Deep groove ball is 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. The deep groove ball structure is also divided into sealed and open structures. Open refers to the bearing without a sealed structure. Sealed deep groove ball is divided into dust-proof seal and oil proof seal. The dust-proof seal 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 a 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 bear both radial and axial loads simultaneously. When it only bears 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 maximum speed is also high.

Applied in industries such as precision instruments, low-noise motors, automobiles, motorcycles, and general machinery, it is a widely used type of bearing in the mechanical industry.