Servo sewing machine motor is built with pure copper coils for high conductivity, high stability, low noise operation, and excellent speed regulating performance, which can save energy for a long time. With user's manual on speed controller, you can freely adjust its speed within 500-3500RPM. LED screen indicates accurately the speed. A tie bar connects with pedal to make infinitely variable speed. The sewing machine motor is made of highquality plastic and metal material The strengthened motor base increases the stability In addition holes for easy setup the same installation method as the general motor Adjust the needles highest or lowest position with the needle positioner to avoid the operators repeatedly pulling back the needle and avoid the needle slide due to cloths running out For industrial sewing machine with clutch motor, such as high head machine, zigzag seam, layering machine, high machine, flat machine, package sewing machine, flat sewing machine, etc.