Case IH Heavy-Offset 790

Model Photo



  • Working Width

    11' 1" - 27' 2"

  • Transport Width

    11' 1" -22' 7"

  • Disk Blade Diameter

    28" or 32"

  • Disk Blade Spacing

    10.5" or 12"

Heavy-Offset Disk Harrows

Unmatched Ruggedness, Dependability and Performance
Case IH Heavy-Offset 790 disk harrows are engineered to provideconsistent performance over years of use. Featuring durability-enhancing design, adjustibility to fit varying conditions and self-sharpening Earth Metal® blades.


Designed for Durability

The Case IH Heavy-Offset disk harrows is designed to handle even the toughest conditions.Built with welded steel tubing, nodular iron spools, high-capacity bearings and a self leveling hitch.
  • Nodular Iron Spools

    Unlike steel-fabricated spools on other brands, Case IH cast nodular iron spools:
    • Resist compression up to 20 tons without loosening blades
    • Add greater blade support with bell-shaped design
    • Provide better residue flow with hourglass middle
  • High Capacity Bearings

    Flangent and Cushion Gang® bearings feature:

    • Finely ground inner rings
    • Heavy steel sleeves that distribute shock loads along the arbor bolt
    • Regreasable for extended life
    • Triple sealed to repel debris and moisture

  • Self-Leveling Hitch

    • Exclusive to the Heavy-Offset 790 disk harrows
    • Keeps gangs working at uniform depth from front to rear
    • Transfers weight between tractor and disk
    • Allows even soil penetration on hills
    • Spring-cushioned hitch helps ease blades over obstructions
    • Convenient dial centers disk behind tractor and minimizes draft
    • Adjusts by simply pulling pin and repositioning hitch

Earth Metal® Blades

Earth Metal® Blades for Exceptional Endurance

All Case IH Heavy-Offset 790 disk harrows are equipped with Earth Metal blades. Uniquely formed and heat treated, Earth Metal blades offer exceptional endurance and break resistance for longer equipment life. The notched blades aggressively cut residue and vegetation with excellent cut uniformity.Earth metal blades:

  • Resharpen as they are used, improving performance over time
  • Are 30% stronger and last uo to 20% longer than conventional blades
  • Resist stress fractures
  • Feature shallow-concavity design for easier pulling and better fuel economy


Simple Setup and Adjustment

Adjusting the various settings on the Heavy-Offset 790 is easy, allowing you to respond to varying soil conditions and spend more time in the field.
  • Easy Gang Adjustments

    • Gang angle: Adjustable from 34 – 46 degrees; Adjusts without tools
    • Rear gangs: Adjust laterally to changing field conditions; Line up with front gang furrows as desired
    • Easy-turning crank; Fine-tunes front-to-rear leveling
  • Mechanical Depth Control

    • Provides accurate, repeatable depth
    • Pin-type adjustment
    • Makes depth control convenient, quick and reliable
    • Eliminates risk of hydraulic leakage affecting disk depths
    • Repeatable accuracy
  • Options For Varied Conditions

    All Heavy-Offset 790 disk harrows come with the following options:

    • Furrow fillers for smooth soil surface and to allow for uniform chemical incorporation
    • 31x31.5;15 terra rib tires provide additional flotation
    • Rear hitch to attach Crumbler®​ 160 or other soil conditioner

  • Other Adjustments

    • Easy-to-adjust leveling turnbuckle; optional hydraulic leveling
    • One-step lateral pin adjustment for tongue placement maintains draft compliance
    • Transport lock U-channels and rear chain attaching points
Disk Harrow Type Offset
Folding Folding
Min Working Width ft/in [ m ]20 ft 6 in [6.2]
Max Working Width ft/in [ m ]27 ft 2 in [8.28]
Min Transport Width ft/in [ m ]
Max Transport Width ft/in [ m ]
Min Transport Height ft/in [ m ]
Max Transport Height ft/in [ m ]
Min Total Weight lbs [ kg ]8500 [3856]
Max Total Weight lbs [ kg ]15500 [7031]
Sizes Available, Number Of Widths 3
Disk Blade Spacing inches [ mm ]10.5 [267]
Disk Blade Diameter inches [ mm ]28 [711]
Disk Blade Thickness inches [ mm ]
Blade Edge Profile Notched
Optional Blade Edge Profile Smooth
Blade Concavity
Gang Mounting To Frame Fixed
Front Gang Angle - Degrees 34 to 46 included angle
Rear Gang Angle - Degrees 34 to 46 included angle
Disk Bearings Self-aligning, cartridge type ball bearings
Gang Arbor Bolts inches [ mm ]1.5 [38] square carbon steel
Disk Spool Diameter inches [ mm ]6 [152]
Disk Blade Scraper Spring type, adjustable
Transport Wheel Mounting Two sets of side-by-side tires with axles on rockshaft wheel arms
Transport Tires 12.5 x 15FI
Optional Transport Tires 31-13.5 x 15 terra rib
Wing Wheel Mounting
Wing Tires
Hookup To Tractor Pull - Type
Typical Operating Depth inches [ mm ]11.2 [284]
Depth Control Mechanical std / Hydraulic opt
Fore/aft Leveling Turnbuckle with locking pin
Required Power - Low hp/ft [ kW/m ]12 [29]
Required Power - High hp/ft [ kW/m ]17 [42]
Number Of Widths Available
  • Case IH black min
  • greatplains min
  • rhinoag min
  • woods black min
  • LandPride min
  • unverferth black min
  • Hardee min
  • KMC black min
  • Monosem logo min
  • brand Kubota