What is F628zz ball bearings?
From: XingMao DATE: 2026/3/25 Hits: 20
What is F628zz ball bearings?
The F628ZZ bearing is a small deep-groove ball bearing widely utilized in both industrial and everyday mechanical equipment; it is favored by the market for its simple structure, stable performance, and broad range of applications. For professionals working in the fields of mechanical engineering, international trade, or equipment maintenance, understanding ...
The F628ZZ bearing is a small deep-groove ball bearing widely utilized in both industrial and everyday mechanical equipment; it is favored by the market for its simple structure, stable performance, and broad range of applications. For professionals working in the fields of mechanical engineering, international trade, or equipment maintenance, understanding the fundamental characteristics, structural parameters, and application scenarios of the F628ZZ bearing holds significant practical value.
First, regarding the model designation itself, "F628ZZ" can be broken down into several components for better understanding. The "F" typically indicates that the bearing features a flange—specifically, a protruding rim structure located on one side of the outer ring. This flange facilitates installation and positioning, making the bearing particularly suitable for equipment requiring precise axial alignment. The "628" denotes the bearing's basic dimension series, specifying its standard inner diameter, outer diameter, and width dimensions. Finally, "ZZ" signifies that the bearing is equipped with double-sided metal shields; these shields effectively prevent dust ingress while simultaneously retaining the internal lubricant.
In terms of specific parameters, the standard dimensions of the F628ZZ bearing are typically: an inner diameter of 8mm, an outer diameter of 24mm, and a width of 8mm (though slight tolerance variations may exist between different manufacturers). The bearing is typically manufactured from high-carbon chromium bearing steel (GCr15), a material renowned for its excellent wear resistance and fatigue strength, enabling it to maintain stability during high-speed rotation or prolonged operation. The bearing cage is commonly constructed from either steel or nylon, with the choice depending on the specific operating environment.
Structurally, the F628ZZ is a quintessential deep-groove ball bearing. This design is characterized by raceways featuring deep grooves, which allow the bearing to support not only radial loads but also a certain degree of axial load. Consequently, the F628ZZ is suitable not only for applications involving purely radial loads but also for stable operation in environments where moderate axial forces are present. Furthermore, deep-groove ball bearings exhibit a low coefficient of friction and generate minimal noise during operation, making them an ideal choice for equipment requiring quiet performance.
The "ZZ" metal shield design of the F628ZZ constitutes one of its primary advantages. Compared to rubber seals (such as the 2RS type), metal shields generate less friction, making them particularly well-suited for high-speed operating environments. Meanwhile, although its dust-proofing capability is slightly inferior to that of rubber seals, it remains entirely adequate for standard industrial environments—such as those involving electric motors, small-scale machinery, and automation equipment.
In terms of application, the F628ZZ bearing is widely utilized across the following sectors:
1. Small Motors and Fan Equipment: Due to its high rotational speed and low noise levels, it is well-suited for household appliances such as electric fans and exhaust fans.
2. Automation Equipment: Examples include conveyor systems and guide rail pulleys; the flanged structure facilitates easy mounting and securing.
3. Office Equipment: Used in transmission components within devices such as printers and photocopiers.
4. DIY and Modeling Industries: Given its compact dimensions, it is frequently employed in robotics, 3D printers, and pulley assemblies.
5. Light Industrial Machinery: Such as textile manufacturing equipment and small-scale transmission systems.
When selecting a bearing, it is essential to consider multiple factors based on the specific operating environment. These include rotational speed requirements, load capacity, operating temperature, and whether water or dust resistance is necessary. If the equipment operates in a relatively harsh environment (e.g., one involving high humidity or excessive dust), one might consider opting for the rubber-sealed version (F628-2RS). Conversely, if the priority lies in achieving higher rotational speeds and lower rotational resistance, the F628ZZ serves as the superior choice.
Regarding maintenance, the F628ZZ is a pre-lubricated bearing; it typically comes pre-filled with grease from the factory, meaning users generally do not need to apply additional lubricant under normal operating conditions. However, if the bearing is subjected to prolonged operation in high-temperature or heavy-load environments, it is advisable to periodically inspect its condition. Should any abnormal noises, excessive heat generation, or rotational irregularities occur, the bearing should be replaced immediately.
In summary, thanks to its flanged design, double-sided dust shields, and robust deep-groove ball structure, the F628ZZ bearing plays an indispensable role within the realm of small-scale machinery. Whether utilized in industrial manufacturing processes or everyday consumer devices, it serves as a critical foundational component.
