Rotadairon STONY Series Stone Buriers Soil Renovator | Model Stony-75, Stony-90 & Stony-115 | Working Width 29.5", 38" & 43.5" | Horsepower 15-25 HP | For Tractors
DESCRIPTION
The Rotadairon STONY Series is a professional-grade lineup of stone buriers designed for micro and sub-compact tractors. These machines prepare seedbeds by tilling, leveling, mixing, and burying stones, debris, and vegetation in a single pass. With working widths from 29.5" to 43.5", each model features a robust rotor with anti-pad blades, a selection grid, and a rear mesh roller for consistent depth control. Ideal for landscaping, turf renovation, and green space development, the STONY series ensures clean, leveled surfaces ready for seeding — even in challenging soil conditions.
Key Features
Working Widths: 29.5", 38", and 43.5" Tailored for small plots, landscaping, and turf renovation with compact coverage options
Tractor Power Requirement: 15–25 HP Compatible with sub-compact and compact tractors for efficient operation
Maximum Working Depth: 5.5" (140 mm) Adjustable rear roller enables deep soil processing and stone burial
Rotor Diameter: 15.75" (400 mm) Oversized rotor with patented anti-sole blades for aggressive mixing and inversion
Blade Count • STONY 75: 16 blades • STONY 90: 20 blades • STONY 115: 24 blades — optimized for cutting density and soil turnover
Grid Finger Spacing: 22 mm (7/8") Filters out large debris while retaining fine soil for a smooth finish
Transmission System Angle gearbox with chain in oil bath for reliable power transfer
Oil Bath Torque Limiter Protects drivetrain from overload and ensures smooth operation
Forward Speed: 0.5–0.9 mph Optimized for thorough soil conditioning and safe operation
3-Point Hitch Compatibility: Category I & II Secure mounting for a wide range of compact tractors
PTO Speed: 540 RPM Matches standard tractor drivetrains for consistent rotor performance
Transport Dimensions • STONY 75: 47.75" W × 57" L × 32.25" H • STONY 90: 54.5" W × 61.5" L × 32.75" H • STONY 115: 59.75" W × 64" L × 33.25" H
Detailed Specifications
STONY Series Stone Burier
Feature
STONY 75
STONY 90
STONY 115
Working Width
750 mm (29.5")
963 mm (38")
1100 mm (43.5")
Total Width
1210 mm (47.75")
1382 mm (54.5")
1520 mm (59.75")
Working Depth (Max)
140 mm (5.5")
140 mm (5.5")
140 mm (5.5")
Rotor Diameter
400 mm (15.75")
400 mm (15.75")
400 mm (15.75")
Blade Count
16
20
24
Grid Finger Spacing
22 mm (7/8")
22 mm (7/8")
22 mm (7/8")
Weight (Mesh Roller)
265 kg (585 lbs)
285 kg (628 lbs)
340 kg (750 lbs)
Tractor Power Required
15–18 HP
18–25 HP
20–25 HP
PTO Speed
540 RPM
540 RPM
540 RPM
Forward Speed
0.5–0.9 mph
0.5–0.9 mph
0.5–0.9 mph
3-Point Hitch
Category I & II
Category I & II
Category I & II
Transport Dimensions
1210×1450×820 mm
1382×1560×830 mm
1520×1625×845 mm
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?