**Detailed Discussion on "Deep Groove Ball Bearings"**
Home > Bearing Knowledge > Details of "Deep Groove Ball Bearings"
Source: China Bearing Network | Time: 2014-08-11
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Deep groove ball bearings are one of the most commonly used types of rolling bearings. They are primarily designed to handle radial loads, but they can also support combined radial and axial loads. When only radial forces are applied, the contact angle is zero. However, when the bearing has a larger diameter, it can function like an angular contact bearing, allowing it to withstand significant axial loads.
These bearings have a simple design, which makes them easy to manufacture with high precision. As a result, they are mass-produced efficiently, leading to lower production costs and wide application across various industries.
In addition to the basic type, there are several variants available, such as deep groove ball bearings with dust covers, rubber seals, snap grooves, ball gaps, and even double-row configurations. Each variant offers specific advantages depending on the application requirements.
1. **Deep Groove Ball Bearings with Dust Covers**
These bearings come in Z-type (one side) and 2Z-type (both sides). They are ideal for environments where lubrication is difficult, and the grease is pre-filled with a fixed amount of lithium-based grease. The grease ensures smooth operation within a temperature range of -40°C to +120°C. These bearings are commonly used in small and medium-sized motors, air conditioners, electric fans, and other applications where noise and vibration control are important.
2. **Deep Groove Ball Bearings with Seals**
Available in RS-type (contact seal), 2RS-type (double contact seal), RZ-type (non-contact seal), and 2RZ-type (double non-contact seal). The sealing mechanism prevents contamination while maintaining the same lubrication characteristics as dust cover versions. The main difference lies in the sealing lip's tightness against the inner ring.
3. **Deep Groove Ball Bearings with Snap Grooves and Retaining Rings**
These bearings feature a retaining groove and a snap ring that help prevent axial displacement. This simplifies the housing design and reduces the overall axial space required. They are often used in automotive and tractor applications where axial loads are relatively low.
4. **Deep Groove Ball Bearings with Ball Gaps**
Designed with notches on one side of the inner or outer race, these bearings allow more balls to be loaded, increasing their radial load capacity. However, their axial load capacity remains limited. They are typically used in conjunction with standard deep groove bearings when higher axial loads are present.
5. **Double Row Deep Groove Ball Bearings**
These bearings, such as 4200A and 4300A, have two rows of balls, providing up to 1.62 times the radial load capacity of single-row bearings. They can also handle axial loads and are often used in heavy-duty applications.
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This article was originally published on [China Bearing Network](http://www.chinabearing.net). Please cite the source when sharing.
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