The Eterra Vortex Skid Steer Stump Grinder is a high-performance attachment built for aggressive stump removal in demanding conditions. In our opinion, this is one of the best stump grinders on the market for skid steers today.

What sets the Vortex apart is its low-speed, high-torque design. Instead of relying on high RPM like many grinders, this unit uses a direct drive system with a radial piston motor to deliver consistent torque directly to the cutting wheel. The result is a grinder that doesn’t stall easily and can take down stumps that other grinders struggle with or can’t handle at all.

At the core of the system is a Leonardi stump grinder wheel, widely recognized as a leader in the industry for durability and cutting performance, paired with a SAI (SAW) hydraulic motor, known for its reliability and high torque output in demanding applications.

Features

• High-torque radial piston motor delivers consistent grinding power without bogging down
• Direct drive hub system transfers up to ~95% of hydraulic energy into usable power
• Oil bath enclosed drive eliminates external couplers and reduces maintenance
• Asymmetrical grinding wheel improves visibility and distributes load across teeth
• 12 replaceable teeth with rock guards extend wear life and reduce downtime
• A572 Grade 50 steel construction built for extreme durability in real conditions
• Rubber chip guard design helps control debris and reduce blowback

Low speed, high torque cutting power

Designed to deliver torque instead of relying on speed, allowing the grinder to stay engaged and keep cutting through tough stumps.

Grinds stumps others can’t

The direct drive system and torque output allow this unit to handle hardwood and large stumps that stop typical grinders.

Industry-leading components

Built with a Leonardi wheel and SAI motor, combining top-tier cutting performance with proven hydraulic power.

Minimal maintenance design

The oil bath enclosed hub eliminates belts, reduces wear points, and cuts down on maintenance.

• Stump removal and land clearing
• Property and lot cleanup
• Tree service contractors
• Fence line and right-of-way clearing
• Construction site prep

• Available Models: 27" and 31" cutting wheels
• Hydraulic Flow Required:
• 27" model: 18–30 GPM
• 31" model: 30–45 GPM
• Cutting Depth:
• Up to 18" below ground (27")
• Up to 20" below ground (31")
• Drive System: Direct drive hub system (no belts or gearboxes)
• Motor Type: High-torque radial piston motor
• Wheel Speed:~450–735 RPM depending on model
• Number of Teeth: 12 replaceable cutter teeth
• Construction: A572 Grade 50 high-strength steel
• Weight:~1,050–1,075 lbs
• Dimensions: Approx. 46" width, 41" length, 25" height

Designed to work with most skid steers using the universal quick attach system.

• Fits major brands including Bobcat, Kubota, CAT, John Deere, Case, New Holland, Gehl, Mustang, ASV, and more
• Compatible with both standard-flow and high-flow machines (see specs for requirements)

Popular Compatible Machines

Commonly used with models like:

Bobcat T770, T76, S650, S770

Kubota SVL75, SVL97, SVL97-2

CAT 259D3, 289D3, 299D3

John Deere 317G, 325G, 331G

Case TR270, TR310, SV280

New Holland C332, L328

Not sure if it will fit your machine? Give us a call - we’ll make sure you get the right setup.

Will this stump grinder work on my skid steer?

The Eterra Vortex is designed for most skid steers with a universal quick attach and 18 to 45 GPM hydraulic flow.

It runs on both standard flow and high flow machines, but high flow will deliver faster grinding and better performance on larger stumps.

Not sure? Give us a call and we will confirm fitment before you buy.

What makes the Vortex better than other stump grinders?

The Vortex uses a direct drive radial piston motor, which means more torque and fewer wear parts compared to belt-driven grinders.

• No belts or gearboxes to maintain
• More usable power at lower speeds
• Built for tougher stumps other grinders struggle with

It is designed for power, reliability, and long-term durability, not just high RPM.

How deep and how big of a stump can it handle?

The Vortex can grind up to 18 to 20 inches below ground, allowing for full stump removal.

It is built to handle both softwood and hardwood stumps, making it a strong option for property owners, contractors, and land clearing work.

Eterra Attachments are backed by a limited manufacturer warranty covering defects in materials and workmanship for the original purchaser.

• Structural components and hydraulic cylinders are typically covered for 1 year under normal use
• Gearboxes and drive components are covered, with wear items (such as seals) considered maintenance after the initial period
• Warranty applies to properly operated and maintained equipment within recommended hydraulic and usage specifications

This warranty does not cover damage caused by misuse, improper installation, normal wear and tear, or operation outside of rated capacities.

All warranty claims are handled through Echo Equipment, where you’ll work directly with our team to get issues resolved quickly without the runaround.