Promac GRM: Overbuilt. Oversealed. Unstoppable.

Promac Equipment recently released the Gator Rotary Mower (GRM), a highly specialized attachment engineered for one of the harshest cutting environments in the industry: near-aquatic vegetation management. At first glance, the GRM’s price tag surprises anyone used to standard rotary cutters. Lighter, cheaper, “higher-capacity” cutters exist for a fraction of the cost.

But the GRM isn’t a general-purpose mower. It isn’t made for fence lines, pastures, or broadacre clearing; it’s designed for the ditch crews, canal districts, irrigation teams, and municipalities who need a cutter that can survive where others immediately fail.

This mower has a single mission: dominate near-water work with absolute reliability.

Why It’s Worth It

Aquatic-edge mowing destroys ordinary cutters. Operators dip decks into water, heel into steep banks, drag along concrete, or pull vegetation at awkward angles. A normal rotary mower simply isn’t built for that.

The GRM is overbuilt on purpose and engineered for aquatic survival:

• Raised, fully sealed hydraulic motor for splash, dip, and full submersion tolerance
• Four-sided scooping deck designed to lift vegetation from water and steep slopes
• Massive structural frame engineered to handle heeling and side-loading from excavators up to 15 tons
• Reinforced deck geometry for dragging, pushing, and bracing into ditch or canal walls
• Dual blades + 1″ blade carrier provide high inertia for slicing through wet, stringy, or submerged vegetation

For general brush work, it’s overkill.

For canal and runoff maintenance, it’s essential.

Where the GRM Shines

• Canal banks
• Irrigation ditches
• Waterways and levees
• Stormwater channels
• Wet, unstable slopes
• Any environment where the mower is dipped, dragged, or heeled into terrain

If you work near water, this is the tool made for you.

The Financial Angle: This Work Pays Extremely Well

Canal and ditch mowing commands rates far above standard brush cutting because it’s dangerous, specialized, and labor-intensive. Municipalities and irrigation districts pay a premium for contractors with the right equipment.

Typical Rates

• $200–$350+/hr for specialty excavator mowing
• $1,500–$3,000/day depending on job scope

It’s simple: very few contractors can safely and efficiently do this work – so those who can are paid accordingly.

Hand crews cost a fortune and move slowly. A typical ditch-clearing crew (5–12 workers) runs $250–$850/hr with slow production and high liability. One GRM operator can do a full day of hand-crew work in a couple hours, reducing cost and risk for the agency while dramatically increasing contractor profitability.

For contractors already working near water or those looking to expand, the GRM opens doors to some of the most dependable and profitable vegetation-maintenance contracts available. A single week of steady ditch or canal work can cover a massive portion of the investment.

Conclusion: The GRM Isn’t a Brush Cutter — It’s a Specialized Solution

The Promac GRM is not designed to be a “do-everything” cutter. It exists to dominate one of the toughest segments of vegetation management – aquatic-edge maintenance, where reliability and structural strength matter more than anything else.

For the operators who work where land meets water, it’s the only mower engineered to survive and profit in that environment.

Shop the Promac Equipment GRM here!