The differences between ball series and roller series linear guides mainly lie in the types of rolling elements, load capacity, rigidity, motion accuracy, speed and noise, application scenarios, and price, etc. The following is a specific comparison:

Rolling element type: The rolling elements of the ball series are steel balls, spherical in shape, and the contact mode with the guide rail and slider is point contact. The rolling elements of the roller series are rollers, which are cylindrical in shape and have line contact with the guide rails and sliders.

Load capacity: The load capacity of the ball series is relatively small, making it suitable for medium-load application scenarios. The roller series has a significantly higher load capacity and is suitable for applications with heavy loads and high rigidity requirements.

Rigidity: The ball series has relatively low rigidity and is suitable for application scenarios with high precision requirements but small loads. The roller series has extremely high rigidity and is suitable for heavy-duty application scenarios that require high rigidity and high precision.

Motion accuracy: The ball series typically features high motion accuracy and is suitable for applications with high precision requirements. The roller series can maintain high motion accuracy even under high loads and is suitable for high-precision and high-rigidity application scenarios.

Speed and noise: The ball series has a relatively high speed and generates less noise during operation, making it suitable for environments that are sensitive to noise. The roller series has a relatively low speed and generates relatively high noise during movement, but the noise can be reduced through design optimization.

Application scenarios: The ball series is suitable for medium-load, high-precision and high-speed applications, such as CNC machine tools and automated equipment, etc. The roller series is suitable for heavy-load, high-rigidity and high-precision applications, such as large-scale mechanical processing centers, etc.

Price: The ball bearing series has relatively low prices and high cost performance. The roller series is relatively expensive and is suitable for application scenarios with extremely high performance requirements.