ROTARY
MOWER

GRM SERIES
33"/ 50"


Forestry-Proven For
Emergency Application

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Southeastern Contractor’s Choice

The

GRM SERIES

Fearlessly slash through stringy, green brush and navigate through the most muddy, wet conditions without worry of bogging down or damage from surprise impact. The GRM is Promac’s no-nonsense, reinforced twist on a classic rotary style mower, featuring a lifted corner for guided input, opposite side scooping frame, and muck-resistant motor and housing. This combination allows you to cut through more than just grass while above water, and scoop debris or gain footing while within water. After the day is done, don’t expect to need any time in the shop after hours, buffing dents out or ordering and replacing worn parts.

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Key Specs:
GRM 33
GRM 50
Excavator Size8-15 Tons8-15 Tons
Cut Width33 Inches50 Inches
Min. Flow Rate12 GPM12 GPM
Min. Weight1040 lbs
(Flat Top Bracket)
1380 lbs
(Flat Top Bracket)
Min. Flow Pressure3000 PSI3000 PSI
Std. Motor Size55 cc 55 cc
Std. Motor TypeBent Axis VariableBent Axis Variable
Disk Speed1800 RPM1800 RPM

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For The Toughest Contracts:

Built-In:

Optional:

1/2″ Thick AR400 Flail Blades

Direct Drive w/ Shock Coupler

Integrated Pusher/Pivot Point

Flat-Top Bracket

28 or 45cc Fixed Displacement Motor

Quick Change or Pin Type Bracket

No-Nonsense:

Made To Last:

Easy-to-Clean Motor Housing & Deck

Reinforced Deck

Water Resistant Seals

Lifted Corner Guided Input

Shock Coupler Rated at 3,426 in-lbs

44,000 & 100,000 PSI Steel

Zinc Chromate Plated Grade 8 Bolts

For The Toughest Contracts:

Built-In:

1/2″ Thick AR400 Flail Blades

Direct Drive w/ Shock Coupler

Integrated Pusher/Pivot Point

Flat-Top Bracket

Optional:

28 or 45cc Fixed Displacement Motor

Quick Change or Pin Type Bracket

No-Nonsense:

Easy-to-Clean Motor Housing & Deck

Reinforced Deck

Water Resistant Seals

Lifted Corner Guided Input

Made To Last:

Shock Coupler Rated at 3,426 in-lbs

44,000 & 100,000 PSI Steel

Zinc Chromate Plated
Grade 8 Bolts

Best Applications:

Drainage & Canal
Maintenance

Roadside Maintenance

Shoreline Maintenance

See For Yourself:

Need Assistance? Ask The Factory