The best PTO wood chipper for your tractor is the largest model that fits your actual PTO horsepower, hitch category and lift capacity while still matching the material you process.
For ATE's current PTO lineup, the useful breakpoints are roughly 19+ HP for the DR Power PRO 475P, 15+ PTO HP for the WoodMaxx MX-8600, and 20–50 PTO HP for the Woodland Mills WC68. Always verify the exact tractor specification before ordering.
In This Guide
ATE PTO Wood Chippers by Tractor Power
| Model | Published Power Requirement | Capacity | Best Fit |
|---|---|---|---|
| DR Power PRO 475P | 19–65 HP, 540 PTO, Category 1 | 4.75 in. | Compact tractors, lighter PTO setup |
| WoodMaxx MX-8600 | 15+ PTO HP | Up to 6 in. | Compact/utility tractors needing 6-in. capacity |
| Woodland Mills WC68 | 20–50 PTO HP | Up to 6 in. | Compact/utility tractors, hydraulic infeed |
19–25 HP: Start With Compatibility, Not Maximum Diameter
The DR Power PRO 475P is published for Category 1 tractors, 540 PTO speed and a 19–65 HP range. It is rated for branches up to 4.75 inches.
The WoodMaxx MX-8600 lists a lower 15 PTO HP minimum, but WoodMaxx notes that available PTO power affects how comfortably the machine handles demanding hardwood and full-capacity material.
20–30 PTO HP: The Sweet Spot Opens Up
Once your tractor has around 20–30 PTO HP, more 6-inch options become compatible. The Woodland Mills WC68 is designed for 20–50 PTO HP tractors and adds a self-contained hydraulic infeed system.
30–50 PTO HP: More Capacity Without Running at the Minimum
A tractor comfortably inside a chipper's PTO range generally gives you more operating headroom than one sitting at the minimum. That can matter when feeding hardwood, full-diameter limbs or heavier daily workloads.
This does not mean you should exceed the manufacturer's maximum input requirement. Stay within the published operating range.
Do Not Forget Lift Capacity
PTO horsepower is only one part of compatibility. Check:
- Three-point hitch category
- Lift capacity at the relevant hitch point
- PTO speed
- PTO shaft geometry and setup
- Machine weight
- Clearance around tires and hitch arms
PTO HP vs Engine HP
Do not use the big horsepower number printed on the tractor hood unless the manufacturer explicitly identifies it as PTO horsepower. PTO output is lower than gross engine output on many tractors.
Read our full PTO horsepower guide →
ATE Selection Framework
- Find the tractor's published PTO horsepower.
- Confirm 540 PTO operation if the chipper requires it.
- Confirm hitch category.
- Verify lift capacity.
- Choose capacity based on your normal branch size.
- Leave some power and capacity headroom for difficult material.
Frequently Asked Questions
What PTO chipper works with a 20 HP tractor?
Some models can, but confirm whether that 20 HP figure is engine horsepower or PTO horsepower. The DR Power PRO 475P and WoodMaxx MX-8600 can fall into this range depending on the tractor's actual PTO specification.
Can 25 PTO HP run a 6-inch wood chipper?
Yes, some published 6-inch models are compatible at 25 PTO HP, including the WC68's 20–50 PTO HP range. Practical throughput still depends on material and operating conditions.
Should I choose the biggest chipper my tractor can run?
Not automatically. Capacity, machine weight, infeed design, storage and workload should all be considered.