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Product Description
Promac High Flow Mulcher | Model HSM Series | Width 60"–72" | 29–56 GPM | For Skid Steers
DESCRIPTION
The Promac HSM Series High Flow Skid Steer Mulcher is a heavy-duty forestry attachment engineered for demanding land clearing, vegetation management, and site preparation applications. Designed for operators who prioritize forestry-proven durability, consistent mulching performance, and reliable operation, this professional-grade mulcher delivers efficient material processing without unnecessary complexity. Available in 60-inch and 72-inch cutting widths, it features a variable bent-axis piston motor, 2,800 RPM maximum drum speed, and a 29–56 GPM hydraulic flow range for the 60-inch model or 35–56 GPM for the 72-inch model. Built to handle high-flow carriers with 90 HP minimum power for the 60-inch model and 110 HP for the 72-inch model, it supports demanding forestry and land management work. Additional features include replaceable wear shoes, liners and anvils, bite limiters, a front-exposed drum, and universal mount compatibility. Durable 44,000 and 100,000 PSI steel components help support long-term performance in challenging working conditions.
Key Features
Heavy-Duty Forestry Mulching Designed for demanding vegetation management, land clearing, and site preparation tasks, delivering consistent mulching performance in challenging working environments.
60-Inch and 72-Inch Cutting Widths Choose the 60-inch or 72-inch configuration to match your clearing requirements, jobsite conditions, and high-flow skid steer carrier capabilities.
High-Flow Hydraulic Performance Supports hydraulic flow rates of 29–56 GPM for the 60-inch model and 35–56 GPM for the 72-inch model.
Powerful Carrier Compatibility Requires a minimum of 90 HP for the 60-inch model and 110 HP for the 72-inch model to support demanding forestry applications.
Variable Bent-Axis Piston Motor Features a variable bent-axis piston motor engineered to deliver hydraulic power for effective drum operation and demanding mulching tasks.
High-Speed Mulching Drum Achieves a maximum drum speed of 2,800 RPM to support efficient material processing and consistent vegetation reduction during land clearing.
Multiple Tooling Options Available tooling configurations include chipper, beaver, or double carbide options to suit different vegetation types and operational requirements.
Universal Mount Compatibility Fits a universal mount configuration for compatibility with appropriately equipped high-flow skid steer carriers.
Front-Exposed Drum Design Provides an exposed front drum configuration designed to support vegetation engagement and material processing during forestry and site preparation work.
Replaceable Wear Components Includes replaceable wear shoes, liners, and anvils to help manage wear and simplify maintenance in demanding operating conditions.
Integrated Bite Limiters Incorporates bite limiters to help control material engagement and support consistent mulching performance during operation.
Proportional Shift Function Features proportional shift functionality to support controlled attachment positioning and operational flexibility during vegetation management tasks.
Accessible Service Points Designed with accessible service points to simplify routine maintenance and improve access during equipment servicing.
High-Strength Steel Construction Incorporates 44,000 and 100,000 PSI steel components to support structural durability under demanding forestry operating conditions.
Two Model Configurations The 60-inch unit weighs 2,300 lb, while the 72-inch unit weighs 2,500 lb, allowing operators to evaluate attachment weight and working width against carrier capacity.
Detailed Specifications
Specification
60-Inch Model
72-Inch Model
Brand
Promac
Promac
Product Series
HSM Series
HSM Series
Product Type
High Flow Skid Steer Mulcher
High Flow Skid Steer Mulcher
Model Configuration
HSM60
HSM72
Cutting Width
60 inches
72 inches
Overall Unit Width
72 inches
84 inches
Carrier Grade
High Flow
High Flow
Minimum Carrier Power
90 HP
110 HP
Hydraulic Flow Range
29–56 GPM
35–56 GPM
Maximum Hydraulic Pressure
5,000 PSI
5,000 PSI
Standard Motor Type
Variable Bent-Axis Piston
Variable Bent-Axis Piston
Maximum Drum Speed
2,800 RPM
2,800 RPM
Unit Weight
2,300 lb
2,500 lb
Tooling Options
Chipper, Beaver, or Double Carbide
Chipper, Beaver, or Double Carbide
Mounting Type
Universal Mount
Universal Mount
Drum Design
Front-Exposed Drum
Front-Exposed Drum
Wear Components
Replaceable Wear Shoes, Liners, and Anvils
Replaceable Wear Shoes, Liners, and Anvils
Material Control Feature
Bite Limiters
Bite Limiters
Shift Function
Proportional Shift
Proportional Shift
Service Access
Accessible Service Points
Accessible Service Points
Steel Strength Specifications
44,000 and 100,000 PSI
44,000 and 100,000 PSI
Primary Applications
Forestry Mulching, Land Clearing, Site Preparation
Forestry Mulching, Land Clearing, Site Preparation
Ripping It Outdoors works closely with our manufacturers to supply and support your products warranty needs as best as possible!
