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Product Groups
Worm Gear Speed Reducers
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
HDR Series
  • 8 Ratios Available from 5:1 to 60:1
  • 7 Gear Box Sizes from 1.33 to 3.25"
  • Universally Interchangeable Design for OEM Replacement
  • Double Bearings Used on Both Shaft Ends
  • Anti-Rust Primer Applied Inside and Outside Gearbox
  • Shaft Sleeve Protects All Shafts
  • S45C Carbon Steel Shafts
  • Flange Mount Models for 56C and 145TC Motors
 Manuals (contact with email : [email protected])


The HDR Series worm gear reducers areused in low to moderate horsepowerapplications to reduce speeds and increasetorque. Worm gear reducers are available indirect or indirect drive, direct drive modelsare 56C or 145TC flange mount with either right, leftor dual output shafts or a hollow boreoutput. The indirect drive models are shaftinput-shaft output boxes for use withsprocket or pulley drive systems. Theyprovide an effective low cost solution tospeed reduction and increased torque, withhigher tolerances for shock loading thanhelical gear reducers.

In order to select a gearbox speed reducer,you will need to determine the requiredtorque and service factor for the application.Click on "Specs" above for a table that will assist indetermining the service factor. For servicefactors above 1.0, multiply the requiredtorque by the service factor.

Use the Part Number Builder (below the ordering table) to find additional models
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