Hi to all, and thanks to anyone who is willing to help out a complete ignoramus here. I am not building a robot, but rather a coffee roaster. After spending hours hunting for an appropriate motor and controller combination to run it, I figured that robots would use identical technology.
I want to drive a drum style roaster, with a radius of rotation of 5 inches (12.7 cm), and a mass of 10 lb (4.5 kg). The coffee load will be a maximum of 4.4 lb (2 kg), likely at the limit of rotation as well, so a total load of 14.4 lb (6.5 kg). My extremely rudimentary math says that would mean a minimum torque of 8 Nm. Does that seem correct?
Second question, what type of controller would be most appropriate for this purpose, variable speed, max rpm’s of 120, reversible motor. I’m guessing that the most likely motor for the application would be a 12 or 24 VDC motor.
I deeply appreciate any assistance.