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John Deere GM20 Series


Maintain a clean and level look with efficient Grooming Mowers. Designed to give a smooth cut on lawns, sporting fields and golf courses.
  • 4 - 9 ft. (1.2 - 2.8 m) cutting widths
  • Single- or dual-belt drive
  • High blade speed for thorough cutting and uniform distribution
  • Cat. 1 iMatch compatible with kit



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Features

Gearbox with spiral gears
Highly engineered and rugged for extra strength Highly engineered and rugged for extra strength
Gearbox cutaway Gearbox cutaway

The rugged gearbox on the GM20 Series Standard-Duty Grooming Mowers feature highly engineered spiral gears to dramatically reduce noise, increase endurance, and transfer more power to the cutting blades.

Safety chain shield
Standard chain shield for added safety Standard chain shield for added safety

GM20 Series Grooming Mowers come standard with a safety chain shield.

Choose from various cutting blades
Three blades per deck Three blades per deck
#

To meet specific mowing needs, choose from two blade types:

  • Low lift
  • High lift (standard)
iMatchâ„¢ quick-hitch conversion kits for grooming mowers
iMatch quick-hitch iMatch quick-hitch

The GM10, GM10E, and GM20 Grooming Mowers are only compatible with iMatch using a kit (code 9630).

Mulching kits for grooming mowers
Kit includes baffles, blades, and guard supports Kit includes baffles, blades, and guard supports
#

A mulching kit is available as an attachment for field conversion. The mulching kit includes unique mulching blades, baffles, and guard supports to produce smaller clippings, which decompose faster than clippings that haven't been mulched.

 

Operators should follow the one-third rule for cutting height when mulching in grass.

 

This mulching kit also does an excellent job when mulching leaves.

Anti-scalping roller conversion kits for GM10E, GM11, and GM20 Series Grooming Mowers
Anti-scalping roller attaches to front of deck Anti-scalping roller attaches to front of deck
#

An anti-scalping roller kit can be ordered as an attachment for field conversion for FM and GM Series Grooming Mowers when it is not standard equipment. The roller is attached to the front of the cutting deck to help reduce scalping.

 

Each kit contains one roller.

Specs & Compare

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Dimensions

GM20 Series
Current Model
Overall machine width188 cm
74 in.
Cutting width182.9 cm
72 in.
Cutting height2.5-12.7 cm
1-5 in.

Weight

Operational272.2 kg
600 lb
Shipping306.6 kg
676 lb

Tractor requirements

PTO horsepower14.9-37.3 kW
20-50 hp
PTO rpm540 rpm

Hitch

CategoryCategory 1
iMatchâ„¢ compatible

Deck

Thickness8 gauge
4.176 mm
0.1644 in.
DischargeRear

Gearbox

Mower deck horsepower37.3 kW
50 hp
Ratio1:3.1

Blade

QuantityThree
Tip speed, average fpm5,099.91 m/min
16,732 fpm
SpindlesQuantity
Three
Composition
Cast iron
Bearing
Shielded ball
Overlap2.9 cm
1.125 in.
Dimensions62.2x5.7 cm
24.5x2.25 in.
CompositionHeat treated alloy steel

Caster wheels

QuantityFour
SolidSize
25.4x8.1 cm
10x3.2 in.
27.94x10.16 cm
11x4 in.
Yes
Pnuematic
BearingsShielded roller

Belts

Type5VX, polyester/cogged
QuantityTwo
AdjustmentSlotted track

Set-up time

Warranty

Machine1 year
Gearbox1 year

Additional information

Offers & Discounts

No current offers.

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