Is there the name of a manufacturer printed on the motor somewhere, Abstract don't make their own motors, they just buy other peoples

. This information could be on the voltage / spec plate or a label on the motor itself. Sometimes it is cheaper to buy a motor direct from the manufacturer or one of their service agents, than to buy from the actual lighting manufacturer!. Also we may be able to find a cheaper equivalant motor from elsewhere.
Also, are you 100% certain it is the motor which has failed?.