Thrust vs. Radial Load: Choosing the Right Bearing for Your Application

When it comes to selecting the right bearing for your machinery, one of the most common questions is whether to choose a bearing designed for thrust load or radial load. Understanding the difference between these two types of forces is essential for improving machine performance and extending bearing life. In this article, we’ll explain the distinction in clear terms, with simple examples and illustrations.

What Is a Radial Load?

A radial load is a force that acts perpendicular to the shaft of a bearing. In simpler terms, it pushes down on the bearing from the side. Imagine a wheel supporting the weight of a vehicle—the pressure of the car’s weight on the axle is a radial load.

Best Bearing Choice: Bearings such as deep groove ball bearings are commonly used to handle radial loads thanks to their ability to maintain smooth rotation under side pressure.

What Is a Thrust Load?

A thrust load is a force that acts parallel to the shaft of a bearing. It pushes or pulls along the axis of rotation. For example, when a screw conveyor pushes material forward, the force exerted on the bearings is primarily axial, or a thrust load.

Best Bearing Choice: Bearings such as thrust ball bearings are designed to absorb axial forces and provide stable support in vertical or axial applications.

Combined Loads: When You Need Both

In many applications, bearings must withstand a combination of radial and thrust loads. For example, electric motors and pumps often experience both side pressure and axial force. Bearings like angular contact ball bearings or spherical roller bearings are designed for such cases where both load types are present.

Why Choose DEMY Bearings?

When your application requires precise and durable solutions, DEMY provides a full range of bearing types, including deep groove ball bearings, thrust ball bearings, and advanced solutions for combined loads. All DEMY bearings are manufactured with strict quality standards to ensure long-lasting performance in demanding environments. Whether your equipment needs reliable support for high-speed, heavy-load, or specialized applications, DEMY is ready to deliver the right bearing for your needs.