PRODUCTS Driving Center Pivot Irrigation

TNT-U-AD™ Gearbox

Designed for towable center pivots and lateral/linear irrigation systems. Purpose-built for higher performance.

The UMC® TNT-U-AD™ gearbox is designed for use on towable center pivots and lateral/linear irrigation systems. The gearbox design allows the worm gear to disengage from the bull gear so the output shaft can rotate freely, enabling users to move irrigation systems from one field to another.

Gear Ratio Bolt Pattern Part Number
50:1 13 Bolt 10143-110A
50:1 CCB 13 Bolt 10143-110B
50:1 11 Bolt 10143-110C

The UMC® TNT-U-AD™ gearbox is purpose built for higher performance and longer life. It features a 50:1 gear ratio, a 2.25″ diameter output shaft, large input bearings, cartridge seals and enhanced gear material that allows for increased load capacity, reduced gear wear and lower operating temperatures. It is a direct replacement for its predecessor, the TNT-2-U™.

Features and Benefits

  • 2.25″ diameter steel output shaft
  • 50:1 gear ratio
  • Cartridge input and output seals
  • Large input bearings
  • Disengage-able worm gear for towing
  • Enhanced gear material that increases load capacity, reduces gear wear and lowers operating temperatures, extending gear life
  • Larger full cycle external expansion chamber with die cast aluminum cover
  • 13-Bolt mounting pattern
  • External seal protectors for input and output seals
  • Dual ended input shaft with hub cap for the unused end
  • Large 3/4″ oil fill and drain plugs for easier maintenance
  • Filled with extreme pressure gear oil
  • Extra long carriage bolts allow use with reinforced rims
  • Positive wheel register

UMC® manufactures a wide range of gearboxes to satisfy any application for your pivot or lateral move system. We do not believe in a “one size fits all” solution. Get the gearbox that is tailored to your specific application. If you need assistance choosing the appropriate gearbox contact us today!