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Product Description
Hawk Excavator Long Reach Arm | Model KOMPC400-LRA3868 | Reach 68'11" | 38-45 Ton | For Komatsu Excavators
DESCRIPTION
The Hawk Excavator Komatsu PC400 Long Reach ArmKOMPC400-LRA3868 is engineered to maximize excavation reach, dredging efficiency, deep trenching, and demolition performance for 38-45 ton excavators. Featuring an impressive 68'11" overall length, 38'11" boom, and 28'11" arm, this heavy-duty long reach attachment delivers outstanding precision in hard-to-access work areas while minimizing machine repositioning. Built from high-strength steel with reinforced structural components, it undergoes rigorous stress analysis, CAD simulation, NDT inspection, and precision welding to ensure exceptional durability in demanding environments. The system supports a 1.31 yd³ bucket capacity, making it ideal for river dredging, canal maintenance, slope finishing, foundation excavation, marine construction, and material handling. Optional pre-installed hydraulic lines and slurry discharge hose brackets simplify installation and improve productivity, making this long reach boom and arm system a dependable solution for contractors seeking maximum reach, reliability, and operational efficiency
Key Features
Extended 68'11" Reach Performance enables operators to excavate, dredge, and perform demolition in difficult-to-access areas while reducing machine repositioning, improving productivity, and lowering overall operating time on demanding construction projects.
Designed for 38-45 Ton Excavators to deliver optimal balance, stability, and hydraulic performance while maintaining compatibility with Komatsu PC400 excavators and similar machine configurations.
Heavy-Duty Reinforced Construction utilizes premium high-strength steel, reinforced structural components, and advanced fabrication techniques to withstand continuous heavy excavation and dredging applications.
38'11" Long Boom Design provides exceptional working radius for river dredging, canal cleaning, slope grading, shoreline maintenance, and deep excavation where conventional boom systems cannot effectively operate.
28'11" Precision Stick Assembly improves digging accuracy, grading control, and material placement while offering operators greater flexibility during foundation work, trench excavation, and underwater applications.
Maximum Reach of 69'7" allows contractors to safely access distant excavation points without excessive machine movement, improving efficiency and reducing fuel consumption across large job sites.
Deep Digging Capability reaches depths of up to 48'1", making the attachment ideal for deep utility installation, drainage systems, marine excavation, and infrastructure development.
Large 1.31 yd³ Bucket Capacity increases material handling efficiency, allowing operators to move larger volumes of soil, sand, mud, and aggregate with fewer operating cycles.
Advanced Engineering Validation includes comprehensive stress simulation, structural analysis, and CAD design verification to maximize durability, reliability, and long-term performance.
NDT Quality Tested Weldments ensure every major structural weld meets demanding quality standards for strength, fatigue resistance, and dependable operation under heavy workloads.
Optional Pre-Plumbed Hydraulic System reduces installation time with factory-installed hydraulic lines and hose routing, allowing contractors to begin work faster with minimal setup.
Slurry Hose Bracket Compatibility supports hydraulic dredge pumps and mechanical dredging applications while maintaining organized hose routing and improved operational safety.
High-Precision Hydraulic Control delivers smooth boom and arm movement for accurate grading, trenching, excavation, and material handling even during complex operating conditions.
Versatile Construction Applications make this long reach arm ideal for dredging, bridge construction, flood control, shoreline restoration, mining support, foundation excavation, and environmental projects.
Engineered for Maximum Productivity minimizes downtime through durable construction, optimized geometry, and reliable performance, helping contractors complete projects faster with greater operational efficiency.
Detailed Specifications
Specification
Details
Brand
Hawk Excavator
Product Type
Long Reach Arm System
Model
KOMPC400-LRA3868
Compatible Machine
Komatsu PC400 Excavator
Machine Class
38-45 Ton Excavators
Overall Length
68'11"
Boom Length
38'11"
Arm Length
28'11"
Maximum Reach
69'7"
Maximum Digging Depth
48'1"
Maximum Working Height
64'10"
Boom Height
11'11"
Bucket Capacity
1.31 yd³
Construction Material
High-Strength Reinforced Steel
Hydraulic Lines
Optional Pre-Plumbed Hydraulic Lines
Hydraulic Hose Connections
Pre-Installed
Slurry Hose Brackets
Optional
Engineering Validation
CAD Simulation & Stress Analysis
Quality Inspection
Non-Destructive Testing (NDT)
Primary Applications
Dredging, Deep Excavation, Canal Cleaning, River Maintenance, Marine Construction, Demolition, Slope Finishing, Foundation Excavation
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: 4.5 / 5 from 108 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.
Do not buy a Stout Bucket Trail Boss unless you are a willing mechanic who wants to spend $1700 to get it functional. Crooks, ripoff, terrible experience. Do not buy!!
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.