Case IH MD83 (HD)

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Features

HITCH

Quick Hitch Compatability

  • MD3 disc mowers now have quick hitch compatibility to conveniently hook up and disconnect
  • Quick hitch capability is standard on the MD83 & MD93 – optional on the MD73

 

Heavy-duty Model Features

Heavy-Duty MD73, MD83 AND MD93

  • 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 shoe. 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

  • MD73, MD83 and MD93 — 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 MD73, MD83 and MD93 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 MD83
CUTTERBAR  
Cutting Width 7 ft. 10 in. (2 400 mm)
Cutting Height .95 - 3.25 in. (24 - 82.5 mm)
Cutter Bar Tilt Angle 0° - -10°
Cutter Bar Operating Range +18° - -30°
Breakaway Angle 19°
Type Cutterbar Modular
Number of Discs 6
Knives Per Disc 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
Swath Width Standard 94 in. (2 388 mm)
DRIVELINE  
Minimum PTO HP Required* 55
Input Speed 540 rpm
PTO Shaft Spline and Size Required 6-spline / 1-3/8 in. (35 mm)
Driveline Protection Belt drive to cutterbar
Overrunning Clutch On PTO shaft
Belt Tension Spring-loaded tensioner with adjustment gauge
HYDRAULICS AND HITCH  
Hydraulic Circuits Required 1 remote
Minimum Relief Pressure Required 1,500 psi (104 bar)
Hitch CAT II
DIMENSIONS AND WEIGHT  
Overall Width 160.25 in. (4 070 mm)
Overall Length 50.5 in. (1 283 mm)
Height - Transport Position 119.5 in. (3 035 mm)**
Shipping Weight 1,610 lb. (730 kg)
Operating Weight 1,460 lb. (662 kg)

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