Disc Mowers

No image set


Case IH disc mowers handle tough conditions while delivering clean cutting performance, maneuverability, durability, and overall value. With a optional models that have Cutting Widths from 5' 6" - 9' 2", Cutting Height of .63" -3.25", Disc Speed UP TO 3,154 RPM and only requiring 35 - 60 HP. ​Case IH stands behind its rugged cutterbar with a 3-Year Warranty HD models only. See B&S Enterprises for details.


  • MD73 (HD)- 6' 8" cutting width, 5 oval cutting discs & cutterbar shock protection is standard
  • MD83 (HD)- 7' 10" cutting width, 6 oval cutting discs & cutterbar shock protection is standard
  • MD93 (HD)- 9' 2" cutting width, 7 oval cutting discs & cutterbar shock protection is standard
  • MDX21 (Econ)-5' 6" cutting width, 4 oval cutting discs, 540-rpm PTO driveline with overrunning clutch to protect the tractor driveline
  • MDX31 (Econ)-6' 9" cutting width, 5 oval cutting discs, 540-rpm PTO driveline with overrunning clutch to protect the tractor driveline
  • MDX41 (Econ)- 7' 11" cutting width, 6 oval cutting discs, 540-rpm PTO driveline with overrunning clutch to protect the tractor driveline
  • HITCH: Quick Hitch Compatibility

  • MD3 disc mowers now have quick hitch compatibility to conveniently hook up and disconnect.
  • Quick hitch capability is standard.
  • Economy Model Features: Features include:

  • Two high-quality, reversible knives per disc on four, five or six oval cutting discs.
  • Rock guards and skid shoes to protect discs and carry the cutterbar over uneven ground.
  • An enclosed gear-driven cutterbar that provides years of reliable service.
  • A 540-rpm PTO driveline with overrunning clutch to protect the tractor driveline.
  • Adjustable flotation springs for changing cutterbar ground pressure.
  • An articulation joint that allows mowers to operate above and below horizontal.
  • A spring-loaded breakaway latch that protects the cutterbar.
  • A single-acting hydraulic cylinder that easily lifts the cutterbar after each pass.
  • 3-point hitch mounting.
  • HD 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.
  • Quick Change Knives:

  • ​Reversible knife blades change quickly without raising the cutterbed.
  • Knife bolts are located on top of the modular discs for easy access.
  • 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.
  • 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.
  • Maintenance:

  • MD73, MD83 and MD93 — engineered for ease of maintenance.
  • 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.
  • 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 re-positioned when using the parking stand.
  • B&S Enterprises, Inc. Case IH Dealer and Technicians- Ready to handle any service issues to keep you going.

  • Contact B&S Enterprises your local expert to learn more, compare specs or schedule a demo.
  • "CLICK HERE" Check it out on our YouTube page in action.

    By clicking “Accept”, you agree to the storing of cookies on your device to enhance site navigation. For more information click "Privacy Policy".