The differences that matter.
01
Engine-power band
BX52S: 22–55 engine hp. BX72S: 50–85 engine hp.
The published bands overlap only at 50–55 engine hp. Above 55, BX52S exceeds its stated maximum; below 50, BX72S falls below its minimum. These are specification screens, not full-capacity or fit approvals.
02
Diameter and housing opening
BX52S: 5-inch diameter; 5×10-inch housing opening. BX72S: 7-inch diameter; 7×12-inch housing opening.
The larger diameter/opening is a reason to examine BX72S when the material requires it. The long side is not a round-log rating and no full-capacity power condition is established at either model’s minimum.
03
Discharge and hopper mouth
BX52S: 66-inch discharge height; 20×20-inch hopper mouth. BX72S: 82-inch discharge height; 22×25-inch hopper mouth.
The 16-inch taller nominal discharge can matter for collection geometry. Confirm clearances and actual chute travel; neither height nor mouth size proves throw distance or throughput.
04
Folding envelope
BX52S: page 43×42×66 inches folded; conflicting manual 43×55×66 unlabeled. BX72S: page 48×42×82 inches folded; metric width 132 cm conflicts with 42 inches.
Both fold, but storage cannot be settled by the shared 42-inch width labels. Request actual folded dimensions, particularly the BX72S’s added nominal height.
05
Mounting evidence
BX52S: Cat I in current page and manual. BX72S: page Cat I and II; manual Cat I only.
A Category II tractor creates a BX72S-specific question about the actual supplied mounting hardware. Do not treat the page’s extra category as a verified quick-hitch installation.
06
Blade service and base setup
BX52S: four segmented knives; adjustable ski procedure applies. BX72S: four full knives; that adjustable ski procedure is not assigned to this model.
Service parts and alignment setup differ despite the common blade count. Follow the model-specific parts/manual scope; no cutting-quality advantage or adjustable-base capability is inferred.