Promac GRM Series: Rotary Mower
Promac Equipment’s GRM Series: Rotary Mower is wetland contractors’ most rugged vegetation management and clearing option for 8-15 ton excavators. Built with a forestry-proven attitude, the GRM exceeds the ordinary with a heightened focus on durability, in-field serviceability, and power. You can find this attachment cutting confidently through waterway overgrowth all across the southeast U.S.
About the Product
Product Features
Available in 33” and 50” inch cutting widths, the GRM Series’ hinged cutting blades, extra-strength bearing drive system with direct drive and shock coupler, powered by bent axis variable 55cc motor, are built to breeze through thick wet brush and small shoreline trees faster than the average mower. The reinforced design, with strong than average deck, featuring 100,000 PSI steel, guarantees bent, broken or dented framing is out of question. A lifted corner input with opposite side built-in pusher point, and scooping sides expand your ability to manage and maneuver in dense vegetation and slippery conditions. The easy-to-remove motor cap and panels to thoughtful service areas means faster maintenance and maximum up time. Some notable application types for this attachment are rural/suburban commercial property maintenance, canal and roadside maintenance, and shoreline maintenance.
- ½ Thick AR400 Flail Blades
- Flat-Top Bracket
- Direct Drive w/ Performance Coupler
- Integrated Pusher/Pivot Point
- 28 or 45cc Fixed Displacement Motor (optional)
- 75cc Variable Displacement Motor (optional)
- Quick-Change or Pin-Type Bracket (optional)
- Reinforced Deck
- Water-Resistant Seals
- Lifted Guide Corner Input
Product Specs
Model
GRM33H55
GRM33H55-C
GRM50H55
GRM50H55-C
Dimensions
79"x 54"x 43"
79"x 54"x 43"
86"x 71"x 43"
86"x 71"x 43"
Excavator Size
8-15 tons
8-15 tons
8-15 tons
8-15 tons
Cut Width
33"
33"
50"
50"
Avg. Flow Range
13-26 GPM
13-26 GPM
20-26 GPM
20-26 GPM
Min. Weight
1040 lbs (w/ Flat Top Bracket)
1340 lbs (Estimated w/ Full Bracket)
1380 lbs (w/ Flat Top Bracket)
1680 lbs (Estimated w/ Full Bracket)
Min. Pressure
3000 psi
3000 psi
3000 psi
3000 psi
Std. Motor Size
55 cc
55 cc
55 cc
55 cc
Std. Motor Type
Bent Axis Variable
Bent Axis Variable
Bent Axis Variable
Bent Axis Variable
Sugg. Blade Speed
1800 RPM
1800 RPM
1800 RPM
1800 RPM
Promac Equipment
Forged in the heart of western forestry over five decades, Promac Equipment designs and manufactures premium mulchers, masticators, and cutters built to thrive in the toughest vegetation management conditions. Known across the industry for uncompromising quality and performance, Promac Equipment products are engineered to keep operators working—not fixing. No gimmicks. No cheap features. Just rock-solid reliability that stands up to the harshest environments. Proudly based and built in British Columbia, Canada—where serious forestry demands serious equipment.
Our warranty policy lasts 30 days. If 30 days have passed since your purchase, we can’t offer you a full refund or exchange.
Warranty PolicyAt Forge Attachment Company, we strive to provide efficient and reliable shipping for all our heavy equipment attachments. Please read the following shipping policy to understand how your order will be processed and delivered.
Shipping PolicyWe understand that sometimes products may not meet expectations or requirements. To ensure a positive shopping experience, we’ve outlined our Refunds & Returns Policy.
Returns Policy