MechMaxx · NAM · ReviewUpdated 2026-08-05
MechMaxx NAM72 review
The NAM72 is MechMaxx's 72″ fixed NAM deck for 45–85 HP tractors: strong width-per-dollar against Woodmaxx FM-78, but hammer-only and not hydraulic side shift.
Pros and cons
Pros
- 72″ cut at a price well below Woodmaxx FM-78
- 28 heavy 1.8 lb hammers and four-belt drive
- 684 lb machine weight is moderate for a 72″ flail
Cons
- Requires a real 45–85 HP tractor band
- No hydraulic side shift despite the offset hitch geometry
- 1-year warranty and hammer-only setup vs Woodmaxx's 2-year/Y-blade options
01What the NAM72 actually is
Verified specs put NAM72 at 72″ cutting width, 78″ overall width, 45–85 HP, Category 1 hitch, 684 lb machine weight, and 783 lb shipping weight. This updates older catalog assumptions that treated the HP range too low.
It is a center-mount / fixed-offset Cat 1 setup, not hydraulic side shift. No rear remotes are required, and buyers who need fence-line reach should compare the NAM-H or Woodmaxx H models instead.
02Rotor and cutting package
MechMaxx lists a 5″ rotor, 14″ blade swing, 4″ rear roller, four V 17x991 belts with a tensioner, SKF external bearings, and a T6-LF-39 shear-bolt PTO shaft. The blade setup is 28 hammers at about 1.8 lb each.
That package is heavier than the EFS light-duty line and better matched to utility tractors, but it is still a hammer-only flail. If finish-mowing blade choice matters, Woodmaxx keeps the advantage.
03Value vs Woodmaxx FM-78
NAM72's sale price is much lower than Woodmaxx FM-78 while offering a slightly wider 72″ cut. The trade is warranty/support and blade flexibility: MechMaxx lists a 1-year warranty, while Woodmaxx has 2 years and hammer/Y-blade ordering options. NAM72 also lists 50.4 lb of hammers versus about 40.7 lb on FM-78. Do not buy FM-78 as the heavier hammer pack.
For open acreage with a properly sized tractor, NAM72 is the value-width pick. For buyers who want the more conservative support story or a Y-blade setup, FM-78 remains the more complete package.
What's in the box
- NAM72 flail mower deck with 28 hammers
- Category 1 center/fixed-offset mounting
- T6-LF-39 shear-bolt PTO driveline (39–49″)
- 4× V 17x991 belt drive with tensioner
- 4″ rear roller and SKF external rotor bearings
- Tractor with Category 1 three-point hitch and 540 RPM PTO
- Rear hydraulic remote pair (not used on this fixed model)
- Front ballast or loader weight as needed for a 684 lb mower
- Y-blade kit or alternate finish blade setup
- This is not hydraulic side shift even though the hitch geometry has offset/center-mount language.
- Use the verified 45–85 HP range when checking tractor fit.
Full specifications
Normalized from manufacturer data (verified 2026-08-05). Always confirm on the current product page before you order.
- Brand
- MechMaxx
- Model
- NAM72
- Cutting width
- 72″
- Overall width
- 78″
- PTO horsepower
- 45–85 HP
- Min HP per foot of cut
- 7.50
- Hitch
- Category 1
- Offset
- Fixed offset
- Side-shift detail
- Center mount / offset Cat 1 knot; fixed, not hydraulic side shift.
- Rear remotes required
- 0
- Machine weight
- 684 lb
- Shipping weight
- 783 lb
- Cutting height
- 0.6″–2″
- Rotor diameter
- 5″
- Rotor RPM
- Not published
- Blade swing diameter
- 14″
- Blade tip speed
- Not published
- Hammer blades
- 28 × 1.8 lb (50.4 lb total)
- Blade options
- hammer
- Belts
- 4 × V 17x991
- PTO / driveline
- 1-3/8″ Z6 shear-bolt PTO shaft T6-LF-39 (39–49″)
- Drive notes
- 4× V 17x991 belts with tensioner, SKF external bearings, 5″ rotor, 4″ rear roller
- Price (list)
- $2,699
- Warranty
- 1 year
- Specs verified
- 2026-08-05
Tractor compatibility
- Match PTO horsepower to 45–85 HP. Use PTO HP from the tractor manual, not engine HP. Published mins in this catalog are all at least 3.0 HP per foot of cut.
- Machine weight is about 684 lb (shipping ~783 lb) — confirm your tractor’s 3-point lift capacity with margin for the PTO shaft and terrain.
- Hitch requirement: Category 1.
- No rear remotes required for cutting. A standard 540 RPM PTO and matching hitch is enough.
- Ballast the front end on steep or soft ground, especially with wider decks (72″).
Who should buy the NAM72, and who should skip it
Utility-tractor owners mowing open acreage who want a wide hammer flail below Woodmaxx pricing and do not need seat-controlled offset.
Your tractor fits the 45–85 HP band
The verified horsepower range is utility-tractor territory, not a small compact stretch.
Open-acreage width matters most
A 72″ cut reduces passes where side shift and tight maneuvering are not priorities.
You accept MechMaxx's value tradeoff
Lower direct price comes with a 1-year warranty and hammer-only setup.
You need hydraulic offset
NAM72 is not hydraulic side shift; look at NAM68H/NAM72H or Woodmaxx H models.
