Core Viewpoint - Tianfeng Securities reports that planetary roller screws offer higher precision, longer lifespan, and greater load capacity, with potential applications in automotive steer-by-wire chassis systems [1] Application Areas - In the robotics sector, ball screws and planetary roller screws are predominant; in the automotive sector, ball screws are widely used in chassis, while planetary roller screws are emerging as a new technological direction [2] - In braking systems, the trend is moving from traditional hydraulic brakes to electro-hydraulic mixed brakes (EHB) and then to electromechanical brakes (EMB), with planetary roller screws gradually replacing existing technologies due to their low friction, high load capacity, and long lifespan [2] - In steering systems, rear-wheel steering technology (RWS) can control the rear wheel's steering angle, significantly enhancing vehicle handling; planetary roller screws may be used in this technology, offering advantages over current ball screws or belt drives [2] - In active suspension systems, planetary roller screws possess higher load capacity, longer lifespan, and more compact structure, indicating potential for increased application in electric suspension systems as performance requirements evolve [2] Competitive Landscape - The market is currently dominated by international leaders, with foreign manufacturers holding over 60% market share in 2022; Swiss company GSA/Rollvis leads with a 52% share [3]