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THE ACREAGE EQUIPMENT FIELD GUIDE

Tractors just over 50 PTO hp: which chippers and flail mowers drop out

Several attachments stop at 50 PTO hp: Woodland Mills WC68 and, by their manuals, TMG’s TFM60 and TFMS50. Tractors from about 51 to 55 PTO hp, such as the Kubota MX6000 (51.8), M4D-061 (52) and L6070 Premium (53), are over those limits by a few horsepower, and over the 45-hp chippers and mowers by more.

By Acreage Equipment · Reviewed November 9, 2026 · Specification research, not a field test

PTO wood chippers at work
In this guide

THE DECISION IN NUMBERS

Tractors between 51 and 60 PTO hp on this site

PTO and engine figures from each tractor’s retained profile, reviewed by November 9, 2026. Engine hp is gross unless noted in the profile.

Scroll the table sideways on smaller screens.

TractorPTO hpEngine hp
Kubota MX6000 HST51.863.4
Kubota M4D-0615265.4
Kubota L6070 Premium HST5360
John Deere 4066R HST57 (brochure) / 52 (order book)65.9
Kubota M4-071 / M4D-0716072.1
John Deere 4075R HST6074.3
Sources for this decision table (6)

What stops at 50

Woodland Mills rates WC68 at 20–50 PTO hp. TMG’s tables list TFM60 and TFMS50 at 30–60 hp, but their manuals say tractor power must not exceed 50 PTO hp. Farmer-Helper FH-BX42 and FH-BX62S, Farmry WCAP5 Pro and WoodMaxx’s FM-62 family stop at 45.

What still fits

WoodMaxx FM-78 (30–65 PTO hp) and Farmer-Helper FH-EFGC155 (25–65 on its page) leave 10–14 hp of room. Land Pride’s FM25 mowers run to 80 hp. Among chippers, Woodland Mills WC88 (from 35 PTO hp), Wallenstein BX72S (50–85 engine hp) and WoodMaxx’s 8-inch chippers fit, and WoodMaxx ties full capacity to 50+ hp.

Engine-rated limits

Engine-rated chippers use a different number. The tractors near 52 PTO hp on this site list 60–66 engine hp, which is over Wallenstein BX52S’s 55 and inside BX72S’s 50–85. Check the engine figure and its standard, not the PTO figure, for these.

When the documents disagree

John Deere’s 4066R lists 57 PTO hp in its brochure and 52 in its May 2026 order book. Either way it is over 50, so the answer is the same. Near the line, use the lower documented figure only after the dealer confirms which applies.

Take these questions with you.

  1. What PTO hp does the manufacturer list for my tractor and transmission?
  2. Does the attachment’s limit come from a table or the operator manual?
  3. Is the attachment rated on engine or PTO power?
  4. Will the attachment maker confirm my tractor above its ceiling?

Keep these questions with your exact tractor and attachment details.

Use these questions in my seller brief

FOLLOW THE NUMBERS

Sources & documentation

Research record reviewed November 9, 2026. Confirm the current manual and the exact revision supplied with your machine.

