Woodmaxx MX-8500G+ 5-inch PTO Woodchipper Review (2026): 5-inch Self-Feeding PTO Woodchipper
Entry-tier self-feeding 5-inch PTO chipper in the MX-Series, with Woodmaxx's 7-year warranty.
The All New WoodMaxx MX-8500G+ Direct Drive & Gravity Feed Made in the USA PTO Wood Chipper
Manufacturer introduction of the MX-8500G+ covering the direct-drive flywheel, gravity-feed chute, and US manufacturing.
- Self-feeding gravity-fed design
- 7-year MX-Series warranty
- Best-in-class price for a self-feeding 5-inch PTO
- No hydraulic feed
- 5-inch ceiling — step up to MX-8600 for 6-inch
Woodmaxx MX-8500G+ 5-inch PTO Woodchipper specs at a glance
- Brand
- Woodmaxx
- Model
- MX-8500G+
- Power type
- pto
- Max branch diameter
- 5"
- Power
- PTO-driven, 18–50 HP tractor
- Feed system
- Mechanical self-feeding
- Weight
- 720 lb
- Price (MSRP)
- $2,695
- Warranty
- 7 years
Will the MX-8500G+ fit my tractor?
The Woodmaxx MX-8500G+ 5-inch PTO Woodchipper needs 18–50 PTO HP. Here’s how 26 common compact and utility tractors match up — rated PTO HP, not engine HP (after typical 10–15% drivetrain losses).
| Tractor | Engine HP | PTO HP | Hitch | MX-8500G+ verdict |
|---|---|---|---|---|
| Kubota BX23S | 22 | 15 | Cat 1 | Too small |
| Kubota LX2610 | 25 | 19 | Cat 1 | Fits |
| Kubota L2501 | 24 | 19 | Cat 1 | Fits |
| Kubota L3301 | 33 | 26 | Cat 1 | Fits |
| Kubota L3901 | 37 | 30 | Cat 1 | Fits |
| Kubota L4701 | 47 | 38 | Cat 1 | Fits |
| Kubota MX5400 | 55 | 45 | Cat 2 | Fits |
| Kubota M4-071 | 70 | 58 | Cat 2 | Oversized |
| John Deere 1025R | 24 | 18 | Cat 1 | Fits |
| John Deere 2025R | 25 | 19 | Cat 1 | Fits |
| John Deere 3025E | 24.7 | 19 | Cat 1 | Fits |
| John Deere 3032E | 32 | 25 | Cat 1 | Fits |
| John Deere 3039R | 38.2 | 30 | Cat 1 | Fits |
| John Deere 3046R | 45.3 | 37 | Cat 1 | Fits |
| John Deere 4044M | 43.1 | 35 | Cat 1 | Fits |
| John Deere 4066R | 65.9 | 53 | Cat 2 | Fits |
| Mahindra 1533 | 33 | 26 | Cat 1 | Fits |
| Mahindra 2638 HST | 37.4 | 29 | Cat 1 | Fits |
| Massey Ferguson 1735M | 35 | 28 | Cat 1 | Fits |
| Massey Ferguson 2705E | 49 | 40 | Cat 2 | Fits |
| New Holland WORKMASTER 25S | 24.7 | 18 | Cat 1 | Fits |
| New Holland WORKMASTER 35 | 35 | 28 | Cat 1 | Fits |
| Kioti CK2620 | 24.5 | 20 | Cat 1 | Fits |
| Kioti NX4510 | 45 | 38 | Cat 1 | Fits |
| LS MT225S | 24.4 | 18 | Cat 1 | Fits |
| LS MT342 | 41.3 | 32 | Cat 1 | Fits |
“Fits” = within the manufacturer’s rated PTO HP range. “At limit” = below the minimum by 5–15%, will feel underpowered on seasoned hardwood. “Too small” = undersized for reliable chipping. “Oversized” = above range (works but overkill).
Who should buy the MX-8500G+ — and who should skip it
- You own a tractor with 18–50 PTO HP and a Category 1 three-point hitch.
- Your typical branches are 3–5 inches in diameter.
- You chip mostly straight material and want the simpler, more reliable self-feeding mechanism (fewer hydraulic components to service).
- You plan to keep the chipper 7+ years and value the 7-year warranty.
- You want a capable chipper under $3k without stepping up to commercial-grade pricing.
- You don't own a tractor. A gas-standalone chipper of comparable capacity is the right category for you.
- Your branches regularly exceed 5 inches. Step up to a 7-inch-capacity chipper — forcing this unit at the limit bogs the feed and accelerates blade wear.
MX-8500G+blade replacement & sharpening
MX-Series uses A8 tool steel — expect 30–40 hours per edge on mixed hardwood before a sharpening.
Both flywheel knives are reversible, so flip before you sharpen: a single set gives you roughly 60–80 hours of cut life.
Woodmaxx sells the blades direct; keep a factory set on hand for the 7-year warranty window.
