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Track bearings bearing preload

Track Bearings Bearing Preload

Track bearings play a crucial role in various industries, ensuring smooth and precise movement of machinery and equipment. One important aspect of track bearings is bearing preload, which refers to the elimination of internal clearance between the rolling elements and the raceway. In this article, we will delve into the concept of bearing preload and its significance in different applications.

Understanding Bearing Preload

Bearing preload is the force applied to a bearing to eliminate the internal clearance and ensure proper contact between the rolling elements and the raceway. This preload is essential for minimizing the play between the components, enhancing rigidity, and improving the overall performance of the track bearing.

The Importance of Bearing Preload

Bearing preload plays a vital role in various applications, such as:

Application 1: Robotics

In robotics, track bearings with proper preload are crucial for precise and accurate movement of robotic arms and joints. The preload helps in minimizing backlash, ensuring efficient motion control, and enhancing the robot’s repeatability.

Application 2: CNC Machines

CNC machines require track bearings with preload to achieve high precision and eliminate any unwanted movement or vibration during machining operations. The preload ensures stability, reduces deflection, and enhances the machine’s accuracy.

Application 3: Industrial Conveyors

Industrial conveyors often rely on track bearings with preload to maintain smooth and reliable material transportation. The preload prevents excessive play or misalignment, ensuring consistent and efficient movement of goods along the conveyor system.

Methods of Achieving Bearing Preload

There are several methods to achieve bearing preload, including:

Method 1: Axial Preload

Axial preload involves applying an external force to the bearing in the axial direction. This force compresses the components, eliminating any internal clearance. Axial preload is commonly used in applications where precise axial movement is essential.

Method 2: Radial Preload

Radial preload, also known as radial internal clearance reduction, involves applying a force perpendicular to the bearing’s axis. This force reduces the internal clearance, ensuring proper contact between the rolling elements and the raceway. Radial preload is often utilized in applications where radial stiffness is critical.


Bearing preload is a crucial factor in the performance and reliability of track bearings. Whether in robotics, CNC machines, or industrial conveyors, proper preload ensures precise movement, stability, and improved overall efficiency. By understanding and implementing the appropriate preload methods, industries can optimize their machinery and achieve superior results.

Track Bearings in Application

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Author: Czh



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