UDL Mechanical Speed Variator

UDL Mechanical Speed Variator

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Tramec UDL Disc type mechanical variator operates on an elliptical disc that provides infinitely variable reduction ratio.  Output speeds range from 76 to 12% of motor input speed, while multiplying torque proportionally to speed reduction at an 84% average efficiency.  Machinery designers appreciate the simple, low cost, low maintenance, and reliable nature of these compact mechanical speed variators. 


  • 3 sizes - IEC 63B5, 71B5, 80B5 input/output.
  • 6 ~ 1 variable speed range.
  • Epicyclical transmission design, smooth, quiet, and efficient.
  • Lubrication - ATF (Automatic transmission fluid).
  • "Fish Eye" oil level sight glass.
  • Replaces Bonfiglioli V0.25F63 D11 P63 = UDL002. V.05F71 d14 P71 = UDL005, V1F80 D19 P80 = UDL010.
  • Replaces Motovario TXF002 =  UDL002, TXF005 = UDL005, TXF010 = UDL010.
  • Replaces SITI MK2 = UDL002, MK5 = UDL005, MK10 = UDL010.
  • Ships same day from Missouri distribution center. 

Download UDL Catalog (PDF).