Ref. #'s: MA-83, MA57-7, 84-0083-00-4, W57-7, 10-1234-00
Designed to fit American Monorail Trolley 840057004 (flangeless wheel 5" Dia.) on 4" track.
Regreasable or Nonregreasable wheel assembly. Replacement Parts wheels are made from high strength
steel or, per customer's specifications and the treads and flanges are induction hardened to Rockwell 45
to 50. The wheel bearing bores are remachined after the wheels have been heat treated to assure proper
concentricity. High quality precision ball or roller bearings are used on a machined steel axle to assure
long life and easy rolling.