Your tractor is under 45 HP
Use EFS, NAM60/68, or Woodmaxx mid-size models instead of forcing this width.
You want Y-blade finish options
Woodmaxx FM-78 offers an order-time Y-blade path that NAM72 does not.
Alternatives to consider
Accessories worth planning for
Front ballast / loader ballastOptional
Plan ballast around a 684 lb, 78″ overall mower on utility-tractor terrain.
Spare V 17x991 belt setOptional
The NAM72 uses four belts; stock a full matched set if acreage downtime matters.
Replacement 1.8 lb hammer kitOptional
Wear parts for the 28-hammer rotor; order parts that match the NAM-series hanger hardware.
Freight unloading planOptional
Arrange forks, a loader, or dock access for the roughly 783 lb shipping weight.
Hammers vs Y-blades
Heavy hammer blades
28 hammers · ~1.8 lb each
Best for: Open pasture, rough grass, and heavier field-edge mowing than the EFS line
Finish: Mulched / field finish
The 45–85 HP range and 72″ width make this a utility-tractor hammer flail, not a compact finish mower.
MechMaxx publishes the NAM72 as hammer-only. Cross-shop Woodmaxx FM-78 if Y-blades are part of the plan.
What buyers should know about the NAM72
Public model-specific owner reviews for NAM72 remain thin. Themes below combine manufacturer specs with brand-level MechMaxx flail shopping discussions on TractorByNet and similar forums (retrieved 2026-08-07).
- Wide value deck. Shoppers treat NAM72-class width as a price-led alternative to premium 70″ decks when utility horsepower is available.
- Import vs premium brand perception. Forum comparisons often frame MechMaxx as the budget/import choice against heavier North American brands, with buyers trading warranty story for sticker price.
- Utility-tractor fit. The published 45-85 HP band keeps this away from compact buyers stretching for width.
- No hydraulic side shift. Fixed/center mounting keeps hydraulics simple but limits fence-line and orchard reach versus NAM-H or Woodmaxx H models.
- Hammer-only tradeoff. Buyers wanting finish-blade flexibility still cross-shop Woodmaxx Y-blade options.
Detailed specifications & features
72″ NAM-series PTO flail mower for Category 1 tractors in the verified 45–85 HP range.
Center/fixed-offset Cat 1 mount; this model is not hydraulic side shift and requires zero rear remotes.
Hammer-only rotor with 28 hammers at about 1.8 lb each, 5″ rotor, 14″ blade swing, and 4″ rear roller.
Build highlights include four V 17x991 belts with tensioner, SKF external bearings, and T6-LF-39 shear-bolt PTO shaft.
Key features
- +45–85 HP Category 1 tractor range
- +684 lb machine weight and 783 lb shipping weight
- +28 hammers at approximately 1.8 lb each
- +SKF external bearings
- +T6-LF-39 shear-bolt PTO shaft, 39–49″
Manufacturer-published specs
- SKU
- 150139
- Cutting width
- 72 in
- Overall width
- 78 in
- Cutting height
- 0.6 – 2 in
- PTO horsepower
- 45–85 HP
- Hitch type
- Category 1
- Machine weight
- 684 lb
- Shipping weight
- 783 lb
- Blade count
- 28 hammer blades
- Hammer weight
- Approximately 1.8 lb each
- Blade swing diameter
- 14 in
- Rotor
- 5 in tube
- Rear roller
- 4 in
- Drive belts
- 4× V 17x991
- PTO
- T6-LF-39 shear-bolt, 39–49 in
- Side shift
- Fixed center/offset mount; not hydraulic
- Warranty
- 1 year
Specifications sourced from the manufacturer’s product page on August 5, 2026. Specs may change without notice.
FAQ
What tractor size fits the MechMaxx NAM72?+
Verified MechMaxx specs list NAM72 for 45–85 HP Category 1 tractors. This corrects any lower-range assumptions and makes it a utility-tractor mower.
How wide is the NAM72?+
The verified cutting width is 72″ and overall width is 78″.
Does NAM72 have hydraulic side shift?+
No. It is a center-mount / fixed-offset Cat 1 model, not hydraulic side shift, and it requires zero rear remotes.
What blades come on the NAM72?+
MechMaxx lists 28 hammers at about 1.8 lb each. No Y-blade option is listed for the NAM72.
What belts and PTO does the NAM72 use?+
Verified specs list four V 17x991 belts with a tensioner and a T6-LF-39 shear-bolt PTO shaft, 39–49″.
How heavy is the NAM72?+
Machine weight is 684 lb and shipping weight is 783 lb. Confirm three-point lift capacity, ballast, and freight unloading.
NAM72 vs Woodmaxx FM-78, which should I buy?+
Buy NAM72 for lower price and 72″ cut if a hammer-only deck works. Buy Woodmaxx FM-78 for the 2-year warranty, Y-blade choice, and stronger support positioning.
NAM72 vs NAM72H, what changes?+
NAM72 is the fixed model with zero remotes required. NAM72H adds hydraulic side shift, more weight, more cost, and a rear-remote requirement.
What warranty does the NAM72 include?+
MechMaxx publishes a 1-year warranty on machines (separate engine warranties may apply on some powered products). Against Woodmaxx FM models (2-year parts), that shorter term is the main support tradeoff for MechMaxx's lower sticker. Confirm the current machine warranty and claim path on the MechMaxx site before you buy; coverage language is thinner than Woodmaxx's published parts process.