bad news you have to fit a complete motor
service manual says
“
If it is an older motor with a black jockey wheel, then you would need to order the kit of motor and wheel C00519660, but if it is a newer motor with a white jockey wheel then you just need to order the Jockey wheel C00519663″
https://parts.hotpoint.co.uk/product/tumble_dryer/motors-fans/C00297214
if its under a 5 years parts warranty then you get the parts free just pay for labour
Dave