WoodMaxx MX-8800 vs MX-9900: opening size and service access
Both use operator-controlled hydrostatic feed with reverse. The MX-9900 increases the throat from 8 × 8 to 9 × 9 inches, adds a folding bin and hinged hopper access, and carries a $1,100 higher dated price. Its 25 PTO hp minimum is higher than MX-8800’s 20, but neither minimum guarantees full-diameter chipping. Confirm actual operating weight before choosing either.
By Acreage Equipment · Reviewed November 7, 2026 · Specification research, not a field test
WoodMaxx MX-8800: when to shortlist itConsider when an 8-inch opening is enough, the 20 PTO hp minimum is met and the documented bin layout suits storage, after complete-load and shaft checks.
WoodMaxx MX-9900: when to shortlist itConsider when the 9-inch opening or folding/hinged layout solves a specific need, at least 25 PTO hp is documented, and complete operating weight and tractor limits are confirmed.
MX-8800: panel-assembled infeed bin; folding/hinged MX-9900 features are not documented for it. MX-9900: folding infeed bin and hinged infeed hopper/service access.
Storage and routine knife access can justify the configuration difference without a throughput claim. Confirm actual folded dimensions and clearances.
Consider when an 8-inch opening is enough, the 20 PTO hp minimum is met and the documented bin layout suits storage, after complete-load and shaft checks.
Consider when the 9-inch opening or folding/hinged layout solves a specific need, at least 25 PTO hp is documented, and complete operating weight and tractor limits are confirmed.
Both pages conflict with manuals on downforce and initial-fill wording.
MX-9900 manual/page flywheel weight differs at 220/225 lb.
The MX product pages and current manufacturer-linked manuals were checked November 7, 2026. Other products retain the check dates shown with their sources and prices. Advice interprets published specifications; no physical comparison test or manufacturer-confirmed tractor pairing is claimed.
FOLLOW THE NUMBERS
Sources & documentation
Research record reviewed November 7, 2026. Confirm the current manual and the exact revision supplied with your machine.
