Mike Knudsen's post in the 01.04.23 Digest mentions a company in
Wisconsin that makes motors for pinball machines.  They make them for
all other applications as well.

In the years I had a large number of coin operated games, including
pinballs, I sent motors to the original manufacturer, Multi Products
in Racine, Wisconsin.  They would rebuild a motor for much less than
I could buy replacements new from the manufacturer.  Some units were
available only from the game manufacturer, but Multi Products has been
in business for a long time and they make most of the small motors for
the game industry.  Here is their information:

  Multi Products
  5301 21st Street
  Racine, WI  53406
  tel: 262 554-3700
  fax: 262-554-3711

We just sent in the old motors and they rebuilt them.  Turnaround was
fast and the quality -- well, they made the motors in the first place!
They are very much still in business and are great people to deal with.

Ed Gaida