Skip to content

MechMaxx 87" Heavy Duty PTO Flail Mower with Hydraulic Side Shift

$4,399.00

Notify me when back in stock

⏱ Usually Ships in 10-15 days

Free Shipping for this Product!

Description

Clear large fields, roadside areas, and overgrown vegetation with the KDK87H 87" heavy‑duty PTO flail mower featuring hydraulic side shift, an automatic belt tensioner, and a robust 3‑point linkage for stable, wobble‑free operation. This mower is built for farmers, landowners, and municipal crews running 50–90 HP tractors who need wide‑cut efficiency, precise height control, and reliable performance in tough mowing conditions.

Shipping & Returns

  • Free Shipping for this Product!

30‑day Easy Returns. Not happy with your product? We'll take it back, no questions asked.

Why Buy From Us

We’re dedicated to providing the best heavy‑duty equipment built for real‑world jobs.

We partner only with reputable brands to deliver reliable, contractor‑grade tools backed by integrity and service you can trust.

When you buy from UnionBuilt Supply, you’re investing in quality gear and a company committed to supporting the trades and the communities they serve.
A portion of every sale helps fund local trade programs and community rebuilding efforts and more.

Found a better price? We’ll match it with our Price Match Guarantee!


Question? We'd love to have a chat!
Email: Support@unionbuiltsupply.com
Phone: (833) 982-7877


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

MechMaxx 87" Heavy Duty PTO Flail Mower with Hydraulic Side Shift

The MechMaxx 87" Heavy Duty PTO Flail Mower is built for tractors that need a wide cutting path for pasture maintenance, roadside work, and vegetation control. Its hydraulic side‑shift system allows operators to position the mower laterally for working along fences, ditches, and field edges.

A reinforced housing, heavy‑duty rotor, and flail knives support consistent cutting performance in grass and light brush within the mower’s rated capabilities. The 3‑point hitch and PTO connection integrate with compatible tractors for routine land‑maintenance tasks.

Fits Category I/II 3‑Point Tractors

Product manual (PDF)

Download PDF
87-Inch High-Efficiency Mower
87-Inch High-Efficiency Mower

This mower features a 87-inch working width and is suitable for 50–85 HP tractors. Equipped with a CAT 2 three-point hitch, it can be easily attached and provides stable operation across various working conditions, enhancing both efficiency and ease of use.

Flexible side offset design
Flexible side offset design

Connects to the tractor via hydraulic hoses, with hydraulic side-to-side control allowing horizontal movement up to 13.4 inches. Adjustable cutting direction enables easy trimming of distant overgrown areas.

CMR Gearbox
CMR Gearbox

High-quality CMR bearings from Italy efficiently transmit power to all key components of the machine, ensuring smooth and reliable operation, reducing wear, and enhancing both lifespan and efficiency.

Outside Rotor Bearing
Outside Rotor Bearing

Externally mounted bearings allow easy maintenance and repairs. High-quality Swedish SKF shaft bearings handle high loads, run quietly and coolly, ensuring reliable performance.

Openable Back Cover
Openable Back Cover

Features an openable rear cover for easy blade replacement and blockage clearing. Thickened shaft improves mowing efficiency for smoother operation.

Adjustable Height Roller Bar
Adjustable Height Roller Bar

The adjustable height roller bar allows you to raise or lower the cutting height to your desired level, and features a self-cleaning scraper to enhance cutting performance.

  • Assembly & Installation
Product Warranty

MechMaxx 87" Heavy Duty PTO Flail Mower with Hydraulic Side Shift (SKU: 150208) 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.

Power Required 50-90 hp Drive Type Gearbox with belt
Minimum Power 50 hp Number of Belts 5
Working Width 87 in Belt Type AV 17*1245
Overall Width 96 in  Drive Blet Tensioner Yes, bolts tightened
Variable Cutting Height 0-3 in Deck Material 0.2 in 
Horicontal Etending Distance 13 in Side Plate Material 0.3 in
With Rear Open Door 2 pcs rear open door PTO Shaft RPM 540 rpm
Blade Number 20 Driveline Shaft Length 39-50 in
Blade Type Hammer Spline End:   PTO Shaft Spline 1.375"  z6
Blade Weight 2.7 lbs 3-Point Hitch CAT 2
Blade Material Cast steel Tractor Mount Three-point hitch
Rotor Bearing SKF Bearing Gearbox 0il Type 85W/90
Rotor Diameter 6 in Dimensions (L x W x H) 96x46x37 in 
Rotor Swing Diameter 16 in  Packing Size  97x38x28 in
Rotor Thickness 0.3 in Finsh  Durable Powder Coated finish
Rotor Shaft Speed 2082 rpm Warranty 1 year
Blade Speed 31.5 mph Net Weight 1221 lbs
Rotor Rotation Clockwise Gross Weight 1389 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: 30 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
E
Eric A

After careful thought, I decided on a flail mower to replace my brush cutter to cut grass and brush. Upon receiving the mower, it wasn't difficult assemble, and once I was able to get to work, I put it to work. I am using this mower with a Mahindra 4550 which has a outside wheel measurement of 84". As you can see, the NAM68H is almost the exact width of the tractor, and with the slide, I am able to get closer to the fence line than I ever could with the brush cutter. I have the mower set at it's highest height as I am getting used to this type of mower. So far, I would highly recommend this mower. I am hoping it holds up well through the brush cutting I have to do in preparation for more pasture fencing.

