The updated version of SG8220E. This 20-mm laser-closed-loop galvanometer has a water cooling system. It is mainly used in 3D printers, laser welding, and laser cleaning applications.

• Adopts an all-aluminum integrated design with a high sealing grade and strong adaptability to the environment.
  
• A water cooling circulation system is adopted to effectively control the working temperature of the galvanometer and ensure the whole machine runs continuously for a long time.
  
• Differential photoelectric sensor for accurate detection of motor rotor position, good linearity, lower drift, high resolution, and repeat positioning.
  
• Accurate load design for 20mm mirrors, high accuracy of motor assembly, reasonable structure, very small static friction coefficient, and zero offset all ensured the best dynamic characteristics for the whole system.
  
• The whole system adopted the optimization design of electromagnetic compatibility with a high signal-to-noise ratio and strong anti-interference ability.