What type of roller bearings are used for CT machine main bearings?


In a CT (Computed Tomography) machine, the main bearings are the bearings that support the rotation of the gantry, which holds the X-ray tube and the detector. The gantry rotates around the patient, allowing the X-ray beam to pass through the body from different angles, while the detector captures the X-rays that pass through the body and produces images that can be reconstructed into 3D images of the internal organs.

The main bearings in a CT machine are typically designed to withstand high radial and axial loads, as well as accommodate high speeds and precision requirements. They are critical components of the machine, as they enable the gantry to rotate smoothly and precisely during scanning. The main bearings are usually located at both ends of the gantry and are typically large and robust to support the weight of the gantry and the X-ray tube.

Therefore, they often use cylindrical roller bearings or angular contact ball bearings, which are suitable for high load applications and offer high stiffness and rigidity.

But we just talk about crossed cylindrical roller bearings here.

Cylindrical roller bearings are particularly well-suited for applications that require high radial load capacity, such as the main bearings in CT machines. These bearings have high radial load-carrying capacity and are capable of accommodating axial loads in one direction. They are also available in different designs, such as with or without ribs, which can help optimize their performance in different applications. 

The specific type of roller bearing used for main bearings in CT machines will depend on the specific requirements of the application, such as load capacity, speed, and precision.


Luoyang E-find Precision Bearing specializes in the production of high-precision, high-rigidity,

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bearings for 18 years.We have ISO, SGS certification, and professionally replaces IKO THK INA SKF and other foreign imported brands.

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Our main products are RB, RA, CRBH, SX, RU, XU, XSU series crossed cylindrical roller bearings, YRT, YRTS, ZKLDF series rotary table bearings. Many models are bulk on the stock.

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