What is a Split Phase Motor

Thanks, Fred!

I don't know much about motors but would appreciate your advice...
I would like to get a 1/4 hp motor for continuous use. I would be running this motor all day, everyday for long time. I'm making a rock tumbler & using it to tumble rocks. This will be running for weeks at a time 24 hour a day. I don't know if I need a single phase motor. Or if there are motors with built in fans within the motor to keep it cool? I heard Dayton or Marathon motors are good. Any advice
Or input on this would be greatly appreciated! Thanks 😎