Mechanical Variable Speed Drives [P.I.V] Variable Helical Geared Motor Variable Worm Geared Motor Variable Double Worm Geared Motor Image Under Construction Variable Heli-Worm Geared Motor 0.5hp – 20hp Ratio - Min: 25:1 to Max: 12600:1 Worm-Helical Geared Motor Worm Geared Motor Double Worm Geared Motor Helical Geared Motor Worm / Heli-Worm / Helical Gear Boxes Parallel Helical Gear Box Extruder Parallel Helical Gear Box Tube Mill Gear Box Page Under Construction Hydrostatic Drives (Under Development)