What is Deep Groove Ball Bearing?

What is Deep Groove Ball Bearing?

Basic Structure

The basic deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls and a set of cages. There are two types of deep groove ball bearings: single row and double row. The deep groove ball structure is also divided into two types: sealed and open. The open type means that the bearing does not have a seal structure. The sealed deep groove ball is divided into dust-proof seal and oil-proof seal. The dust-proof seal cover is made of stamped steel plate and only serves to simply prevent dust from entering the bearing raceway. The oil-proof type is a contact oil seal, which can effectively prevent the grease in the bearing from overflowing.

The single row deep groove ball bearing type code is 6, and the double row deep groove ball bearing type code is 4. It has a simple structure and is easy to use. It is the most commonly produced and widely used type of bearing.

How it works

Deep groove ball bearings mainly bear radial loads, but can also bear radial loads and axial loads at the same time. 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 bear large axial loads. The friction coefficient of deep groove ball bearings is very small, and the limit speed is also very high.

Bearing characteristics

Deep groove ball bearings are the most commonly used rolling bearings. They have a simple structure and are easy to use. They are mainly used to bear radial loads, but when the radial clearance of the bearing is increased, they have certain performance of angular contact ball bearings and can bear combined radial and axial loads. When the speed is high and thrust ball bearings are not suitable, they can also be used to bear pure axial loads. Compared with other types of bearings with the same specifications and dimensions as deep groove ball bearings, this type of bearing has a small friction coefficient and a high limit speed. However, it is not impact-resistant and is not suitable for bearing heavy loads.

After the deep groove ball bearing is installed on the shaft, the axial displacement of the shaft or housing in both directions can be limited within the axial clearance range of the bearing, so it can be axially positioned in both directions. In addition, this type of bearing also has a certain self-aligning ability. When it is tilted 2° to 10° relative to the housing hole, it can still work normally, but it has a certain impact on the bearing life.