THE TRADEOFFS, EXPLAINED

WoodMaxx WM-8H vs WM-8M: adjustable hydraulic feed or fixed mechanical feed?

Both WoodMaxx chippers have an 8 × 8-inch throat, but the WM-8H lets you vary feed speed and use powered reverse; the WM-8M uses a fixed mechanical feed with a stop control. The observed $405 premium buys a different feeding system, not a demonstrated throughput advantage. Compare typical branch shapes, service requirements and complete operating weights before choosing.

By Acreage Equipment · Reviewed November 7, 2026 · Specification research, not a field test

Compare these two with my tractor Compare the complete purchase cost →

WoodMaxx

WM-8H

19 PTO hp minimum; maximum not stated · 8″ max. chip diameter

$4,095 checked November 7, 2026

Check current price at WoodMaxx

Specs & tractor check →

WoodMaxx

WM-8M

19 PTO hp minimum; maximum not stated · 8″ max. chip diameter

$3,690 checked November 7, 2026

Check current price at WoodMaxx

Specs & tractor check →

START WITH THE DECISION

WM-8H: when it deserves a closer lookConsider when variable feed and reverse materially help the intended brush work and the confirmed weight, power and hitch checks pass.

WM-8M: when it deserves a closer lookConsider when a fixed mechanical feed suits typical material and the lower observed base price matters, after shaft, power and load confirmation.

Read the evidence behind the choice ↓

Price differences use the official U.S. listings observed November 7, 2026. Product cards retain their own price-check dates. Compare current configured quotes, shipping, tax, options and delivery requirements. Open your saved comparison →

The differences that matter.

Feed adjustment and direction

WM-8H: variable 0–75 ft/min hydraulic feed with powered reverse. WM-8M: fixed 58 ft/min mechanical feed with stop; no powered reverse.

Choose the feed controls needed for changing branch size and shape; maximum feed speed alone is not measured productivity.

Service system

WM-8H: self-contained pump, two feed motors, hydraulic oil/filter. WM-8M: belt-driven oil-bath gearbox and driveshaft to upper roller.

The H adds hydraulic oil/filter upkeep; the M still has a lubricated gearbox and mechanical drive. Neither needs tractor hydraulic remotes.

Observed base price

WM-8H: $4,095 USD. WM-8M: $3,690 USD.

The H was $405 more at the November 7, 2026 observation; compare a current configured quote before purchase.

Weight evidence

WM-8H: operating weight unverified; 990 lb explicitly shipping. WM-8M: 775 lb stated total on hitch; shipping text conflicts at 950/990 lb.

No valid operating-weight difference can be calculated from these labels. Get matched shaft/fluid-inclusive weights.

A CONDITIONAL SHORTLIST

Which direction makes sense?

WM-8H: when it deserves a closer look

Consider when variable feed and reverse materially help the intended brush work and the confirmed weight, power and hitch checks pass.

Check current price at WoodMaxx Prepare questions for the seller

WM-8M: when it deserves a closer look

Consider when a fixed mechanical feed suits typical material and the lower observed base price matters, after shaft, power and load confirmation.

Check current price at WoodMaxx Prepare questions for the seller

Keep these source limits with the decision.

WM-8H minimum power and hydraulic volume labels conflict.

WM-8M shipping and supplied shaft descriptions conflict.

WM-8H’s linked manual gives 6.5 gallons in assembly (p20) and 7 gallons in maintenance (p29). Confirm corrected instructions for the delivered revision; neither value is settled by this comparison.

Official page observations were checked November 7, 2026. Individual manual sources retain their recorded revision and review dates. These are specification comparisons, not hands-on tests.

FOLLOW THE NUMBERS

Sources & documentation

Research record reviewed November 7, 2026. Confirm the current manual and the exact revision supplied with your machine.

WM-8H pageFeed Rate; hydraulic feed sections
WM-8H manualPrinted/PDF pp29–31, hydraulic lubrication/filter
WoodMaxx current manual index
WM-8M pageFeed Rate; Belt Driven Gear Box And Drive Axle System
WM-8M manual linked by current WoodMaxx manual index
WoodMaxx FAQQuestion 1