Promac RSM Rotary Super Mulching Brushcutter

For operations who prioritize mulch size over speed of production, this is the cutter for you. It handles heavy duty brush clearing and produces a final mulch that is small and consistent – similar to a horizontal mulcher.

Promac RSM Features:

  • Heavy duty structural frame construction of fully welded plate.
  • Wear-resistant liner constructed with QT100 plate.
  • Promac-designed and precision-manufactured components including tooling, disc, bearing housing, shafts and drive system.
  • Engineering and design services to match your machine’s auxiliary hydraulic flow to attain the desired disk operating speeds.
  • Shroud doors on each side of the brush cutter to provide multiple cutting options.
  • Renowned Promac warranty, service and support.

Optional Features:

  • Heavy duty flat top pusher pad.
  • Bucket Teeth available for RSM models.
  • Upsized gear or variable displacement motor for superior low speed torque and enhanced disk speed recovery.
  • Custom designed mounting bracket to match the customer’s excavator.
  • Custom color.


  • Land clearing.
  • Forest fire prevention.
  • Road development and maintenance.
  • Pipeline development and maintenance.
  • Trail development and maintenance.
  • Transmission line development and maintenance.
  • Railway development and maintenance.
Product Information
Promac Brush Cutter RSM 36
RSL 36 RSM 36 RSM 52
Excavator Size (tons) Min: 5 | Max: 12 15+ 18+
Cut Width 36" 36" 52"
Approx. Weight 1200lb 2000lb 2600lb
Color Metallic grey / blue Metallic grey / blue Metallic grey / blue
Motor Size (cc) 45 80 107
Motor Type Bent Axis Piston Bent Axis Piston Bent Axis Piston
Flow Min (GPM) 20 32 42
Flow Pressure (PSI) 4000 4000 4000
Tooling Type 6 edge (quad), 12 top, 12 bottom (carbide) 6 edge (quad), 30 top, 30 bottom (carbide) 12 edge (quad), 48 top, 48 bottom (carbide)

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