Offset Disk Harrows 

Whether you’re deep-tilling crop residue, leveling irrigated fields or incorporating chemicals, Case IH Heavy-Offset 790 disk harrows are ready to tackle tough soil conditions with an array of flexible options.

Simple Set Up and Adjustment

• Easy-to-adjust leveling turnbuckle
  • Optional hydraulic leveling
• One-step lateral pin adjustment for tongue placement
  • Maintains draft compliance
• Positive mechanical depth control with stop collars
  • Optional single-point hydraulic control
• Transport lock U-channels and rear chain attaching points

Options For Varied Conditions 
All Heavy-Offset 790 disk harrows come with the following options:

• Furrow fillers
  • Smooth soil surface
  • Allow for uniform chemical incorporation
• 31x31.5 15 terra rib tires
  • Provide additional flotation
• Rear hitch
  • Attaches Crumbler^® 160 or other soil conditioner

Case IH Heavy-Offset 790 disk harrows feature state-of-the-art engineering and construction. The machines offer unmatched ruggedness, dependability and consistent performance over years of use.

Rugged Construction
All Heavy-Offset 790 disk harrow models are built with:

• A mainframe of welded steel tubing
• Square, steel, arbor bolts

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
    • Distribute shock loads along the arbor bolt
• All bearings are:
  • Regreasable for extended life
  • Triple sealed to repel debris and moisture

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

Self-Leveling Hitch 

• 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
  • Minimizes draft
  • Adjusts by simply pulling pin and repositioning hitch

Mechanical Depth Control

• 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

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.

Long-Life Durability
Compared to conventional blades under identical conditions, Earth Metal blades:

• Are 30% stronger
• Last up to 20% longer
• Resist stress fractures
• Feature shallow-concavity design
  • Easier to pull than conical or spherical blades
  • Promote better fuel economy

Self-Sharpening
Earth Metal blades actually resharpen as they wear.

• Provides superior cutting performance over an extended blade life
• Helps prevent down time and maintenance labor
• Lowers blade replacement cost

The performance of Earth Metal blades actually improves as they are used, while conventional blades lose their sharpness with wear.