  1. Kubota current U.S. MX series: model-specific HST and gear specifications
  2. Kubota 2026 full-line catalogPrinted p26: M4 series table: horsepower (gross)* SAE J1995, horsepower (PTO)
  3. Kubota M4 series specification sheet (PDF modified April 2024)Engine Net Power*, PTO Power, PTO speed, 3-point pump capacity, Category I / II, lift capacity at 24 in. behind lift point (ASAE), remote valves, tractor weight
  4. Kubota current U.S. Grand L70 page — exact L6070PRM specifications
  5. John Deere U.S. order book, 5 May 2026 — 4066R base machine (038BLV)Order code 038BLV: engine 65.9 hp gross SAE J1995, PTO 52 hp, HST 3-range
  6. Woodland Mills WC68 official product pageCapacity, including full-diameter/full-infeed-speed condition; price
  7. TMG TFMS50/60/72 manual, 2025-01-09p6: tractor power must not exceed 50 PTO hp; cutting width 1,250 mm
  8. TMG Industrial official U.S. TFM60 product page — Current price, operation weight, width and shipping weightPrice, operation weight, width and 30–60 HP range
  9. WoodMaxx FM-78 official product pageBlack/hammer SKU FM-78-0006; 30–65 PTO hp; 70-in. cut; 80 in. overall; weight; hitch type; price
  10. WoodMaxx 2025-to-current FM series operator manualPrinted p40 / PDF p41: blade-specific PTO requirements, cutting width, fixed extents, hitch category and Category 2 bushings, product weight
  11. Farmer-Helper FH-EFGC155 · Hammer blades official product pageHP Requirements at PTO (25–65); Cutting Width; Overall Width; Weight; price
  12. Wallenstein BX72S official U.S. pageEngine HP Range; Mounting System (Cat I and II); Total Weight; Discharge Chute Height
  13. Wallenstein BX52S official U.S. pageEngine HP Range
  14. Woodland Mills WC88 official U.S. page35–100+ PTO hp; capacity, including full-diameter/full-speed condition; hydraulic infeed; price
  15. Land Pride FM25 operator manual 333-138M (7/1/24)Printed p14 / PDF p18 Tractor Requirements; printed pp16–17 hitch positions; printed p39 / PDF p43 widths, weights, rotor assemblies
  16. Woodland Mills WC68 operator manual, Rev C, 28-May-2024 — Printed p9 product/shipping weights; p12 Cat 1 and PTO range; operation/setup sections
  17. TMG TFM60/68/72 manual — cover v.2022.11.29; filename 2025.01.09 — p6 power; p11 hitch adjustment; p12 specifications
  18. Current linked WC88 operator manual, Rev C, 22-Aug-2022
  19. WoodMaxx manual index: Models 2025 to current
  20. Currently linked EFGC standard manual, Revision 12-12-17, pp16–23
  21. Official EFGC series: fixed models and separate hydraulic-offset kits
  22. Official Betstco manual index
  23. BX72S official support page — current operator/setup documents
  24. BX-S operator manual Z97085_En, Rev Jan-2025 — pp14,18–22,26,28,30,40
  25. PTO shaft instructions Z97844_En, Rev Aug-2024 — tractor/quick-hitch sizing

EQUIPMENT IN THIS GUIDE

Check prices and fit for the attachments discussed.

MAKE THE NEXT CHECK

Continue with the related decision.

FIELD GUIDE

When the tractor is too strong: attachment maximum horsepower

Most horsepower checks look at the minimum. Many small chippers and flail mowers also publish a maximum, and a larger tractor can be outside the range for a lighter attachment. Treat the maximum as a published limit with its own horsepower basis. Ask the maker before assuming a light attachment is the safe choice.

Read the guide →FIELD GUIDE

Tractors near 45 PTO hp: where the small-attachment ceilings stop

Several flails and chippers on this site stop at 45 PTO hp: WoodMaxx FM-62, Farmer-Helper FH-BX62S, Farmry WCAP5 Pro (Category 1) and Farmry LFP47 (basis unspecified). TMG’s TFMS50 stops at 50. A cluster of current tractors sits within 2 hp of 45, and for most of them the transmission, the document or the hitch decides the answer.

Read the guide →FIELD GUIDE

Woodland Mills WC68’s “over 40 PTO hp” line: which tractors clear it

Woodland Mills rates WC68 at 20–50 PTO hp, then ties full 6-inch logs at full infeed speed to over 40 PTO hp. Many mid-size compact tractors sit within a couple of horsepower of that line, and for several the transmission or the document decides it. A tractor exactly at 40 is inside the range but not over the line.

Read the guide →

MAKE THE TRADEOFFS CLEAR

Read a focused comparison.

SIDE BY SIDE

Farmer-Helper FH-EFGC155 vs WoodMaxx FM-62 Y: 60-inch hammer or 55-inch Y-blade

FH-EFGC155 or FM-62 Y?

Read the guide →SIDE BY SIDE

TMG TFM60 vs WoodMaxx FM-62 Y: 60-inch at $2,299 or 55-inch Y-blade at $3,630

Compact tractor: TFM60 or FM-62 Y?

Read the guide →SIDE BY SIDE

Farmer-Helper FH-EFGC125 vs WoodMaxx FM-78: 48-inch or 70-inch fixed hammer

Fixed hammer flail: FH-EFGC125 or FM-78?

Read the guide →
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