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The ORSI River Compact Series Boom Mowers redefine precision vegetation control with their extended reach and professional-grade cutting performance. Designed for 3-point tractor mounting, these boom mowers deliver unmatched versatility for clearing dense brush, maintaining ditches, and managing overgrown areas that standard mowers can't access.
With five models offering reaches from 11'3" to 19'1", there's an ORSI boom mower to match every job whether you're maintaining roadside verges, agricultural fields, or municipal parks. The 41" cutting head features a direct-drive transmission and multi-knife flail rotor, effortlessly handling grass, weeds, and branches up to 2" thick.
Built with a heavy-duty steel frame and high-performance hydraulic system, these mowers offer 100° rotation, in-cab joystick controls, and a floating head system for smooth operation on uneven terrain. The height-adjustable roller and protective guards ensure consistent cutting while safeguarding the machine.
| Feature | Description | Photo (if available) |
|---|---|---|
| FLOATING GROUND SELF-LEVELING SYSTEM | The Floating Ground Self-Leveling System ensures the cutting head automatically adapts to ground contours, delivering consistent, clean cuts even on uneven terrain maximizing efficiency and operator comfort. | ![]() |
| TWO WAY HEAD OPERATION |
The Two-Way Head Operation allows the cutting head to function in both forward and reverse directions, enhancing versatility and access in tight or complex mowing environments. |
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| HEAT EXCHANGER | The Heat Exchanger system features a 7kW oil cooler with thermostat, ensuring optimal hydraulic performance and extended operation without overheating. | ![]() |
| Oscillating bearinfs with double fifth wheel couplings | Oscillating bearinfs with double fifth wheel couplings | ![]() |
| Easy-Tronic | MECHANICAL CABLE PROPORTIONAL SINGLE LEVER CONTROL 1st AND 2nd MOVEMENT + 3rd AND 4th ELECTRIC MOVEMENT WITH ON-OFF BUTTONS. EASE OF MOVEMENT AND STRENGT | ![]() |
| Specification | River Compact 355 | River Compact 420 | River Compact Plus 450 | River Compact Plus 500 | River Compact Plus 580 |
|---|---|---|---|---|---|
| Cutting Width | 35.5" | 42" | 45" | 50" | 58" |
| Overall Width | 39" | 45" | 49" | 54" | 62" |
| Number of Blades | 3 | 3 | 4 | 4 | 5 |
| Weight | 425 lbs | 460 lbs | 495 lbs | 520 lbs | 575 lbs |
| Flow Rate (GPM) | 15 – 20 | 18 – 22 | 20 – 24 | 22 – 26 | 24 – 28 |
| Hydraulic Pressure (PSI) | 2500 – 3000 | 2500 – 3000 | 2700 – 3200 | 2700 – 3200 | 2800 – 3300 |
| Recommended HP | 35 – 45 HP | 40 – 50 HP | 45 – 55 HP | 50 – 60 HP | 55 – 65 HP |
| Dimension | River Compact 355 | River Compact 420 | River Compact Plus 450 | River Compact Plus 580 |
|---|---|---|---|---|
| A (cm) | 345 | 345 | 447 | 583 |
| B (cm) | 165 | 165 | 192 | 210 |
| C (cm) | 65 | 65 | 120 | 124 |
| D (cm) | 90 | 90 | 118 | 137 |
| E (cm) | 230 | 230 | 294 | 302 |
| F (cm) | 440 | 440 | 492 | 627 |
| G (cm) | 300 | 300 | 288 | 367 |
| H (cm) | 245 | 245 | 300 | 396 |
| I (cm) | 200 | 200 | 237 | 216 |
| L (cm) | 135 | 135 | 160 | 235 |
| M (cm) | 80 | 80 | 105 | 105 |
| N (cm) | 140 | 140 | 190 | 166 |
| O (cm) | 190 | 190 | 226 | 333 |
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
US$40
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