GMD Select Series


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.

Contact your dealer for pricing

Find a dealer near you

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



 GMD 16GMD 20GMD 24GMD 28
Working width 5'3" (1.6 m) 6'7" (2.0 m) 7'10" (2.4 m) 9'2" (2.8 m)
Transport width 5'7" (1.69 m) 5'7" (1.69 m) 5'8" (1.72 m) 5'8" (1.72 m)
Number of discs 4 5 6 7
Disc type Standard Disc Standard Disc Standard Disc Standard Disc
Removable Protectadrive® disc bearing stations Standard Standard Standard Standard
Cutterbar suspension Spring Spring Spring Spring
Cutting heigth 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)
Safety breakaway system Mechanical lock Mechanical lock Mechanical lock Mechanical lock
Unlocking system from the tractor cab Via rope Via rope Via rope Via rope
Mowing angle +35° / -22°
(-40° with optional kit)
+35° / -22°
(-40° with optional kit)
+35° / -15° +35° / -15°
Headland turn position Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve Tractor hitch lift plus hydraulic valve
Average swath width 3'7" (1.1 m) 4'7" (1.4 m) 5'7" (1.7 m) 6'7" (2.0 m)
Outside swath wheel Standard Standard Standard Standard
Hitch Cat. 1 or 2 Cat. 1 or 2 Cat. 2 Cat. 2
Transport position Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder Vertical folding via hydraulic cylinder
PTO speed 540 rpm 540 rpm 540 rpm 540 rpm
Overrunning PTO clutch (free wheel) Optional Optional Optional Standard
Minimum PTO power requirement 28 hp (21 kW) 35 hp (25 kW) 42 hp (31 kW) 50 hp (37 kW)
Required tractor hydraulic connections 1 SA 1 SA 1 SA 1 SA
Road lights and signaling Standard Standard Standard Standard
Machine weight approx. 840 lbs (380 kg) 490 lbs (427 kg) 1,200 lbs (544 kg) 1,325 lbs (600 kg)
Shipping information: 2 machines/crate* - gross total weight 2,095 lbs (950 kg) 2,180 lbs (989 kg) 2,475 lbs (1,123 kg) 2,959 lbs (1,342 kg)


Available applications: GMD Select

Logo KUHN ForageXpert

KUHN ForageXpert

For a powerful forage harvesting chain. This new application is available to help you find mowers, mower conditioners, tedders and rakes best adapted to your needs. It will help you optimize forage harvesting according to your current or future equipment purchases.
Download on the App Store

Check all our other KUHN apps to optimize your farm and your life

Get it on Google Play