Bearings are widely used in mechanical equipment and can be found in transmission and joint positions. However, there are many types of bearings, such as thin-walled bearings, angular contact ball bearings, roller bearings and so on. For different types of bearings, there are significant differences in structure. So what are the differences between thin-walled bearings and thick-walled bearings?
What is a thin-walled bearing?
A thin-walled bearing refers to a bearing whose ratio of the outer diameter to the inner diameter is less than 1.25, that is, the difference between the outer diameter and the inner diameter of the bearing is very small, and the bearing wall is very thin. This type of bearing adopts a lightweight design, with a small cross-sectional size but a large diameter. Common ones include thin-walled angular contact ball bearings, thin-walled deep groove ball bearings, crossed roller bearings, etc.
Differences between Thin-walled Bearings and Thick-walled Bearings
1. Structural differences. The ratio of the inner and outer diameters of thin-walled bearings is small, and they are lighter in weight. The inner and outer rings of thick-walled bearings are thicker in size, with a more robust structure and higher load-bearing capacity.
2. Load-bearing capacity. The inner and outer rings of thin-walled bearings are relatively thin, and they are more suitable for light or medium-load applications. The load-bearing capacity of thick-walled bearings is stronger, and they can bear heavy loads or certain impact loads.
3. Rigidity. Thin-walled bearings have relatively low rigidity. In the case of improper installation or operation under overload, deformation problems are likely to occur. Generally, high installation accuracy needs to be ensured. Thick-walled bearings have high rigidity and stronger anti-deformation ability.
4. Precision grade. The precision of thin-walled bearings is usually at the P4/P5 level, and they are used in equipment with high requirements for operating precision. The precision of thick-walled bearings ranges from P0 to P2 levels, and an appropriate precision can be selected according to the requirements of specific equipment.5. Rotational speed requirements. The lightweight design of thin-walled bearings, with low weight, is conducive to high-speed rotational motion. Thick-walled bearings are heavy in weight, have high inertia and large friction. Under the same size conditions, their rotational speed is relatively low.
Thin-walled bearings have the characteristics of lightweight, high rotational speed, and low friction. Common types include the 718 series and 719 series of angular contact ball bearings, crossed roller bearings, etc. They are mainly used in fields such as aerospace, food processing equipment, robots, precision instruments, and machining machine tools. In the actual use process, the appropriate bearing model can be selected according to different application scenarios and performance requirements. When necessary, the help of professional bearing manufacturers can be sought.