Woodland Mills WC68 vs WoodMaxx WM-8M: a 6-inch hydraulic feed or an 8-inch mechanical feed
WC68 and WM-8M are the two main choices for a tractor with low-30s PTO power, such as the Kubota LX4020HSD at 32.6, that is shut out of WC88. Both include it in their published power ratings. WC68 is a 6-inch chipper with a hydraulic roller the operator can slow. WM-8M is an 8-inch chipper with a fixed-speed mechanical feed, whose full 8-inch rating WoodMaxx ties to 50+ PTO hp.
By Acreage Equipment · Reviewed November 8, 2026 · Specification research, not a field test
Consider WC68 for controllable feed near the power limitShortlist WC68 when most branches are under 6 inches, the tractor is between 20 and 50 PTO hp, and the ability to slow the feed matters on a low-power tractor.
Consider WM-8M if occasional larger material justifies itShortlist WM-8M when occasional branches over 6 inches matter more than adjustable feed, and the fixed 58 ft/min feed suits the material.
Observed U.S. seller prices, checked November 7, 2026, from the retained product records. Prices were not refreshed for this comparison. Tax, shipping, options and the final seller quote may change the delivered total; these are dated observations, not a live price or stock feed. Open your saved comparison →
The differences that matter.
01
A range with a ceiling against a minimum only
Woodland Mills lists WC68 at 20–50 PTO hp and ties full 6-inch logs at full infeed speed to over 40. WoodMaxx lists WM-8M at a 19-PTO-hp minimum with no stated maximum, and ties full 8-inch softwood to 50+ PTO hp.
A 32.6-PTO-hp tractor is inside both, but well short of each maker’s full-capacity condition: 7.4 hp for WC68 and about 17 for WM-8M. Expect to feed smaller material or more slowly than the headline diameter on either.
WC68 feeds through a hydraulic roller powered by its own tank and belt-driven pump. WM-8M uses a fixed 58 ft/min mechanical feed with a stop; WoodMaxx’s FAQ contrasts it with the hydraulic WM-8H.
Near the bottom of the power range, WC68 lets the operator slow the feed to avoid stalling. WM-8M has no hydraulic circuit to service, but its feed rate cannot be reduced.
WC68 lists a 6-inch maximum diameter with a 6 × 8-inch throat. WM-8M lists an 8-inch maximum chip diameter.
WM-8M accepts larger material, but its own full-capacity statement needs about 50 PTO hp. On a low-30s tractor, the practical difference in diameter is smaller than the headline numbers suggest.
WC68’s 2024 manual lists 747 lb product weight. WoodMaxx’s page states 775 lb total weight on the three-point hitch; its shipping sections conflict at 950 and 990 lb.
Both are well under a 1,962-lb lift rating at 24 inches. Ask each maker for the operating weight with shaft and fluids.
Consider WC68 for controllable feed near the power limit
Shortlist WC68 when most branches are under 6 inches, the tractor is between 20 and 50 PTO hp, and the ability to slow the feed matters on a low-power tractor.
Consider WM-8M if occasional larger material justifies it
Shortlist WM-8M when occasional branches over 6 inches matter more than adjustable feed, and the fixed 58 ft/min feed suits the material. Ask WoodMaxx what diameter it expects at your PTO rating.
WM-8M’s page states 775 lb on the hitch; its shipping sections give 950 and 990 lb.
Some WM-8M manual sections use WM-8H hydraulic-control wording; WoodMaxx’s FAQ describes WM-8M as mechanical feed.
This comparison reuses the manufacturer evidence retained in the product records reviewed November 7, 2026 (LFS61 price November 6); product pages were not re-fetched on November 8. WC68 uses the current page and the Rev C, May 28, 2024 manual; WM-8M uses the current page, the manual linked from WoodMaxx’s index and WoodMaxx’s FAQ.
FOLLOW THE NUMBERS
Sources & documentation
Research record reviewed November 8, 2026. Confirm the current manual and the exact revision supplied with your machine.