D
Dan P

This unit exceeded my expectations. It came well packaged in a sturdy steel crate. It did a great job with brush up to about an inch in diameter. I am planning to upgrade my tractor so I bought one size up. I was worried that the BX22 would struggle to keep it spinning, but there is plenty of torque and the Mowers bearings are very good. Be careful not to cut the driveshaft too short, I measured 3 times just to be sure.

J
Joseph A

This Flail mower is a monster. I have 3 acres of brush and small saplings and it's doing an amazing job of clearing Was very easy to set up. Packaging was very well thought out and easy to assemble. Couldn't be happier with it. Solid attachment.

B
Brendan i A

Overall excellent product. Very well built at an excellent price. One drawback was difficulty in getting it hooked up, as the manual doesn't provide much instruction on assembling the suspension bracket.

J
Jake M

I ordered the Mech Maxx NAM 60 to take place of a 5 foot brush hog that I was not happy with cutting a 5 acre field. These are built very and make a great finished product, dispersing the mulchings evenly, and not spitting out a big clump, but be aware it is not John Deere imatch compatible, which isn't a dealbreaker with me. Moving forward this will be the only tool that I use when cutting pastures or tall grass.

B
Brian H

Great value, cuts great. Ordered this when it was on back order and it delivered right at the estimated time. Like that it comes with hammers instead of knives by default which is an option or add on for most other brands. The hammers give a clean cut but deal with light brush well. The shaft that shipped with the unit had to be slightly trimmed to fit my Mahindra 1533, but was a fairly easy task. Assembly was minimal and instructions fairly clear. The gearbox on the unit has been updated since the instructions, but their support team was quick to answer questions.

M
Matthew

Mower arrived on time. It was packaged well in a sturdy steel frame. Top link mount was easy to assemble. Depending on the size tractor you have it may be necessary to cut the PTO shaft down a few inches. Overall very impressed with the cut of this equipment.

C
Christopher C

Great product. Well built, tough, definitely gets the job done. Couldn't be happier with my purchase. Would highly recommend to anyone looking for a flail mower. Got my NAM68 at a great price

B
Brian

Excellent product and good quality. The paint was a little scratched up from delivery but the item is a farm implement and will be used according so the minor scratches are not a concern. The delivery after order was longer than expected, and communication of the timeline was not great. I would purchase again and with the competitive pricing I would recommend this purchase to others.

G
Gary Y

The CMR gearbox runs very quietly. You can tell the internal bearings are high-spec. Everything goes well! Top-notch experience!

J
Jason R

This flail mower is an absolute beast. Hooked it up to my 65 HP tractor with no issues at all. The PTO connection lined up perfectly and everything felt solid right out of the crate. I've been clearing thick brush and roadside grass for two weeks now and it hasn't skipped a beat.

B
Brandon F

Everything about this machine screams "Heavy Duty." Even the paint finish is thick and durable.

P
Patricia W

The 50-75 HP range is accurate. My 55 HP tractor handles the 72-inch width with no issues at all.

F
Frank G

I received my order in timely manner and the product looks great I haven’t had a chance to use it yet but it seems to be of really good quality.

A
Alvin L

Will took time to explain the hammer vs. Y-blade difference his advice paid off big time.

R
Rose C

The mower arrived ready to go, and within minutes I was clearing my field. Very happy!

D
Daisy F

Cuts everything evenly, even in uneven ground. Very impressed with how smooth it runs.

B
Billy F

Absolutely worth it. The construction quality and balance are superb.

M
Melody H

This machine saved me hours of work compared to my old rotary mower.

W
Wayne G

Really appreciate the design. It's lightweight but feels rock solid at the same time.

H
Harmony P

The cutting power is unbelievable went through tall grass and even saplings without slowing down.

R
Roger P

Setup took under an hour, and it's been performing flawlessly ever since.

S
Serenity J

I've never owned a mower this efficient. It chops, mulches, and leaves the ground looking perfect.

Shop with confidence
  • 🔒 Secure checkout powered by Shopify
  • 🔐 SSL encrypted transactions