Case IH MD92 (HD) Rotary Disc Mower

Rotary Disc Mowers MD92 (HD) Rotary Disc Mower

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Features

HEAVY-DUTY FEATURES

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


Maintenance

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 and 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 and no shields to remove.
  • A tethered pin activates the flotation spring for cutting and is repositioned when using the parking stand

Specifications

Model MD92
CUTTERBAR  
Cutting width 9 ft. 2 in. (2800 mm)
Cutting height .95-3.25 in. (24-82.5 mm)
Cutter Bar tilt angle 0° to -10°
Cutter bar operating range +18° to -32°
Breakaway angle 19°
Type cutterbar Modular
Number of discs 7
Knives per discs 2 - reversible, swingaway
Disc cutting diameter 19.7 in. (500 mm)
Disc drive Bevel gears in sealed modules
Disc speed 3,000 RPM
Cutterbar shear protection Std.  Frangible splines in disc drive hub
DRIVELINE  
Minimum PTO hp required 60 hp (44.7 kW)
Input speed 540 RPM
PTO shaft spline & size req. 6-spline/1-3/8 in. (35 mm)
Driveline protection Belt drive to cutter bar
Overrunning clutch On PTO shaft
Belt tension Spring-loaded tensioner with adjustment gauge
HYDRAULICS AND HITCH  
Hydraulic circuits required One remote
Minimum relief pressure req. 1,500 psi (104 bar)
Hitch Category II
DIMENSIONS AND WEIGHT  
Overall width 181.75 in. (4616 mm)
Overall Length 50.5 in. (1283 mm)
Height - transport position 141 in. (3581 mm) **
Shipping weight 1,750 lb. (794 kg)
Operating weight 1,590 lb. (721 kg)

** Transport height is based on 18-inch (457 mm) hitch-pin height above ground on MD82 and MD92 models

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