fag rolling bearing
Select the basic type, tolerance grade and clearance of oil-free bearing according to the working conditions of bearing (including load direction and load type, speed, lubrication mode, coaxiality requirements, positioning or non positioning, installation and maintenance environment, ambient temperature, etc.);
Determine the bearing model through calculation according to the working conditions, stress conditions and service life requirements of the bearing, or select the bearing model according to the service requirements, and then check the service life;Several methods of measuring the clearance and flexibility of fag rolling bearing
Check the rated load and limit speed of the selected bearing.Several methods of measuring the clearance and flexibility of fag rolling bearing
The main factors considered in selecting fag oil-free bearing are ultimate speed, required service life and load capacity. Other factors are helpful to determine the bearing type, structure, dimension, tolerance grade and final scheme of clearance requirements.
Several methods of measuring the clearance and flexibility of fag rolling bearing
All kinds of rolling bearings have different characteristics and are suitable for different applications of various machines. When selecting the oil-free bearing type,
The following factors should generally be considered. Generally, thrust bearing and angular contact bearing are selected for bearing thrust load, ball bearing is usually used for high-speed applications, and roller bearing is selected for bearing heavy radial load.
In short, the selection personnel should select the appropriate type from different manufacturers and a large number of bearing products.Several methods of measuring the clearance and flexibility of fag rolling bear
space and position of the machine occupied by the bearing
In mechanical design, the size of the shaft is generally determined first, and then the rolling bearing is selected according to the size of the shaft. Usually, ball bearings are used for small shafts and roller bearings are used for large shafts. However, when the bearing is limited in the diameter direction of the machine, needle roller bearings, ultra light and ultra light series ball or roller bearings are selected;
When fag oil-free bearing is limited in the axial position of the machine, narrow or ultra narrow series ball or roller bearings can be selected.Several methods of measuring the clearance and flexibility of fag rolling bearing
the magnitude, direction and nature of the load on the bearing
Load is the main factor in selecting oil-free bearing. Roller bearings are used to bear heavy loads, ball bearings are used to bear light or medium loads, and bearings made of carburized steel or bainite quenching can bear impact and vibration loads.
In terms of load direction, deep groove ball bearing, cylindrical roller bearing or needle roller bearing can be selected when bearing pure radial load. When bearing small pure axial load, thrust ball bearing can be selected; When bearing large pure axial load, thrust roller bearing can be selected. When the bearing bears the combined radial and axial load, angular contact ball bearing or tapered roller bearing is generally selected.Several methods of measuring the clearance and flexibility of fag rolling bearing
bearing centering performance
When the center line of the shaft is different from the center line of the bearing seat, there is an angle error, or the rigidity of the shaft is small due to the large distance between the two supports of the shaft, which is easy to bend or tilt under force, the self-aligning ball or self-aligning roller bearing with good self-aligning performance and outer ball bearing can be selected. This type of bearing can maintain normal operation when the shaft is slightly tilted or bent.
The amount of work required depends on whether you have similar bearing matching experience. When there is a lack of experience, special requirements, or special consideration needs to be given to the cost of bearing configuration and any other subsequent shape, more work needs to be done, such as more accurate calculations and / or tests.
In the chapter following the comprehensive technical introduction, the designer of oil-free bearing configuration will see the necessary basic information provided in the order of general requirements. Obviously, it is impossible to include all the information required for every conceivable fag bearing application.
For this reason, we will mention comprehensive application engineering services in many places, including technical support for correct selection of bearings and how to conduct complete bearing configuration calculation. The higher the technical requirements for bearing configuration and the more limited the experience of using bearings in specific applications, the more this service should be utilized.Several methods of measuring the clearance and flexibility of fag rolling bearing