Gearboxes for AC servo systems are precision mechanical devices that couple with the servo motor to optimize torque, speed and positioning performance for demanding motion control applications. By providing a compact means of increasing output torque and reducing speed, gearboxes allow a smaller servo motor to handle higher inertia loads and improve acceleration without sacrificing accuracy. High quality servo gearboxes use low backlash designs—such as planetary, harmonic or cycloidal types—to preserve the system’s positional resolution and responsiveness, minimizing lost motion and improving repeatability. Selecting the right gearbox involves matching reduction ratio, rated torque, peak torque capacity, allowable input speed, mounting configuration and service life to the application’s load profile and duty cycle, while also considering backlash, efficiency and maintenance needs. Proper installation, alignment and lubrication are essential to maximize gearbox performance and longevity. Integrated gearboxes with feedback options simplify encoder coupling and multi axis synchronization, enabling compact, robust solutions for robotics, packaging, conveyors, CNC machines and other automated equipment.