However, not all loads exert forces on bearings in the same way. There are two different loads: radial and thrust.
Radial loads, such as pulleys, only exert weight on the bearing, so the bearing rolls or rotates due to tension. The thrust load is obviously different and exerts pressure on the bearing in a completely different way.
If the bearing (think of the tire) rolls over (now think of the tire swing) and is subjected to complete force at this angle (think of three children sitting on the tire swing), this is called thrust load. Bearings used to support high stools are examples of bearings that only bear thrust loads.
Many bearings are susceptible to radial and axial loads. For example, a car tire bears a radial load when driving in a straight line: due to the tension and the weight supported by the tire, the tire rolls forward in a rotating way.
Extended data:
Bearing classification:
1, ball bearing
Ball bearings are very common because they can bear radial and axial loads, but they have only a small amount of weight. They exist in various applications, such as roller blades and even hard disk drives, but they are easily deformed if overloaded.
2. Roller bearing
Roller bearings are designed to carry heavy loads-the main roller is cylindrical, which means that the load is distributed over a larger area, so the bearing can bear more weight. However, this structure means that the bearing can mainly bear radial load, but not suitable for bearing thrust load.
For applications with space problems, needle bearings can be used. Needle roller bearings are suitable for small diameter cylinders, so they are easier to install in smaller applications.
3. Thrust ball bearing
These types of bearings are designed to handle thrust loads almost exclusively in low-speed and low-weight applications. For example, bar stools use ball thrust bearings to support the seats.
4. Roller thrust bearing
Roller thrust bearing is very similar to ball thrust bearing and can bear thrust load. However, the difference lies in the weight that the bearing can bear:
Roller thrust bearing can bear larger thrust load, so it can be used in automobile transmission. They are used to support helical gears. Gear support is usually a common application of roller thrust bearings.
5. Tapered roller bearing
This type of bearing is designed to handle large radial and axial loads-because of its versatility, they exist in automobile wheels, because wheels are expected to bear large radial and thrust loads.
Reference source: Baidu Encyclopedia-Bearings