GMD Select Series Mowers


Simple Design, Superb Cutting Quality

KUHN GMD Select Series mowers, with working widths of 5’3” to 9’2”, combine a simple structure with key features, resulting in a clean and even cut.

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KUHN GMD Select Series disc mowers are an evolution of our economical machines for small and mid-sized farms. These simple, but durable, mowers offer fast, clean mowing of heavy grasses and delicate forage crops. They incorporate the proven 100 Series cutterbar that has decades of reliable service. As with all current KUHN mowers, Protectadrive® disc shear protection comes standard. A redesigned headstock keeps the mower close to the tractor, reducing overhang and increasing safety when mowing in rough fields. A standard outside swath wheel provides better definition between cut and uncut crop versus swath shields used on competitive machines. Multiple options allow the machine to be adapted to every customers’ particular needs.

Your benefits

Clean and Even Cutting


Proven 100 Series Cutterbar

Proven 100 Series Cutterbar
Due to the high reliability, excellent crop cutting, and overall adaptability to varying terrains, the 100 Series cutterbar is a staple in the Premium Series. See for yourself by taking a closer look at what the 100 Series cutterbar has to offer
  1. Withstands the highest loads: special high-capacity bearings fitted in a one-piece sealed housing are not subject to distortion.
  2. Increased service life: disc pinion shaft bearings endure radial forces for maximum bearing life. This optimum position improves the load balance.
  3. Protection should an obstacle be struck: the Protectadrive® system is designed to protect the cutterbar gear train and minimizes the risk of downtime.
  4. High-wear resistance: knife attachment hardware is fully protected. For added safety, heat-treated steel cups are welded to the disc.
  5. Minimum wear or distortion risks: idler gear fasteners are located in heat treated steel cups. Correct alignment is ensured without the risk of distortion.
  6. Long-term reliability: large-diameter gearwheels in high-tensile forged steel with reinforced teeth.
  7. Perfect sealing: top-quality o-rings used on cutterbar bearing housings for a perfect, leak-free seal.

Standard Discs for Clean Cutting

Standard discs allow for clean cutting and quick crop evacuation. Beveled reversible knives are standard. Ribbed knives are available for rocky conditions.

The shape of the discs allows for a quick transfer of crop rearward, allowing the crop to quickly be formed into a swath. A recut of the grass is therefore avoided. As crop leaves the cutting area, no outside support greatly reduces the chance of crop wrapping.

Swath Wheel

The swath wheel is mounted behind the outer cone and functions to separate cut crop from uncut crop allowing the right tractor wheels to drive over the ground instead of previously cut crop. Advantages of the swath wheel include it fitting entirely under the curtain, not being in contact with the ground and eliminating damage when backing or turning sharply.

Peace of Mind


Protectadrive® Safety

Every minute saved during the hay season is precious. Ultimate protection, from the externally removable Protectadrive disc bearing stations, provides maximum reliability and quick service. In the event of an impact between a disc and an obstacle, the shaft holding the disc can shear just above the bearing. This is thanks to its carefully dimensioned shear groove. As a result, the gear teeth are protected.

Safety Breakaway Mechanism

Should an obstacle be struck, the safety breakaway causes the mower unit to swing slightly backwards. The impact is significantly reduced. You can reset the device simply by reversing.

Adaptable to Varying Terrain


Articulated Cutting Unit

The articulated cutting unit follows ground contours with maximum accuracy even when mowing banks or ditches.

Suspension Spring for Accurate Ground Adaptation

The suspension spring allows accurate adaptation of cutterbar flotation to ground contours. The flotation spring tension is determined by adjusting the main frame height using the tractor’s 3-point lift.


The new hitch design of the Select Series incorporates a more vertical angle of the round attachment frame which greatly improves overall strength. Due to this, the machine mounts closer to the tractor reducing the overhang, power, and ballast required.

The design of the GMD 16 and GMD 20 is slightly different than that of the GMD 24 and GMD 28 mowers. GMD 24 and GMD 28 mowers have a longer top link attachment point due to the increased working widths. It is important to note that all Select Series machines require the operator to lift the hitch and activate the cutterbar lift hydraulic circuit for headland maneuvers. The frame allows up to a 2” offset to the right for tire clearance. The hitch is not designed to be Quick-Hitch compatible.
GMD Select Hitch.png



Working width
Transport width
Transport height
Number of discs
Disc type
Blade retention system
Removable Protectadrive® disc bearing stations
Hydraulic lift mechanism
Cutterbar suspension
Cutting height
Safety breakaway system
Unlocking system from the tractor cab
Mowing angle
Adjustable lower links
Headland turn position
Average swath width
Outside swath wheel
Transport position
PTO speed
Friction slip clutch
Free wheel
Minimum PTO power requirement
Required tractor hydraulic connections
Road lights and signaling
Machine weight approx.
Check chain
GMD 16 GMD 20 GMD 24 GMD 28
5'3" (1.6 m) 6'7" (2.0 m) 7'10" (2.4 m) 9'2" (2.8 m)
5'7" (1.69 m) 5'7" (1.69 m) 5'8" (1.72 m) 5'8" (1.72 m)
7' (2.13 m) 8'4'' (2.54 m) 9'7'' (2.91 m) 10'11'' (3.32 m)
100 Series 100 Series 100 Series 100 Series
4 5 6 7
Standard Disc Standard Disc Standard Disc Standard Disc
Bolted Bolted Bolted Bolted
Standard Standard Standard Standard
Standard Standard Standard Standard
Spring Spring Spring Spring
1.1" - 1.9" (30 - 50 mm) 1.1" - 1.9" (30 - 50 mm) 1.1" - 1.9" (30 - 50 mm) 1.1" - 1.9" (30 - 50 mm)
Mechanical lock Mechanical lock Mechanical lock Mechanical lock
Via rope Via rope Via rope Via rope
+35° / -22°
(-40° with optional kit)
+35° / -22°
(-40° with optional kit)
+35° / -15° +35° / -15°
Standard Standard Standard Standard
Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve
3'7" (1.1 m) 4'7" (1.4 m) 5'7" (1.7 m) 6'7" (2.0 m)
Standard Standard Standard Standard
Cat. 1 or 2 Cat. 1 or 2 Cat. 2 Cat. 2
Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder
540 rpm 540 rpm 540 rpm 540 rpm
Optional Optional Optional Standard
Optional Optional Optional Standard
28 hp (21 kW) 35 hp (25 kW) 42 hp (31 kW) 50 hp (37 kW)
1 SA 1 SA 1 SA 1 SA
Standard Standard Standard Standard
840 lbs (380 kg) 940 lbs (427 kg) 1,200 lbs (544 kg) 1,325 lbs (600 kg)
Standard Standard Standard Standard



Customer Spotlight: GMD Select

  • Sam Johnson with his KUHN GMD 20
    Sam Johnson Logan, Utah

    "The KUHN GMD 20 disc mower works wonderfully for small operations. Getting into tight places for research trials can be a challenge with large equipment. Using this mower makes it easy to reach what is needed without harming anything else around it."

All the testimonials

Available applications: GMD Select

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