Advantages and Comparison of Planetary Roller Screws and Ball Screws for Linear Motion Control in Automated Equipment
Planetary roller screws are a popular choice for linear contact load transmission in automated equipment due to their various advantages. Their precision, repeatability, low noise, and reliability make them a desirable alternative to ball screws. Unlike ball screws, planetary roller screws avoid the issue of micro-vibration or noise generated during ball motion and the problem of different friction coefficients in forward and reverse rotation when carrying axial thrust. These screws also use precision matching of threads to allow rollers to roll in the thread groove, achieving linear motion control and high positioning accuracy.
Furthermore, planetary roller screws have a long life and high load capacity, making them ideal for use in automated equipment such as machine tools, robots, printing machines, and injection molding machines. In comparison to ball screws, they offer more benefits and are a better fit for linear motion control in such applications.