What is the difference between single row deep groove ball bearings and double row deep groove ball bearings?

The difference in design and application between single row deep groove ball bearings and double row deep groove ball bearings is not only reflected in the structure, but also shows significant differences in their respective functional characteristics and applicable fields.

From a structural point of view, single row deep groove ball bearings have become the first choice for many small mechanical devices due to their identical inner and outer ring diameters and simple structure. This design makes single-row deep groove ball bearings more convenient to manufacture and install, and the cost is relatively low. However, double row deep groove ball bearings stand out due to their different diameters for the inner and outer rings and the larger diameter of the balls. This unique design allows the double-row deep groove ball bearing to have a larger contact area when bearing load, thereby significantly improving its load-bearing capacity.

In terms of functional characteristics, single row deep groove ball bearings are mainly suitable for low-speed rotation and small load environments. Due to the relatively small contact area, single row deep groove ball bearings have limited load-bearing capacity. But this also makes it more suitable for some occasions that require higher accuracy and stability, such as automobile rear wheels, transmissions, etc. In contrast, double row deep groove ball bearings are known for their strong load-bearing capacity, stable rotation characteristics and long service life. It can withstand greater radial and axial loads and maintain stable performance even in high-speed rotation and heavy-load environments. Therefore, double row deep groove ball bearings are widely used in steel production, mining and construction projects where heavy loads and high-speed rotation are required.