MD-135 Medium Duty 3 Point Offset Flail Mower

Tackle field and roadside mowing with the MD-135 Flail Mower, designed for 25–40 HP tractors. With a 53″ cutting width and 0.75″–2.95″ height adjustment, it handles turf, weeds, and brush up to 1″ with ease.

Built with 1.76 lb forged hammer flails, a Comer gearbox, and an electronically balanced 2200 RPM rotor on SKF bearings, the MD-135 delivers clean, efficient cuts. The 5.3″ rear roller maintains an even finish, while the belt-tension window and replaceable counter knife simplify maintenance.

PTO shaft included      
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The MD-135 Middle Duty Flail Mower is built for 25–40 HP tractors with a CAT I (CAT II bushings included) three-point hitch. It offers a 53″ cutting width and adjustable cutting height from 0.75″ to 2.95″, making it ideal for maintaining large fields, orchards, vineyards, paddocks, and roadside turf up to 1″ brush and up to 40″ grass height.

The MD-135 uses 800 g / 1.76 lb forged, galvanized hammer flails mounted on a 2200 RPM electronically balanced rotor driven by a 3-belt system. A heavy 5.3″-diameter self-cleaning rear roller keeps cut height consistent over uneven terrain. Power is delivered through a Comer gearbox with a 540 RPM PTO, while the rotor runs on SKF ball bearings with CNC bearing seats for durability and smooth operation.

Service is straightforward: a belt-tension inspection window lets you check tension in seconds, and the replaceable counter knife plus front safety flaps improve chopping efficiency while minimizing debris ejection. The mower ships fully assembled in a wooden crate; install the quick-attach CAT-1 hitch (CAT-2 bushings included), fit the safety bars and PTO, and you’re ready to mow ~1.3–2.6 acres/hour depending on conditions.

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Product Manual (PDF)
MD-Series Product Manual.pdf

Tractor Power

Tractor Power
Optimized for 25–40 HP tractors; CAT I hitch with CAT II bushings included for broader compatibility.

53-inch Cutting Width

53″ Cutting Width
Compact 53″ working width is ideal for orchards, vineyards, paddocks, and tighter access areas.

Forged Hammer Flails

Forged Hammer Flails
1.76 lb (800 g) forged & galvanized hammers mulch grass and brush up to 1″ in diameter.

Comer Gearbox & SKF Bearings

Comer Gearbox & SKF Bearings
Reliable Comer transmission and SKF rotor bearings deliver smooth, long-life performance.

Rear Roller Height Control

Rear Roller Height Control
5.3″ self-cleaning rear roller maintains even cut; 0.75″–2.95″ height adjustment.

Belt Tension Window & Counter Knife

Service Access & Counter Knife
Belt-tension test window for quick checks; replaceable counter knife boosts chopping efficiency.

Two-Year Warranty

The MD-135 Middle Duty Flail Mower (SKU: VTI-MD135) has been rigorously tested to withstand tough conditions and includes a two-year warranty on the machine.
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Parts Guide (PDF)
MD-135 Parts Guide.pdf

MD Series Medium Duty Flail Mower offset specifications
Technical Data
MD-135
Dimensions (LxWxH)
64″ x 37″ x 33″
Total weight
634 lb
Cutting width
53″
Adjustable mowing height
0.75″ – 2.95″
3-point hitch
CAT I (CAT II bushings included)
PTO shaft speed
540 RPM
PTO shaft length
39″
Working efficiency per hour (approx.)
1.3 – 2.6 acres
Drive system
3-belt system
Tractor engine power recommended
25–40 HP / 18–30 kW
Material strength (flail shaft cover)
0.15″ (4 mm)
Material strength (side walls)
0.23″ (6 mm)
Flail type
Forged steel hammer
Number of flails
18
Weight per flail
1.76 lb (800 g)
Rotor (flail shaft) speed
2200 RPM
Painting
Powder coated
Wooden transport box (LxWxH)
64″ x 33″ x 32″
Shipping weight
820 lb


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MD-135 Medium Duty 3 Point Offset Flail Mower MD-135 Medium Duty 3 Point Offset Flail Mower
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Additional information

Weight784 lbs
Dimensions64 × 33 × 32 in
Lift Gate Needed

No Liftgate (-$75), With Liftgate