Why is deep groove ball bearing the most popular? Deep groove ball bearing is named for their inner ring and the outer ring has two grooves to support the operation of steel balls. It mainly bears radial loads, but can also support axial loads. When deep groove bearing only supports the radial load, the contact angle is zero, the friction coefficient is small, and the limit speed is also high. Among all types of bearing, grooved ball bearings are the most widely used, cost-effective, and easy to install and disassemble. So it is the most popular bearing. The most commonly used deep groove balls are single-row ball bearings. Classification of single row deep groove ball bearing: VV bearing has many types, such: inch bearing, open bearing, sealed bearing, miniature ball bearings, ceramic bearings. Skateboard bearing is a kind of mini deep groove bearing, and its applications can be seen everywhere in life, such as finger tops, shopping carts, fans, etc. How to choose deep groove ball bearings? There are many reasons why deep groove ball bearings fail, such as dust, debris, corrosion, etc. If the working environment is messy, it is recommended to choose rubber sealed bearings. Most importantly, The staff should regularly check and replace the bearings.