Rotadairon STH Series Stone Buriers | Model STH-36 & STH-42 | Working Width 38" & 43" | Hydraulic Flow Range 30-55 GPM | For Mini Skid Steers
DESCRIPTION
The STH Series Soil and Stone Burier is expertly designed for mini loaders, offering high-performance soil preparation and debris management in landscaping, green space renovation, and seedbed preparation. The STH 36 and STH 42 models provide flexibility with hitch options for Toro, Ditch Witch, Vermeer, and Bobcat loaders, plus adaptable options for custom carriers. This machine handles tough terrain, tilling, leveling, and burying stones, rubbish, and other debris to leave a clean, even surface ready for seeding.With an oversized rotor and Rotadairon® patented anti-pad blades, the STH Series efficiently overturns soil, buries detritus, and levels the surface. The height-adjustable rear roller provides precise depth control, while the hydraulic motor and oil-bath chain transmission ensure consistent performance.
Key Features
38" & 43" Working Widths Perfect for burying stones, tilling soil, and leveling surfaces in compact landscaping and turf renovation zones
Hydraulic Flow Range: 30–55 GPM Compatible with standard-flow mini skid steers for efficient rotor operation and soil engagement
Max Working Depth: 5.5 Inches Adjustable rear roller allows deep soil processing for seedbed prep and debris burial
Oversized Rotor with 20 or 24 Blades Patented anti-sole blades invert soil and bury rocks, roots, and vegetation in a single pass
400 mm Rotor Diameter Provides aggressive soil mixing and consistent depth control across varied terrain
Grid Finger Spacing: 22 mm (7/8") Filters out large debris while retaining fine soil for a smooth finish
Manual Forward Speed: 0.5–0.9 mph Optimized for controlled operation and thorough soil conditioning
Compact Transport Dimensions STH-36: 52.25" × 60.75" × 24.5" STH-42: 56.75" × 60.75" × 24.5" — easy to store and maneuver on job sites
Multiple Hitch Options Available Models include Toro/Ditch Witch/Vermeer, Bobcat, and Adapt versions for flexible carrier compatibility
Operating Weight Range: 562–650 lbs Balanced for stability and effective ground contact without overloading mini loaders
Detailed Specifications
STH Series Light-Duty Stone Burier
Feature
STH 36
STH 42
Working Width
963 mm (38")
1100 mm (43.25")
Total Width
1330 mm (52.25")
1440 mm (56.75")
Weight
265 kg (584.2 lbs) 280 kg (650.3 lbs) – STH 36 B 255 kg (562.2 lbs) – STH 36 ADAPT
285 kg (628.3 lbs) 275 kg (606.2 lbs) – STH 42 ADAPT
Hydraulic Flow Required
30–45 L/min (7.9–11.8 gpm)
40–55 L/min (10.5–14.5 gpm)
Pressure Range
200–250 Bars (2900–3625 psi)
200–250 Bars (2900–3625 psi)
Max Track Width
1.15 m (45.25") – STH 36 1.00 m (39.33") – STH 36 B
1.30 m (51.25")
Working Depth (Max)
140 mm (5.5")
140 mm (5.5")
Rotor Outer Diameter
400 mm (15.75")
400 mm (15.75")
Blade Count
20
24
Grid Finger Spacing
22 mm (7/8")
22 mm (7/8")
Forward Speed
0.5–0.9 mph
0.5–0.9 mph
Transport Dimensions
1325×1545×620 mm (52.25"×60.75"×24.5")
1440×1545×620 mm (56.75"×60.75"×24.5")
Manuals & Documents
General Warranty Info:
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!
Videos
Shipping
General Shipping Info:
Instantly calculate shipping quotesto the lower 48 states by1.adding this product to your cart,2.click continue to the checkout page and3.enter your shipping address to check rates. Contact us for quotes for shipping to Hawaii, Alaska, Canada, Mexico and Internationally.
Complimentary lift gate serviceon all freight shipments where it’s possible. We guarantee safe delivery!
Low shipping rates for customers. We have negotiated the best possible rates for customers from our trusted carriers (ODFL, ESTES, UPS, and FedEx).
Negotiate shipping rates if you think we can do better please reach out. Keep in mind some shipping rates also include assembly & configuration as well!
Customer Reviews
Overall rating: 4.6 / 5 from 94 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.
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
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?