The 628Z bearing is a popular miniature ball bearing characterized by its compact size and versatile application in various mechanical systems. Understanding the dimensions and specifications of the 628Z bearing is crucial for engineers and manufacturers who require precision components for their designs.

Dimensions and Specifications

The 628Z bearing typically has an inner diameter of 8 mm, an outer diameter of 24 mm, and a width of 8 mm. These dimensions make it an ideal choice for applications where space is limited yet performance cannot be compromised. The Z in its name indicates that it comes with a metal shield on one side, which helps to protect the internal components from dust and contaminants. This feature is especially important in environments where the bearings may be exposed to abrasive particles.

Material and Design

The 628Z bearing is generally made from high-quality carbon steel or stainless steel, offering a good balance between durability and weight. The use of chrome steel provides enhanced hardness and wear resistance, making the bearing suitable for high-speed applications. Additionally, the balls within the bearing are often made from high-carbon chromium steel, contributing to minimized friction and increased efficiency.

Due to its small size and robust design, the 628Z bearing is widely used in various applications, including but not limited to electric motors, robotics, bicycle hubs, and household appliances. Its reliability and performance under load make it a favored choice in many mechanical assemblies where smooth motion and reduced friction are necessary.

Installation and Maintenance

Proper installation is critical to ensure the longevity and performance of the 628Z bearing. It is essential to align the bearing accurately and apply the correct amount of torque to avoid unnecessary stress or damage. Regular maintenance, which may include periodic lubrication and inspection for wear, is also important to extend the life of the bearing. The metal shield helps in reducing the frequency of maintenance by preventing dirt and debris from entering the bearing.

Conclusion

In summary, the 628Z bearing is a highly functional component that offers a balance of compact size, durability, and versatility. By understanding its dimensions and appropriate applications, designers and engineers can optimize their projects for better performance. Whether it’s in a high-speed motor or a precision instrument, the 628Z bearing remains a critical element that supports smooth and efficient operation in countless devices.