The deep groove ball bearing is the most common rolling bearing. It is basically composed of an outer ring, an inter ring, a group of steel balls and a group of retainer. The deep groove ball bearing can be classified into two types: single-row and double-row; its structure can also be classified into two types: sealed-type and open-type. The open-type refers to the bearing without sealed structure. The sealed-type deep groove ball can also be classified into two types: dust-proof sealed-type and oil-proof sealed-type. The material of dust-proof sealed cap is made by steel plate stamping, which can simply prevent dust from entering the rollaway nest. The oil-proof type is a contact-type oil seal, which can effectively prevent the lubricating grease in the bearing from overflowing.

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​Working Principle

The deep groove ball bearing mainly bears radial load, but it can simultaneously bear radial load and axial load. The contact angle is zero when it only bears the radial load. When the deep groove ball bearing has a relatively large radial internal clearance, it has the property of an angular contact bearing and thus can bear relatively large axial load. Deep groove ball bearing has a quite small friction coefficient, so it has a quite high peak rotation speed.

Bearing Structure

Deep groove ball bearing has a simple structure and high manufacturing accuracy compared with other types of bearing; therefore, it can be produced in series and bulks with low cost and extremely wide applications. In addition to the basic structure type, the deep groove ball bearing has many other structure types including the deep groove ball bearing with dust-proof cap, the deep groove ball bearing with rubber sealing ring, the deep groove ball bearing with stop groove, the deep groove ball bearing with filling slot that has large load capacity and double-row deep groove ball bearing.

Bearing Types

1. Single-row deep groove ball bearing

2. Single-row deep groove ball bearing with dust-proof cap

3. Single-row deep groove ball bearing with dust-proof cap and sealing ring

4. Single-row deep groove ball bearing with stop groove and stop ring on the outer ring

5. The deep groove ball bearing with filling slot

6. Double-row deep groove ball bearing

The deep groove ball bearings can be classified into the following types according to their size:

(1) Mini bearing-the bearings having a nominal outside diameter below 26mm;

(2) Small bearing-the bearings having a nominal outside diameter between 28mm and 55mm

(3) Small-medium bearing-the bearings having a nominal outside diameter between 60mm and 115mm

(4) Medium-large bearing-the bearings having a nominal outside diameter between 120mm and 190mm

(5) Large bearing-the bearings having a nominal outside diameter between 200mm and 430mm

(6) Super-large bearing-the bearings having a nominal outside diameter above 440mm

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Miniature deep groove ball bearing