The majority of products come with a manufacturer represented warranty against manufacturing defects for at least a 12 month period after the date of sale.
Expendable components and "wear parts" including but not limited to blades, knives, teeth, oil, chain sprockets, skid shoes, knife mounting discs, and similar components are usually excluded from manufacturer warranties.
Please reach out to us for any specific warranty information needed about products and parts you can’t find!
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Customer Reviews
Overall rating: 4.7 / 5 from 104 reviews.
I've started using the mulcher I on several parcels of land 10 acres . I have grind down a couple of 14 inch stumps. Caution the mount bracket behind the mulcher motor exhaust gets extremely hot even with gloves on . But the unit so far seems to works very good it's well put together.
The Firminator G3 is s heavy duty quality machine. The discs worked extremely well and planting and culti-packing is very smooth and easy. Working with Dillon at Ripping It Outdoors was a very good experience and seamless transaction.
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!
Just got my Buffalo Turbine! Love it. Took a little bit to get used to getting the right angle for the nozzle, but not a problem. Side note, works much better if the frame is level as much as possible.
Love it!
Gary Haddock
Seems to be in order delivery wasn't able to use lift gate but tractor was able to take pallet off the truck bed. No damage to machine after visual check. won't know how it runs until rain stops.
Staff at RippingitOutdoors was very quick to call and double check the type of backet needed for the unit to ensure the online order matched( to fit my skid steer quick attachment on my l2501 Kubota). Explained the teeth & belt could be ordered through them directly over the phone when/if needed as well as selling other types of custom made brackets for Utv's ect. All around Great customer service and would purchase from again.
After spending way to much money for forest mulching services I discovered this wonderful machine. It's not a giant powerhouse forest mulcher, but it does everything a property owner needs to maintain a forested property. I wish I would have found it sooner.
The Firminator is well built and functions well. I am having some trouble while planting mixed size seeds. Next time out I’ll try setting it so only the smaller seeds drop out the open it up for the larger seeds.
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.
Over all built well. I like it is all cast iron and metal and not plastic. Had to modify fertilizer disc mount to fit correctly, nothing major, a little grinding. I modified the center link hitch point to accommodate my John Deere quick hitch. Have yet to plant with it but I’m sure it will work perfect. Love the grease fittings everywhere. Reminds me of the old farm equipment I grew up on, and still use periodically.
My firminator RT was delivered in good condition in ND. I will be using it next week. I have a 45 HP John Deere tractor that is supposed to lift 2000 lb but really struggles to lift this 6 foot firminator RT. I will just have to use in as a two pass operation for now.
I do wish there was a better operating manual for this unit. Maybe that is something you can work on.
I will give you an update once I start using it in a few days.
Great piece of equipment. Performs far better than I expected. One piece of advice - if property is significantly overgrown, consider the tractor attachment first to bring down the over growth and then switch to the UTV attachment to maintain property. No complaints worked perfectly.
seeds come out way to fast at lowest setting when planting alfalfa literally the only reason I bought it now I can't even use it and I can't return it so I'm stuck with it for the price you pay you would think it would work!
It’s built solid. It handles Field grass hip high pretty well. With the maintaining the field grass after the first cut, the pasture field is starting to look like a lawn. The 84 inch with the best thing to get for 8 acres. It’s best to order belts for back up in the event if the belts were to break. But overall, I like the product quality is good.
When I think of ripping it outdoors something else comes to mind, but I digress. This spreader is awesome. Works like a champ. The hopper is big enough to do my 1 acre lot for my applications. Just load once and go. I would highly recommend this spreader. It saves a ton of time and is a quality product.
Put this on Kubota 900 with winch hookup. This thing is a beast (within reason). I named it ‘Homie”, cause Homie don’t play. It will take care of stuff up to about 2” in diameter. You still have to remember that this is NOT like the ones on a bobcat or larger machinery. It does have its limits. But all in all I am very satisfied with it. Now on to the good part! The staff at Ripping It are outstanding! Especially Kayla in the office. She has gone above and beyond on making sure everything went right, from ordering to questions about installation. This young lady would be of great value at ANY company ! Her knowledge and personality are like over the top. This is my first experience with Ripping It Outdoors and I can only say positive things about them. With all that being said, I do fill out reviews on things I buy, AND I give a honest review. If it’s bad then you will know it. But if it’s good, well I tell the truth ! Again Kayla, from the bottom of my heart, a great big THANK YOU for all your help and just talking to you. I feel like we’ve know each other for years!
TENT is easy to put up , material is tuff as told....only complaint is that i wish the bottom had about 3 to 4 inches overlap towards the inside so i could install a 2 x4 or something to help hold the tent down in high winds we have here in virginia thanks