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Product Description
Hawk Excavator Long Reach Arm | KOMPC400-LRA3872 | Reach 72'2" | 38-45 Ton | For Komatsu Excavators
DESCRIPTION
Upgrade excavation performance with the Hawk Excavator KOMPC400-LRA3872 Long Reach Arm, engineered for Komatsu PC400 excavators in the 38–45 ton class. This 72'2" long reach boom and stick system delivers exceptional digging depth, extended working range, and improved access for challenging excavation applications. Featuring a 40'9" boom length, 30'5" stick length, and 72'7" maximum reach, this excavator attachment is designed for deep trenching, dredging, foundation work, slope excavation, and high-reach material handling.
Built with heavy-duty reinforced construction, advanced hydraulic compatibility, and precision-engineered components, the KOMPC400-LRA3872 Long Reach Arm provides reliable performance in demanding jobsite environments. The system supports a 1.05 yd³ bucket capacity and enhances operator productivity by reducing machine repositioning during deep excavation projects. With quality welding, NDT-tested assemblies, and durable hydraulic hose connections, this excavator long reach boom attachment helps contractors achieve greater efficiency, accuracy, and versatility across a wide range of construction and environmental applications.
Key Features
Extended 72'2" Reach Capability The long reach excavator arm provides outstanding working distance for deep digging, dredging, canal maintenance, and difficult-to-access excavation areas while reducing the need for frequent machine repositioning.
Designed for Komatsu PC400 Excavators Specifically engineered for Komatsu PC400 excavators, this attachment matches 38–45 ton machines to deliver reliable performance, improved digging flexibility, and optimized jobsite productivity.
Heavy-Duty Reinforced Construction Built with high-strength steel components, reinforced sections, and durable fabrication techniques to withstand demanding excavation environments and long-term heavy equipment operation.
Precision Excavation Performance The extended boom and stick design provides improved control for trenching, grading, foundation excavation, and underwater dredging applications requiring accuracy and stability.
Deep Digging Capability Achieve greater excavation depths with a maximum digging depth of 51'1", making this long reach boom ideal for deep foundations, drainage systems, and underground utility projects.
High-Reach Excavation Solution The 72'7" maximum reach allows operators to access challenging work zones, including rivers, slopes, embankments, and elevated demolition areas.
Optimized Bucket Compatibility Supports a 1.05 yd³ bucket capacity, allowing efficient material handling while maintaining productivity during excavation and loading operations.
Advanced Hydraulic Integration Designed with hydraulic hose connection options for smooth attachment operation, improved fluid flow, and compatibility with specialized excavation tools.
Pre-Plumbed Hose System Option Optional pre-installed hydraulic lines and hose brackets simplify setup while helping reduce installation time before starting excavation projects.
Durable Welding Quality Each assembly benefits from quality welding processes and inspection procedures designed to improve structural strength and operational reliability.
NDT Tested Components Non-destructive testing procedures help verify weld integrity and ensure long reach components meet demanding construction requirements.
Versatile Excavation Applications Ideal for dredging, deep excavation, trenching, foundation work, slope shaping, and environmental construction projects.
Improved Jobsite Efficiency The extended working range helps minimize repositioning, improving productivity and reducing downtime during large-scale excavation operations.
Operator Control Enhancement Provides better reach and positioning flexibility, allowing operators to complete complex excavation tasks with increased precision.
Detailed Specifications
Specification
Details
Brand
Hawk Excavator
Product Type
Long Reach Excavator Arm
Model
KOMPC400-LRA3872
Compatibility
Komatsu PC400 Excavators
Excavator Weight Class
38–45 Tons
Total Length
72'2"
Boom Length
40'9"
Stick Length
30'5"
Maximum Reach
72'7"
Maximum Digging Depth
51'1"
Maximum Height
66'9"
Boom Height
11'8"
Bucket Capacity
1.05 yd³ (0.8 m³)
Application
Deep Excavation, Dredging, Trenching, Foundation Work
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.
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Customer Reviews
Overall rating: 4.6 / 5 from 88 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.
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.
Hi, my name is Ken. I’ve had a great experience with Ripping It Outdoors. I purchased a Forax Hp40 Mulcher for my mini excavator. Kayla Patterson is who I dealt with from the beginning until I received it at my house. She has been wonderful to work with and looking forward to working with her with any other orders I purchase. Kayla answered any questions I had and kept me updated throughout the whole process, can’t say it enough just a wonderful person to work with!!
These are great feeders if you don’t have any feral hogs but if the hogs tear off the wiring harness from the timer to the feeder motor, you’re disabled. Then, if you ask for help from Outback, they refer you to the dealer but really you’re on your own for parts and repairs.
I have three Outback feeders that work as designed. They’re 13 years old and have always served well but this feeder misses the mark by a very high margin. I’d NEVER buy this product again.
Feeders need to be dependable and this unit is not.
This is my first experience with Ripping It Outdoors. Fortunately I got Dillion as a representative and everything from sales to shipping was spot on..
Thanks Dillion for your help!!
The only thing is when hooking up the actuator on my ATV. The wire is long going to the plug in. What has happened in the past about this. Is their video showing the usage of the control?
I had a guy from a shop come cut the shafts and hook me up. It went well. I've been using the mulcher and the tractor saw on my two tractors and having fun.
i love it, i'm a little inexperianced with it but i'll learn, i've never messed with chemicals much.
instead of putting it on an atv, i put it on a skid steer