Deep groove ball bearings are a common type of rolling bearing. The basic type of deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls, and a set of retaining structures. There are two types of bearings: single row and double row. Deep groove ball structures are also divided into sealed and open structures. Open type refers to bearings without a sealed structure, while sealed deep groove balls are divided into dust-proof and oil proof seals. The dust-proof sealing cover material is stamped steel plate, which only plays a simple role in preventing dust from entering the bearing raceway. The oil proof type is contact oil seal, which can effectively prevent lubricating grease from overflowing inside the bearing.

Deep groove ball bearings mainly bear radial loads and can also withstand a certain amount of axial loads. When they only bear radial loads, the contact angle is zero. When deep groove ball bearings have a large radial clearance, they have the performance of angular contact bearings and can withstand large axial loads. The friction coefficient of deep groove ball bearings is very small and the ultimate speed is also high,

Deep groove ball bearings are representative rolling bearings with a wide range of applications, suitable for high-speed or even extremely high speed operation, and are very durable without frequent maintenance. They are widely used in industries such as precision instruments, low-noise motors, automobiles, motorcycles, and general machinery, and are a type of bearing widely used in the mechanical industry.