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Promac

Promac Forestry Mulcher | Model HDM Series | Cutting Width 48" & 60" | 135 HP | 20+ Ton | For Excavators

Promac Forestry Mulcher | Model HDM Series | Cutting Width 48" & 60" | 135 HP | 20+ Ton | For Excavators

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  • Cutting Width: 48" or 60".
  • Hydraulic Flow: 41–48 GPM.
  • Carrier Power: 135 HP Minimum.
  • Carrier Weight: 20 Tons Minimum; Unit Weight: 2,900–3,050 lbs.
  • For Excavators: Heavy-Duty Forestry Mulching and Land Clearing.
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Product Description

Promac Forestry Mulcher | Model HDM Series | Cutting Width 48" & 60" | 135 HP | 20+ Ton | For Excavators

DESCRIPTION

The Promac HDM Series Heavy Duty Forestry Mulcher is engineered for demanding land clearing, vegetation management, and forestry applications. Featuring a proven boxed-in design, this heavy-duty attachment combines familiar operation with forestry-proven durability and power. Available in 48-inch and 60-inch cutting widths, it supports excavators weighing 20 tons or more with a minimum carrier power of 135 HP. The hydraulic system operates within a 41–48 GPM flow range and supports maximum hydraulic pressure of 5,000 PSI, delivering powerful cutting performance. Its bent-axis piston motor with fixed displacement provides reliable drum operation at speeds up to 2,200 RPM. Built with 44,000 and 100,000 PSI steel, the HDM Series features a front-exposed drum, quad or double carbide tooling, and replaceable wear shoes for demanding forestry work. Accessible service points simplify routine maintenance, while custom mounting options, including pin and wedge configurations, support compatibility with suitable excavator setups.

Key Features

  • Heavy-Duty Forestry Mulching Designed for demanding forestry, land clearing, vegetation management, and brush reduction applications using compatible excavators.
  • 48-Inch and 60-Inch Cutting Widths Choose between two cutting widths to match job requirements, vegetation conditions, and excavator capabilities.
  • 20-Ton Minimum Carrier Weight Engineered for excavators weighing at least 20 tons to support demanding forestry mulching operations.
  • 135 HP Minimum Carrier Power Requires a minimum of 135 horsepower for suitable carrier performance during heavy-duty vegetation clearing.
  • 41–48 GPM Hydraulic Flow Operates within a specified hydraulic flow range to support the mulcher's hydraulic motor and cutting drum.
  • 5,000 PSI Maximum Hydraulic Pressure Supports hydraulic systems with a maximum rated pressure of 5,000 PSI when configured according to equipment requirements.
  • Bent-Axis Piston Motor Features a fixed-displacement bent-axis piston motor designed for consistent hydraulic power delivery during forestry mulching operations.
  • 2,200 RPM Maximum Drum Speed Provides a specified maximum drum speed to support effective cutting and vegetation processing.
  • Quad or Double Carbide Tooling Offers carbide tooling configurations to suit different cutting requirements and demanding forestry work conditions.
  • Front-Exposed Cutting Drum Features a front-exposed drum design for direct access to vegetation during clearing and mulching tasks.
  • Replaceable Wear Shoes Includes replaceable wear shoes to help maintain the attachment and manage wear during repeated ground-level operations.
  • Accessible Service Points Simplifies access to routine maintenance areas, helping operators and technicians perform servicing more conveniently.
  • High-Strength Steel Construction Incorporates specified 44,000 and 100,000 PSI steel grades for demanding forestry applications.
  • Custom Mounting Options Supports custom mounting configurations, including pin and wedge styles, subject to excavator compatibility and mounting specifications.
  • Contractor-Focused Boxed Design Combines a traditional boxed-in construction with a modernized design intended for durability and straightforward operation.

Detailed Specifications

Specification 48-Inch Model 60-Inch Model
Brand Promac Promac
Series HDM Series HDM Series
Product Type Heavy Duty Forestry Mulcher Heavy Duty Forestry Mulcher
Cutting Width 48 in 60 in
Overall Unit Width 62 in 74 in
Minimum Carrier Weight 20 tons 20 tons
Minimum Carrier Power 135 HP 135 HP
Hydraulic Flow Range 41–48 GPM 41–48 GPM
Maximum Hydraulic Pressure 5,000 PSI 5,000 PSI
Standard Motor Type Bent-axis piston, fixed displacement Bent-axis piston, fixed displacement
Maximum Drum Speed 2,200 RPM 2,200 RPM
Unit Weight 2,900 lbs* 3,050 lbs*
Tooling Options Quad or double carbide tooling Quad or double carbide tooling
Drum Configuration Front-exposed drum Front-exposed drum
Wear Components Replaceable wear shoes Replaceable wear shoes
Mounting Options Custom pin, wedge, or other compatible mount Custom pin, wedge, or other compatible mount
Steel Specifications 44,000 and 100,000 PSI steel 44,000 and 100,000 PSI steel
Primary Applications Forestry mulching, brush clearing, land clearing Forestry mulching, brush clearing, land clearing
Carrier Compatibility Compatible excavators meeting specified requirements Compatible excavators meeting specified requirements

 

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Overall rating: 4.7 / 5 from 104 reviews.

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The week before leaving for my mule deer hunt in Wyoming, I seeded the area surrounding the new runway at Wertheimer Airport in Norman. This past Tuesday, I returned to finish the job and was pleased to see that the seed I planted just two weeks earlier was already germinating and coming up nicely. These pictures show the freshly seeded areas alongside those planted two weeks ago. It’s a great comparison and a good example of what proper seedbed preparation and planting can accomplish. I used my Ferminator G-3, which is one impressive piece of equipment. It prepares the seedbed, plants the seed, smooths the soil, and firms everything up for good seed-to-soil contact—all in one efficient operation. I’ve owned and operated several no-till drills over the years, but I can say without hesitation that the Ferminator is the most efficient and versatile seeding machine I’ve ever owned. There’s something pretty satisfying about returning to a job and seeing those first green shoots coming through the ground. That’s when you know your hard work is paying off!

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easy buying process and great communication. Mulcher works great, easily clears overgrown brush and even mulched a 5" thick mulberry tree fairly easily. running it off of my old 331 bobcat with no problem powering the drum at all. Only small issue which isn't a big deal is that the supplied hoses are about 16" too short to operate a full range of motion.

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