Rolling bearings have two structures: with and without cages. Large bearings are generally required to bear larger loads, and may not have cages, but fill the inner and outer raceways with rolling elements.

However:

Most small and medium-sized rolling bearings have cages. The main functions of the cages are:

The cages separate the rolling elements at equal distances and are evenly distributed on the circumference of the raceways to prevent collision and friction between the rolling elements;

Guide and drive the rolling elements to roll on the correct raceways;

The cage space can store grease;

In the split bearing, the rolling element and a ring are combined to prevent the rolling element from falling off.

Nylon bearing cages have low vibration, low noise, low heat generation, and high load capacity. They can increase the maximum speed and life of the bearing. They can usually work stably for a long time in the temperature range of -40℃+80℃. They are compatible with bearing lubricants. Nylon bearing cages are suitable for motors, machine tools, gear transmission shafts, pumps, compressors and other fields.

Nylon cages are now used more and more, so what are its advantages?

The nylon cage of the bearing is a new generation of products that replace copper cages and iron cages. Compared with metal cages, it has many advantages:

First, it is light in weight, which improves the flexibility of the bearing. If it is used in electrical appliances or power consumption products, it has a great effect on energy saving.

Second, it is light in weight. The centrifugal force generated by the bearing itself during rotation is relatively small, which is more suitable for high-speed working conditions.

Third, it has low noise and is the first choice for manufacturing silent bearings, especially for electrical appliances with high noise requirements. Nylon cages are the first choice.

Fourth, it has low friction and can effectively extend the service life of the bearing. The friction of the nylon cage on the rolling element is lower than the friction of the metal cage on the steel ball, which greatly extends the service life of the bearing.

Fifth, it is simple to manufacture, greatly improves production efficiency and reduces production costs.

Although the nylon cage has so many advantages, it also has many disadvantages in the use of bearings, mainly:

Nylon cage bearings can only work at room temperature.

The compressive strength of the nylon cage is not as strong as that of the metal steel plate cage, and the load capacity is not high.

Nylon cage bearings cannot be used in environments that are corrosive to them.

In short, metal bearing cages and nylon bearing cages have their own advantages and disadvantages. When choosing, you should choose according to the requirements of use. For example, if low-noise electrical appliances are required, you should choose nylon bearing cages. On equipment with high temperature, large load, and large vibration, stamped steel cages or machined copper bearings are preferred.