John Deere GM20 Series Rear Discharge Grooming Mowers

Model Photo

 

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)

iMatch™ 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.

Dimensions

Overall machine width 188 cm
74 in.
Cutting width 182.9 cm
72 in.
Cutting height 2.5-12.7 cm
1-5 in.

Weight

Operational 272.2 kg
600 lb
Shipping 306.6 kg
676 lb

Tractor requirements

PTO horsepower 14.9-37.3 kW
20-50 hp
PTO rpm 540 rpm

Hitch

Category Category 1
iMatch™ compatible

Deck

Thickness 8 gauge
4.176 mm
0.1644 in.
Discharge Rear

Gearbox

Mower deck horsepower 37.3 kW
50 hp
Ratio 1:3.1

Blade

Quantity Three
Tip speed, average fpm 5,099.91 m/min
16,732 fpm
Spindles Quantity
Three
Composition
Cast iron
Bearing
Shielded ball
Overlap 2.9 cm
1.125 in.
Dimensions 62.2x5.7 cm
24.5x2.25 in.
Composition Heat treated alloy steel

Caster wheels

Quantity Four
Solid Size
25.4x8.1 cm
10x3.2 in.
27.94x10.16 cm
11x4 in.
Yes
Pnuematic
Bearings Shielded roller

Belts

Type 5VX, polyester/cogged
Quantity Two
Adjustment Slotted track

Set-up time

Labor hours

Warranty

Machine 1 year
Gearbox 1 year

Additional information

Date collected

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