Most powerful, lowest speed servo motor for heavy duty leather sewing machine 

Kinedyne HM-750SH is the world's most powerful class of "low-speed, high-torque" energy saving servo motor that maintains full power and torque even at low speeds. Its robust power and precise motions combine to deliver unparalleled performance. To our knowledge, the most powerful sewing machine motor on the planet!
Speed is adjustable by a simple setting (from 50 RPM to 3000 RPM) that allowing you to slow down your machine and sew stitch by stitch. This makes sewing detailed work much easier. Also ideal for beginners. Using either an 750SH high torque motor on heavy thick sewing applications completely eliminates the need for a now obsolete, "Speed Reducer".
automatic-sewing.com/750SH-sl...
Top purchase:
USA & China: cowboysew.com/products.htm
UK: www.franklinco.co.uk
Australia: sunvalleytrading.com.au
Brazil: buescomex.com.br/maquinas-hig...