Case IH MD92 (HD) Rotary Disc Mower

MD92 (HD) Rotary Disc Mower for sale at Miller Sellner, MN. Serving your new and used equipment needs from Sleepy Eye, Bingham Lake, Slayton, MN.


Model: MD92 (HD) Rotary Disc Mower

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Heavy-Duty MD72, MD82 and MD92

  • Cutterbar shock protection standard
  • Handles most any crop condition, from wet field to downed crops
  • Built with heat-treated components to stand up to extreme conditions
  • Uses a close-coupled design for maximum ride stability, especially in tight turns

Modular Cutterbar

  • Results in superior crop flow that reduces streaking
  • Ensures quick mowing
  • Heavy-duty frame and rugged canopy use a cantilevered design for smooth crop flow across cutterbar

Smooth-Profile Discs

  • Lift crop into the cutting zone for plug-free mowing
    • Provides a consistent swath for more even drying
  • Each disc is 3/16-in. (4.8-mm)-thick and heat treated to resist damage
  • Discs are shielded by 1/4-in. (6.4-mm)-thick by 8-in. (203-mm)-wide skid shoes
    • The shape of skid shoes work with the tilt of the cutterbar to provide a wide range of mowing heights
  • The gearbox oil in modular cutting discs performs up to 200 hours between changes

Rotating Modular Knife Blades

A rotating modular knife blade provides thorough and uniform crop cutting.

  • Each disc houses two knife blades
  • Blades rotate at 3,000 rpm
  • Disc hardware is specially designed and treated for extreme durability to resist abrasive conditions


Independent, sealed and self-contained modules resist damage.

  • Short, independent splined driveshaft sections link modules
  • Shafts are made from alloy steel with roll-formed splines for strength and are hardened for added durability


MD72, MD82 and MD92 — engineered for ease of maintenance

  • Reversible knife blades change quickly without raising the cutterbed
  • Knife bolts are located on top of the modular discs for easy access
  • Discs can be in any position when performing maintenance
  • If an object is struck during operation, a spring-loaded cutterbed breakaway latch releases
    • Greasable, sintered bushings ensure the cutterbar releases fully when the breakaway latch is activated
  • A heavy-duty, puncture-resistant curtain provides protection for operator and bystanders
  • A polyester-vinyl curtain tilts the crop forward for better flow across the cutterbar
  • High-stress components are protected from debris by T-seal washers and lip seals

Hassle-Free Transport

When in the transport position, the MD72, MD82 and MD92 become compact packages with ride stability and plenty of ground clearance. 

  • The cutterbar transport lock automatically engages for a secure hold
  • The cutterbar is spring-balanced from end to end
    • Allows the mower to glide over uneven terrain smoothly
    • Can be adjusted for all conditions
  • The V-belt tension spring has an easily visible indicator for quick inspection of belt tension
    • Changing belt tension is convenient with single-point adjustment
    • No shields to remove
  • A tethered pin activates the flotation spring for cutting and is repositioned when using the parking stand


Make Case IH
Model MD92
Mower Size  
Number of Discs 7
Position relative to Tractor Rear mount, right side
Cutter Bar  
Cutting width, ft in (m) 9' 2" (2.79)
Swath width, ft in (m) 9' 2" (2.79) std; 6' 6" (1.98) opt.
Cutting height, in (mm) 0.95-3.25 (24-82.5)
Mowing arc, +/- from horizontal, degrees +18 to -28
Breakaway angle, degrees, or description 19
Knives per disc 2
Disc speed, rpm 3000
Disc cutting diameter, in (mm) 19.7 (500)
Drive between discs, bevel or spur gear Bevel gears in sealed modules
Tractor Requirements  
Tractor horsepower (kW) 60 (44.7)
PTO rated speed, rpm 540
Three-point hitch category, or drawbar Category 2
Hydraulic circuits required One single acting
Dimensions and Weight  
Transport width, ft-in (m) 15' 2" (4.62)
Transport length, ft-in (m) 4' 3" (1.28)
Transport height, ft-in (m) 11' 9" (3.58)
Weight, lb (kg) 1,590 (721)
Trailing Tires  
Trailing tire size Hitch mounted, no tires
Sales Literature  
Literature number CIH7180803
Literature date 2009
Manual number 87059272
Manual date 06/01/2005
Entry Date  
Manufacturing Status Current
First Entry Date 12/01/2008
Revision Date 06/01/2013