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Shaft mounted gearbox - Torque-Arm

With 60 years of proven dependability and more than 1.8 million units in service throughout the world, Dodge Torque-Arm speed reducers are the standard of the industry and the benchmark to which others are compared. The TXT Torque-Arm is a shaft mount helical gear reducer that mounts directly to the driven shaft with a number of accessories available to produce versatility, cost savings and long life. A long list of standard features makes this reducer suitable for a wide range of environments right off the shelf.


TXT reducers incorporate standard DODGE features:

  • Fourteen reducer sizes
  • HP through 700, and torque ratings through 1,000,000 lb in.
  • Standard 5, 9, 15, and 25 ratios
  • Over 200: 1 speed reduction with V belt drives.
  • Patented twin tapered bushing system
  • Bushing bores 1 inch through 10 inches
  • Premium HNBR oil sealing system and filter breather
  • Heavy duty backstops
  • Steel motor mount system
  • Rugged class 30 cast iron housings with pry slots
  • 14 case sizes through 700 hp (500 kW)
  • Heavy duty sealing system
  • Steel motor mount system
  • Ratio range of 5:1 to 25:1
  • Patented twin tapered bushing system.
  • Perfect fit for today’s harsh duty industries
  • Patented twin taper bushing systems
  • Twin Tapered Bushing system eliminates fretting corrosion and reducer wobble and can be installed with regular hand tools
  • Standard Twin Taper Bushing system for full length shaftsAGMA and ABMA rated
  • Bearings are sized to conform to American Gear Manufacturers Association and American Bearing Manufacturers Association design of an unadjusted minimum of 25,000 hrs average life (L-50) in Class I applications. This is usually twice the bearing life of many competitive reducers that are not designed to this standard.

Common Applications

  • Apron feeder
  • Belt conveyor
  • Bucket conveyor
  • Drag conveyor
  • Ribbon mixer
  • Roller bed
  • Screw conveyor
  • Vibratory feeder

Common Industries

  • Aggregates
  • Mining
  • Cement
  • Asphalt
  • Grain
  • Mixing and milling
  • Oil and Gas - Ethanol
  • Water and Wastewater
  • Forest Products
  • Unit and Baggage Handling

Key Documents / Links