Deep Groove Ball Bearing

Deep Groove Ball Bearing

Deep groove ball bearings have a wide range of sizes and are the most commonly used rolling bearings. They have the characteristics of simple structure, standardized processing technology, reliability and durability, and high-cost performance. Deep groove ball bearings can withstand radial and light axial loads, are easy to install, and have low maintenance costs.

They feature low friction torque and are optimized for low vibration and noise for high-speed operation.

Applications: Electric Motors and Generators, Agriculture, Material Handling, Industrial Gearboxes, Food and Beverage, Industrial Pumps, Industrial Fans, Vehicles, etc.

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Advantages of Deep Groove Ball Bearing

(1) Ability to Carry Radial and Axial Loads

One of the most considerable drawbacks of traditional ball bearings is their inability to bear axial loads. Most deep groove ball bearings can handle around 50% of their radial load in the axial plane, though some smaller bearings can only handle around 25% of the radial load. This ability to bear axial and radial loads makes deep groove ball bearings extraordinarily versatile and has made them popular in a wide variety of industries.

(2) Low Friction

Deep groove ball bearings create less friction than standard bearings, which translates to cost savings in several ways. Firstly, it lowers the operating temperature of the bearing, which extends the lifespan of the bearing. It also makes it cheaper to operate the machinery with the bearing due to increased efficiency and lowered maintenance requirements. Low friction also results in lowered noise and vibration, making these bearings ideal for high rotational environments, where they will use less lubrication than their traditional counterparts.

(3) Easy to Install

Deep groove ball bearings are easy to install, which leads to simplified assembly and higher load capacity. Many manufacturers take advantage of the benefits of deep groove ball bearings and reduce the housing dimensions of machinery, which leads to smaller and lighter assemblies. Deep groove ball bearings also fit in a traditional bearing housing, which makes it simple to replace traditional ball bearings with their superior counterparts.

Angular Contact Ball Bearing Vs Deep Groove Ball Bearing

Differences in Structure:

Deep groove ball bearings and angular contact ball bearings with the same inner and outer diameter and width dimensions have the same inner ring size and structure, but the outer ring size and structure are different:
1. Deep groove ball bearings have double shoulders on both sides of the outer ring channel, while angular contact ball bearings generally have single shoulders;
2. The curvature of the outer ring of deep groove ball bearings is different from that of angular contact balls, the latter is often greater than the former;
3. The position of the outer ring groove of deep groove ball bearings is different from that of angular contact ball bearings. The specific value of the non-central position is taken into account in the design of angular contact ball bearings and is related to the degree of contact angle;

In Terms of Use:

1. The two uses are different. Deep groove ball bearings are suitable for bearing radial force, smaller axial force, combined axial load and moment load, while angular contact ball bearings can bear single radial load and larger shaft Directional load (different with different contact angles), double paired (different with different pairing methods) can bear bidirectional axial load and moment load.
2. The limiting speed is different. The limiting speed of angular contact ball bearings of the same size is higher than that of deep groove ball bearings.

Deep Groove Ball Bearing Manufacturing Process

The manufacturing process of a deep groove ball bearing consists of:
1. Preparation of Bearing Materials

Preparation of materials is the first step to make ball bearings. The steels are first heated to about 1710 degree Celsius to eliminate as many impurities as possible. Then the components are used to form high carbon chromium bearing steel, which has an extremely high tensile strength. Then it is formed to necessary shapes and sizes for the productions of different types of bearings. They are formed into wires, plates, tubes, bars and so on.

2. Forging

The steel bar is first heated then cut. It is then pressed by machine and molded into inner and outer ring shapes. The designated shapes are formed by hot forging.

3. Turning

For the turning of the inner ring, first, the surface on one side is cut, then the other. After that, the bore is cut. Then, it is chamfered. Finally, the raceway is cut, and the turning of the inner ring is completed. The turning of the outer ring is similar to that of the inner ring. The marks are stamped on the side surfaces of the ring indicating the information such as the brand and part number. Nowadays, more manufacturers are using laser marking machines.

Deep Groove Ball Bearing Manufacturing Process
4. Heat Treatment

Because the inner and outer rings work under tremendous pressure and they repeatedly go through rolling motions, they must be extremely rigid and wear-resistant. So, they have to go through quenching, which they are heated between 800 and 860 degrees Celsius, then instantly cooled. To boost wear resistance, they are held at 1450 to 200 degrees for a long period, they cooled slowly. This process is called tempering. Tempering must be done soon after quenching to reduce the risk of cracking.

5. Grinding

For the grinding of the outer ring, the side surface of the ring is first ground. Then the outer surface is ground so that it is precisely perpendicular to the side surface. Then using the outer surface as a reference, the raceway groove is honed. The same process applies to the inner ring.

8. Assembly

There are slight gaps between the inner and outer rings and the steel balls, which is known as the internal clearance. Different clearances apply to the bearings according to various applications. When a bearing is being assembled, the internal clearance is adjusted by selecting steel balls of different sizes. Nowadays, bearings are assembled by industrial robots. This machine is measuring the raceway dimensions between the inner and outer rings. That measurement determines which ball size is chosen. The machine then places the correct number of steel balls between the two rings. Retainers are placed above and below, and then riveted. The assembled units are cleaned. Then the grease is squeezed evenly into the raceway, then the bearings are sealed if necessary. Many manufacturers test the bearings before they ship out. For example, the durability, performance and noise level.

Deep Groove Ball Bearing Application

Deep groove ball bearings are essential components of heavy machinery. They’re particularly useful in:

  • Gearboxes
  • Agricultural machinery
  • Motors
  • Mining
  • Pumps
  • Machine tools
  • Construction Equipment
  • Medical devices
  • Engineering machinery
  • Food processing machinery
  • Wind turbines
  • Aerospace