These precision planetary gearboxes are for CNC machines. The customer’s motor is stepper motor Nema 34, with input sizes of 12.7-73-98-M5. The smaller planetary gearbox is model MAB090-7-S2-P2, the bigger planetary gearbox is two-staged with a ratio of 15:1 – MAB090-15-S2-P2. If you also have any new inquiries about the planetary gearbox, please don’t hesitate to inquiry us.