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MechMaxx NAM72 72'' PTO Driven Flail Mower

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Original Price $3,099.00
Current Price $2,799.00

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Description

Tackle large fields and heavy vegetation with the NAM72 72" PTO flail mower featuring forged flail hammers, front safety chains, and a smooth belt‑drive system for efficient power transfer. Designed for landowners and farmers running 45–85 HP tractors, it delivers strong mulching performance, debris control, and stable Category I 3‑point operation for maintaining wide areas with confidence.

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UnionBuilt Supply is an authorized dealer of MechMaxx. All manufacturer warranties are honored.

Product Overview Product Overview Mobile

MechMaxx 72" PTO Driven Flail Mower

Cut wide areas efficiently with this 72" PTO flail mower designed for tractors maintaining fields, orchards, and large properties. The forged flail hammers and balanced rotor support controlled mulching performance in grass and light brush, while the smooth belt‑drive system helps maintain steady power transfer. A reinforced housing and front safety chains help manage debris movement during operation, supporting predictable cutting results across varied terrain.

The mower’s structure is built for routine land‑maintenance tasks where stability and consistent performance are important. Its 3‑point hitch and PTO configuration integrate with compatible tractors for maintaining open areas, perimeters, and property edges with confidence.

Fits Category I/II 3‑Point Tractors

Product manual (PDF)

Download PDF
Max Cutting Diameter
Max Cutting Diameter

This NAM mower has its 72’’ working width and the work efficiency up to 3600-9250 yd2/h.

Hammers
Hammers

28 long lasting and durable forged flail hammers grind through tough matted grass, weeds and other overgrown vegetation with ease.

PTO shaft(1- 3/8’’Z6)
PTO shaft(1- 3/8’’Z6)

Included PTO shaft for Category 1 hookups make this tiller compatible with most tractor makes and models. T6-LF-39’’with shear bolt ; 39''-49’’

PTO Required
PTO Required

Extremely sturdy flail mower engineered to provide optimal performance when used with tractors with PTO power of 45-85HP.

Adjustable Height Roller Bar
Adjustable Height Roller Bar

Adjustable Height Roller Bar adjusts to raise or lower the cutting height to your desired need.

3 Point Hitch Cat. 1
3 Point Hitch Cat. 1

The three-point connection ensures the stability of the mower connected to the tractor and remains stable when the machine is running, improving mowing efficiency and reducing working time.

Product Warranty

MechMaxx NAM72 72'' PTO Driven Flail Mower (SKU: 150139) includes a standard one-year manufacturer warranty covering defects in materials and workmanship under normal use.

Product Extended Warranty Plans

Extended warranty plans may be available for select products. Contact us to confirm eligibility and coverage details.

Engine Power Required 45-85HP Number Of Belts 4
Working Width 72in Belt Size V Belt 17 X 991
Overall Width 78in Drive Belt Tensioner Yes
Blade Ground Clearance 0.6in-2in  Deck Thickness 0.16in
Max. Cutting Diameter

Depends On The Type Of Grass

Side Plate Thickness 0.25in
Number Of Blades 28 PTO Shaft RPM 540 RPM
Blade Type Hammer Driveline Shaft Length T6-LF-39" with shear bolt ;39"-49"     
Blade Weight 1.8lbs Spline End 1 3/8" Z6
Blade (Tines)Material Cast Steel 3-Point Hitch CAT 1
Rotor Bearing SKF bearing Gearbox Oil Type 85W-90
Roller Diameter 4in Dimensions (L x W x H)  82 x 34 x 26in
Rotor Diameter 5in Finsh  Powder Coat Paint  Galvanized Steel
Rotor Swing Diameter 14in Warranty 1 year
Drive Type Belt drive Weight (N.W./G.W.) 684/783 lbs

WARNlNG: This product can expose you to chemicals including engine exhaust (including diesel engine exhaust when equipped),lead and lead compounds, mineral oils, soots, phthalates, and carbon monoxide which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Certain specification(s) are based on engineering calculations and are not actual measurements. Specification(s) are provided for comparison purposes only and are subject to change without notice. Specification(s)  for your individual equipment will vary based on normal variations in design, manufacturing, operating conditions, and other factors.

