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Common terms and definitions for roller bearings
**Common Terms and Definitions of Roller Bearings**
Home > Bearing Knowledge > Common Terms and Definitions of Roller Bearings
Source: China Bearing Network | Date: April 23, 2013
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Roller bearings are essential components in mechanical systems, designed to reduce friction and support loads. They come in various types, each with unique characteristics and applications. Below is a detailed explanation of some common terms and definitions related to roller bearings.
1. **Roller Bearing**
A roller bearing is a type of rolling-element bearing that uses cylindrical rollers to maintain the separation between moving parts. These bearings are ideal for handling heavy radial loads.
2. **Radial Roller Bearing**
This is a bearing that primarily supports radial loads. The rolling elements, such as cylinders or cones, are arranged to allow rotation while maintaining contact with the inner and outer races.
3. **Cylindrical Roller Bearing**
A radial roller bearing that uses cylindrical rollers. These bearings are known for their high load capacity and are often used in applications requiring high-speed operation.
4. **Tapered Roller Bearing**
Designed to handle both radial and axial loads, this type of bearing has conical rollers that roll on conical raceways. It is commonly used in automotive wheel hubs.
5. **Needle Roller Bearing**
These bearings use long, thin rollers (needle-shaped) to support radial loads. They are compact and suitable for applications where space is limited.
6. **Drawn Cup Needle Roller Bearing**
A needle roller bearing with a thin-stamped outer ring. It is often used without an inner ring and may be open at one or both ends, making it suitable for specific mechanical designs.
7. **Spherical Roller Bearing (Convex)**
Also known as a convex spherical roller bearing, this type features a convex-shaped roller that allows for self-alignment. It can accommodate misalignment and is used in heavy-duty applications.
8. **Concave Roller Bearing**
This bearing contains concave-shaped rollers, which are typically used in applications where the bearing must accommodate angular misalignment.
9. **Spherical Roller Bearing**
A self-aligning bearing that uses either convex or concave rollers. It has a spherical raceway on the outer ring or inner ring, allowing for angular adjustment and reducing stress from misalignment.
10. **Crossed Roller Bearing**
This bearing has a single row of rollers that are crossed at 90-degree angles. This design allows it to handle axial loads in both directions, making it ideal for precision applications.
11. **Thrust Roller Bearing**
Designed to support axial loads, this type of bearing uses rollers that are aligned parallel to the axis of rotation. It is often used in applications involving thrust forces.
12. **Cylindrical Thrust Roller Bearing**
A thrust roller bearing that uses cylindrical rollers. It is effective in supporting heavy axial loads and is commonly used in industrial machinery.
13. **Tapered Thrust Roller Bearing**
Similar to a tapered roller bearing but designed for axial loads, this bearing uses conical rollers and is often used in gearboxes and other heavy-load applications.
14. **Needle Thrust Roller Bearing**
A compact thrust bearing that uses needle-shaped rollers. It is ideal for applications where space is limited and axial load support is required.
15. **Spherical Thrust Roller Bearing**
This bearing is self-aligning and uses either convex or concave rollers. It is suitable for applications where misalignment is likely and requires reliable performance under axial loads.
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**Related Topics**
- Features and Characteristics of Needle Roller Bearings
- How to Protect Water Pump Bearings
- Causes of Hub Bearing Damage and Self-Aligning Bearing Devices
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