A little research:
AI Overview
Hydraulic flail mower flow rates vary significantly by size and power, typically ranging from
15-25 GPM for smaller, standard-flow models to
25-45+ GPM for larger, high-flow units, needing pressures often around 3000-4200 PSI, with exact needs depending on the mower's cutting width and target vegetation. You need to match your machine's hydraulic output to the mower's specified GPM and PSI for optimal performance, often requiring a
high-flow setup for serious work.