PTO chipperWoodland Mills
WC46
4″ max. chip diameter · 15–30 PTO hp
Confirm implement weight limits, center of gravity, front ballast and stability in your tractor manual.
Yanmar · COMPACT TRACTOR ATTACHMENTS
The Yanmar SM240 (synchro shuttle) and SM240H (hydrostatic) share a 36.9-gross-hp engine and a 1,558-lb lift at 24 inches, rated 28.2 and 27.5 PTO hp. Both are 1.8–2.5 short of WoodMaxx FM-78’s 30-PTO-hp minimum, and their engine rating is 6.9 over Wallenstein BX36S’s 30.
By Acreage Equipment · Reviewed November 9, 2026 · Specification research, not a field test

PTO WOOD CHIPPERS FOR THE SM240
13 of 19 pto wood chippers we track pass the published power, hitch and speed screen on at least one configuration. “Specs line up” cards come first.
PTO chipperWoodland Mills
4″ max. chip diameter · 15–30 PTO hp
Confirm implement weight limits, center of gravity, front ballast and stability in your tractor manual.
PTO chipperFarmry
5″ max. chip diameter · 15–45 engine hp
Confirm implement weight limits, center of gravity, front ballast and stability in your tractor manual.
PTO chipperWoodland Mills
6″ max. chip diameter · 20–50 PTO hp
Confirm implement weight limits, center of gravity, front ballast and stability in your tractor manual.
PTO chipperWoodMaxx
8″ max. chip diameter · 19 PTO hp minimum; maximum not stated
Confirm the complete operating weight; a shipping weight cannot establish the attachment load.
PTO chipperWallenstein
5″ max. chip diameter · 22–55 engine hp · official U.S. page
Confirm the correct attachment and driveline configuration for the tractor’s PTO speed; listed speed options are discrete settings.
PTO chipperWoodland Mills
5″ max. chip diameter · 12–30 PTO hp in table; manual hitch paragraph says 15–30 — resolve before selection
Resolve the conflicting published specifications for the exact model revision.
7 more possible options in the full comparison table — see all.
FLAIL MOWERS FOR THE SM240
16 of 23 flail mowers we track pass the published power, hitch and speed screen on at least one configuration. Each still has a detail to confirm with the seller.
Flail mowerWoodMaxx
55″ cutting width, inches · 24–45 PTO hp · Hammer blades only
Resolve the conflicting published specifications for the exact model revision.
Flail mowerFarmry
47.2″ cutting width, inches · 25–45 hp · basis unclear
Ask the manufacturer whether the horsepower range means engine or PTO power.
Flail mowerFarmer-Helper
48″ cutting width, inches · 22–65 PTO hp on current page; linked-manual basis/limit conflicts
Confirm the complete operating weight; a shipping weight cannot establish the attachment load.
Flail mowerWoodMaxx
55″ cutting width, inches · 20–45 PTO hp · Y-blades only
Confirm the complete operating weight; a shipping weight cannot establish the attachment load.
Flail mowerFarmry
61″ cutting width · 15–35 hp · basis unclear
Ask the manufacturer whether the horsepower range means engine or PTO power.
Flail mowerTMG Industrial
60″ cutting width · 30–60 hp · basis unclear
Ask the manufacturer whether the horsepower range means engine or PTO power.
10 more possible options in the full comparison table — see all.
U.S. SM240 · synchro shuttle · 4WD · ROPS · independent PTO
Current U.S. Yanmar SM240 from the September 2024 SM Series brochure and the current page. Rear PTO 540 rpm; 3,020 lb total weight.
U.S. SM240H · hydrostatic · 4WD · ROPS · independent PTO
Current U.S. Yanmar SM240H from the September 2024 SM Series brochure and the current page. 3,020 lb total weight.
FOLLOW THE NUMBERS
Research record reviewed November 9, 2026. Confirm the current manual and the exact revision supplied with your machine.
FROM YOUR TRACTOR TO THE JOB
Woodland Mills rates WC46 and TFG55 to 30 PTO hp, and the Yanmar SM240’s 28.2 (synchro) and SM240H’s 27.5 (HST) are inside by 1.8 and 2.5. WC68, WoodMaxx’s four chippers, Farmry WCAP5, Farmer-Helper and Wallenstein BX52S fit too; WC88 does not.
Read the guide →FIELD GUIDEWoodMaxx rates its FM-78 family from 30 PTO hp, and the Yanmar SM240’s 28.2 and SM240H’s 27.5 are 1.8 and 2.5 short. WoodMaxx FM-62, Farmer-Helper FH-EFGC and Farmry LFP47 fit; Farmry LFS, TMG and Land Pride FM2560 pass on one horsepower figure only.
Read the guide →