What are the common types of cages in deep groove ball bearings?

Deep groove ball bearings are an important component widely used in mechanical equipment, and their performance and reliability are often affected by cages. In deep groove ball bearings, the choice of retainer is directly related to the bearing's operating performance, service life and ability to adapt to different working environments.

Steel retainers are the most common type of deep groove ball bearings. This kind of retainer has high rigidity and wear resistance, can withstand large loads, and is suitable for high-speed and high-load working environments. Due to the high material density of the steel cage, it is relatively heavy, which may increase the rotational resistance of the bearing and affect the performance of the bearing.

Nylon retainers are widely used in certain specific application scenarios because of their lightweight, low friction, and low noise. However, nylon materials may soften or deform in high-temperature environments, affecting the service life of bearings, so their scope of application is limited.

Copper retainers are favored for their good resistance to heat and corrosion. This kind of retainer can maintain stable performance in high temperature environments and is suitable for bearing applications under some high temperature working conditions. Fiber-reinforced resin retainers have high strength and good wear resistance, can withstand larger loads, and are suitable for some working environments that require higher bearing performance. However, fiber-reinforced resin retainers may produce greater friction during high-speed operation, affecting the stability of the bearing.