On Mar 21, 11:53*am, Andrew May wrote:
I have a 2.4kW electric motor in a garden shredder. It has a broken radial
cooling fan that is a push fit onto the rear arbor. I don't think that it
is available separately as a spare - only the whole motor.

Miles Tools are good on spares, although you haven't said what make.
http://www.mtmc.co.uk/Spare-Parts__c-p-0-0-240.aspx

You need a fan and maybe a lathe. Any old rubbish will fit in there
and probably work OK, but it will need to be securely fastened and
well balanced.

In extremis, throw the fan away and mount a new fan externally (PC
cooling fan etc.). You don't need a specific fan, just to achieve
airflow.