- Blade count
- 2 flywheel knives
- Bed knife
- Yes — fixed anvil
- Sharpening angle
- 30–40°
- Reversible
- Yes — doubles edge life
- Blade material
- A8 tool steel
- Replacement set
- $130–$180
- Sharpening interval
- 30–40 hours
- Bolt torque
- 45–55 ft-lb
- 01Stop the machine and isolate power
Disengage the PTO, shut the tractor off, and remove the key. Wait 60+ seconds for the MX-8500G+ flywheel to stop completely — it coasts longer than the engine.
- 02Open the discharge or flywheel access cover
Remove the bolts on the MX-8500G+ flywheel access hood (or flip the hinged hood if equipped). Swing it clear so you have line-of-sight to every blade position.
- 03Rotate the flywheel to the first blade
Turn the flywheel by hand until the first of the 2 knives is aligned with the access opening. Mark it "1" with a paint pen so you can keep track of orientation.
- 04Break the blade bolts loose
Use a breaker bar on each of the 2 blade bolts. Woodmaxx and Woodland Mills both thread-lock these at the factory; heat gently if they don't yield. Do not pry on the flywheel itself.
- 05Slide the blade out and inspect
Remove the blade and inspect for cracks, nicks deeper than 1/16", and rounded bevels. A cracked blade goes straight in the scrap bin — never re-sharpened.
- 06Flip or replace the blade
The MX-8500G+ uses 2 reversible knives. If the secondary edge is still clean, simply flip the blade for a fresh edge. If both edges are worn, sharpen at 30–40° on a belt sander — quench every 10–15 seconds to avoid bluing the A8 tool steel.
- 07Balance the set
Remove equal material from every blade in the set. On the MX-8500G+'s 2-knife flywheel, even a 1–2 gram imbalance shows up as vibration at operating RPM. Weigh on a gram scale after sharpening.
- 08Reinstall and torque
Apply anti-seize to the bolt threads (not the heads) and torque in a star pattern to 45–55 ft-lb. Use fresh lock washers — reused washers are the #1 cause of a loose blade downstream.
- 09Repeat for every remaining blade
Rotate the flywheel and repeat steps 3–8 for the remaining 1 knives. Then inspect the fixed bed knife — if the edge is rounded, flip or replace it and reset the blade-to-anvil gap to ~0.030" with feeler gauges.
- 10Close up and test-run
Rotate the flywheel by hand one full revolution to confirm no contact with the bed knife or housing. Close the access cover. Start the tractor, engage PTO at low idle, and listen for 30 seconds before ramping to operating RPM. Feed one small test branch before returning to normal work.
MX-8500G+ — frequently asked questions
- How much tractor HP do I need for the MX-8500G+?
- The Woodmaxx MX-8500G+ 5-inch PTO Woodchipper is rated for 18–50 PTO HP. That's tractor PTO horsepower after drivetrain losses — rated engine HP is typically 10–15% higher. A 21 HP engine tractor produces roughly 18 PTO HP and would run this chipper at the minimum. The comfortable working range is 23–45 PTO HP.
- Does the MX-8500G+ fit a Category 1 three-point hitch?
- Yes. The MX-8500G+ mounts to a standard Category 1 three-point hitch and accepts a 540 RPM rear PTO shaft (included). Quick hitch compatibility varies by brand — most John Deere iMatch and Pat's Easy Change hitches accept it with a standard top-link bushing.
- What's the maximum branch diameter the MX-8500G+ can chip?
- The Woodmaxx MX-8500G+ 5-inch PTO Woodchipper is rated for branches up to 5 inches in diameter. Green and softwood branches chip reliably at the rated maximum. Seasoned hardwood at the maximum slows the feed rate and bogs the flywheel more — plan for 4-inch hardwood as your comfortable working size.
- What's the warranty on the MX-8500G+?
- Woodmaxx covers the MX-8500G+ with a 7-year warranty — this is the MX-Series warranty, the longest in the category. It covers manufacturing defects but excludes wearing parts (blades, belts, bearings under normal wear) and cosmetic damage.
- Is the MX-8500G+ self-feeding?
- Yes — the MX-8500G+ uses a gravity + mechanical self-feeding design. Infeed rollers are driven by the flywheel. Works well on clean straight branches; forked or crooked material can hang up on the rollers and need to be manually nudged through.
- How much does the MX-8500G+ weigh?
- The Woodmaxx MX-8500G+ 5-inch PTO Woodchipper weighs approximately 720 lb. Check your tractor's three-point hitch lift capacity before purchase — a Category 1 tractor typically lifts 1,200–1,800 lb at the hitch pins; Category 2 lifts 2,500+ lb.
- How often do the blades on the MX-8500G+ need sharpening?
- For typical property use (20–40 hours per year), sharpen the MX-8500G+'s blades once per season. Heavy hardwood use cuts that to every 15–20 hours. A full replacement set runs roughly $80–$250 depending on blade count and material. See our woodchipper blade sharpening guide for the full process.
- Where is the MX-8500G+ made?
- MX-8500G+ chippers are built with a mix of US-sourced and imported components, assembled and shipped from Woodmaxx's Akron, NY facility. The MX-Series is marketed as using upgraded US-sourced bearings and hydraulics versus the WM-Series.