... and cast iron 3.Convenient to be mounted with gear,motor Planetary mechanical speed variators,UD seriesFeatures,1) High precision ... regulate speed5) Continuously workable, bidirectional working direction,stable transmission with lower noise6) Fully sealed and suitable to any environment7) ... body9) Mounted way,vertical and horizontal(with foot),easy to be combined with gears or gearboxes 10)Torque value ...