

Differential planetary roller screw is a special structural type of planetary roller screw, with its core being the realization of motion synthesis through a double-thread structure, mainly used in precision fine-tuning mechanisms. The differential planetary roller screw adopts a double-thread design, with the rollers forming a planetary motion layout around the main screw. Compared with standard and reverse structures, the rotation direction of its rollers and screws is opposite, achieving more complex motion synthesis through differential transmission.