There are two different gear series of this product and 3 different voltage options.
If replacing just the motor and not the gearhead, look for a GU or GE on the motor and the corresponding gearhead you are replacing and pick the corresponding gear type series.
If replacing both gearhead and motor together, opt for the GE versions of this product which are the current specification versions from the manufacturer. Product names are the same but with GE instead of GU.
Compatible with "9:1 Gearhead - 17mm shaft"
You also need to match the voltage with the motor you are replacing.
This is for the eliminator trash belt and blower trash belt and is sometimes used on conveyors on other machines as well.