There are some obvious differences between ultra-thin-wall bearings and thin-wall bearings in structure and application. The following is a detailed comparison:

1. Definition and structure

Ultra-thin-wall bearings are bearings with ultra-thin outer and inner rings. The ratio of the outer diameter to the inner diameter is usually smaller to achieve a thinner bearing wall.
Ultra-thin-wall bearings have a compact structure and a small cross-sectional size, but while maintaining high rigidity and load-bearing capacity, they have the advantages of lightweight and space saving.

Thin-wall bearings refer to bearings with a ratio of the inner diameter to the outer diameter less than a specified value, usually below 1.25.
The ratio of the outer diameter to the inner diameter of the bearing is small, making the bearing wall thinner, hence the name.
Thin-wall bearings have a simple structure and are easy to use. They are mainly used to bear radial loads.
2. Performance and application

Ultra-thin-wall bearings
Lightweight design: Ultra-thin-wall bearings have a smaller cross-sectional thickness, which significantly reduces the weight of the bearing and is suitable for applications with strict weight requirements.
High precision and high rigidity: Ultra-thin-wall bearings use high-precision manufacturing processes to meet the equipment's requirements for high precision and provide high structural rigidity.
Space saving: Provide excellent performance in a limited space and optimize equipment layout.
Application areas: Ultra-thin-wall bearings are mainly used in scenarios with high precision, high rotation speed, limited space and lightweight requirements, such as aerospace, robots, medical equipment, semiconductor equipment and precision instruments.
Thin-walled bearings
Save space and weight: Compared with other types of bearings of the same size, thin-walled bearings can save space and reduce weight.
Reduce friction: Thin-walled bearings have a small friction coefficient and a high limit speed, which are suitable for applications with higher speeds.
Bear a variety of loads: When the radial clearance is increased, thin-walled bearings have certain performance of angular contact ball bearings and can withstand combined radial and axial loads.
Application areas: Thin-walled bearings are widely used in aircraft, aerospace, astronomical instruments, food processing equipment, glass production equipment, rotary tables, machine tools, packaging equipment, optical scanning equipment, radar, satellite communication equipment, textile machinery and other industries.

Structural differences: Ultra-thin-walled bearings have a thinner cross section and a more compact structure. Although thin-walled bearings also have the characteristics of thin walls, their cross-sectional thickness may be slightly larger in comparison.
Differences in performance and application: Ultra-thin-wall bearings perform better in terms of lightweight, high precision and high rigidity, and are suitable for applications with strict requirements on weight and precision; while thin-wall bearings focus more on saving space, reducing friction and bearing a variety of loads, and are suitable for applications with high speeds and the need to withstand complex loads.