I bought a home coffee roaster which is designed to sit on a gas cooktop. It has a small geared motor which turns the drum, which sits above the flame. The target rotational speed of the shaft turning the drum should be about 60RPM.
The motor has these markings:
output: 6W voltage: 24V speed: 2950RPM current: 0.5A
The (overseas) seller shipped a 220V AC 12V DC 850mA adapter but I have 120V AC. So I'm looking to replace the adapter with one that can take 120V input and supply the needed amps.
But does input voltage have an effect on RPM?
I'm wondering why the seller provided a 12V adapter when the motor says 24V. Is the seller maybe relying upon the 12V DC adapter to reduce the RPM? Should I be searching for a 12V DC (as supplied by the seller) or a 24V DC adapter?