  • 5 stars: 16 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
James A

Made very well and works just like it is supposed to. We have only used it one time but it cut good and chops everything up a lot finer than a bush hog does. The shipping was super fast. Very pleased with this purchase from MechMaxx and look forward to our next equipment purchase.

J
James A

Impressed. Very well packaged. Arrived a lot quicker than expected. My only downside is the lack of assembly instructions, wasn't in the owner's manual, and maybe I was just dumb, but I had to take everything back off to access the oil fill plug, then had to take everything off a second time to get the drive shaft on, after that we were good. Used it for the first time, and it cuts a lot better and leaves smaller pieces of cut grass than I expected. This will work great on our pastures and cut down the time it takes to cut them. Definitely recommend this product.

G
Gurdeep s

Awesome mower and works great. Very easy assembly. I did have to cut the PTO shaft to fit but customer service was very friendly and sent me instruction and video,

S
S

This mower runs smoothly on my 55HP tractor, making field maintenance easy and stress-free. It doesn't bog down in thick weeds, and the PTO-driven power feels very efficient. This mower has proven to be a dependable piece of equipment for my farm!

J
James T

It saves me hours of mowing compared to smaller equipment. The wide cutting deck makes it easy to manage larger fields

T
Thomas D

Does better than I expected

E
Eric P

Works great

J
Jeffrey H

It works great. Built well and easy to assemble. Shipped to my home in 9 days.

R
Rodney

Has definitely survived my test. I was able to clear a lot of saplings and undergrowth in a day. Couldn't be more pleased with the performance, especially at this price.

M
M D

Shipping was alarmingly fast, i recieved a notification of being shipped, as it arrived, which was odd but impressive.
The packaging is awesome. Steel frame and shrink wrap. I removed one bar and pushed two supporting bars out of the way, assembled the top link brace hooked it up and lifted it out of the crate with the three point.
The crate is being recycled into a raised bed.
One issue with the toplink brace bolt pattern was resolved with a superfast express overseas shipment. An Honest mistake that was made right almost immediately.
I went through it with a fine tooth comb and everything was already torqued as per manual specs. I am an industrial hvac commisioning technician and have a bachelor's in mechanical engineering, so startup inspection is a huge priority
Im running this on a john deere 2440 with @70hp after its last rebuild. Test run was put through Artemisia tridentata, commonly known as Big Sagebrush, or Great Basin Sagebrush with multiple stems per plant averageing 3 inch in diameter and very dense (barely walking room between them).
running low low gear at pto rpm, it so far has chewed through bushy plants as tall as the tractor.
Realistically ill need to do two passes through the worst of it but there was no way i was getting a brush hog to grind like this flail mower does.
This thing is basically mulching this stuff and it is very good at it.
I only have 5 hours into it but its really looking like a sweetheart deal.
It was delivered with no fluids probably to lower shipping weight so be sure to have some gear oil as per the manual.
One problem is that the manual and the machine itself have two different listed gear oil weights. Assembly instructions arent great, but its really only eight bolts so youll figure it out quick from pictures.

Im actually going to do my first youtube video on the type of sage brush im cutting and the machinery im using likely this summer or early fall. By then ill have chewed through 11 acres

M
Mike B

Compared to Self-Propelled models, this mower is on the heavier side. This means it always has plenty of traction when hooked up to the tractor. Pretty good actually considering the power. I'm very happy with it. This mower is expensive but will pay for itself next summer by not having to pay someone else to mow my lawn.

W
Webster C R

Based on the great price, I did not have high expectations. Boy was I surprised! Welds were clean, mower is very solid, and delivery was in days. My only minor comment is that I received notification that it had shipped only hours before the freight terminal called me. This was a good thing, and i was available to go pick it up, but some advanced "warning" would be appreciated. I will most definitely consider MechMaxx for future needs.

T
TJ

Great machine, it's a beast! It's in such good shape that it doesn't need to be rebuilt before use.

R
Richard T

I have mowed about 10 acres so far and it works and looks great, like it had been mowed with a rotary mower. Some heavy grass, brains and light brush. All with no trouble. Heavy and well built.

L
Lyle d

Works fine. Just what I expected

K
Keith S

Seems to be well built, have not used it yet.

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