This helical ring gear housings was used in robotics gearboxes , Helical ring gears are commonly used in applications involving planetary gear drives and gear couplings. There are three main types of planetary gear mechanisms: planetary, sun and planet. Depending on the type and mode of shafts used as input and output, there are many changes in gear ratios and directions of rotation.
Material :42CrMo plus QT ,
Heat Treatment :Nitriding
Accuracy: DIN6