Old stumps look ugly, create trip hazards, and harbor pests or disease. But you can’t just dig them out by hand. That’s why a PTO stump grinder is a smart investment. It attaches to your tractor and powers a high-speed, carbide-tooth flywheel to reduce a stump to chips in minutes.

At Top Tier Attachments, we have a wide range of stump grinders for tractors, all from trusted brands like Baumalight. These stump grinders are built from heavy-gauge steel, sealed bearings, and hardened, replaceable carbide teeth. Every model mounts to a Category I/II three-point hitch and fits standard 540 RPM PTO shafts. So, you don’t need a custom driveline. 

The S18’s 18” flywheel grinds stumps up to 12” in diameter on tractors as small as 25 HP, while the 40” flywheel on the S40 tackles massive 30” stumps with a 75 HP+ tractor.  Each grinder ships from US warehouses and is backed by a one-year structural warranty.

Our in-house experts verify your tractor’s PTO output and hitch category before you buy so you never have to stress about choosing the right PTO stump grinder, either. Take the next step today towards streamlined stump removal - no backfill, no hassle!

What to Look For in Your Stump Grinder for Tractor 

Part of what has made Top Tier Attachments the trusted choice is our dedicated customer service department. We’re always on standby to answer questions and offer tailored recommendations based on your tractor and landscape. Here’s what you need to consider:

PTO Horsepower Requirements

Smaller rotors (around 24”) typically require 35-50 PTO HP, while larger 34” rotors need 75-115 PTO HP. Undersizing leads to bogging and slow cuts, but oversizing wastes engine capacity. Match the rotor diameter to your PTO output to maintain optimal RPM under load.

Rotor Diameter and Cutting Capacity

Rotor size directly dictates maximum stump diameter. A 24” rotor suits most residential and light‐commercial jobs (up to 18”-20” stumps). A 34” rotor offers the torque necessary for 24”-30” stumps if you routinely tackle thicker trunks or hardwoods. 

Three-Point Hitch Compatibility

The grinder’s mounting bracket must fit your tractor’s hitch category (Cat I or Cat II). A universal bracket simplifies installation across various models, but always confirm top-link geometry to keep the rotor level during operation.

Driveline Protection

Look for a slip-clutch or shear-bolt driveline that disengages if the rotor binds. This prevents gearbox damage when you hit hidden roots or rocks. A properly sized driveline avoids premature wear, too.

Construction and Maintenance Features

Heavy-gauge steel housing resists flex and protects internal components. Sealed bearings and accessible grease fittings minimize downtime in dusty conditions. Replaceable carbide teeth make field maintenance fast and affordable.

Our team is here to help you navigate all of this. We’re not just your trusted choice for a stump grinder for tractor, either. From skid steer stump grinders to excavator stump grinders, we carry attachments for any machine. Elevate your stump removal process today.

Frequently Asked Questions

How Much is it to Rent a Stump Grinder for a Day?

You can typically expect to pay anywhere from $250-$400 per day for a PTO stump grinder, but this will obviously vary based on local rates and the specific model you rent. Buying a stump grinder for tractor tends to make more sense if you use it frequently enough.

Is it Worth Buying a Stump Grinder for Tractor?

This investment will pay for itself pretty quickly if you grind more than 5-10 stumps a year or frequently contract landscaping jobs. A tractor-mounted grinder effortlessly handles stumps 8-20” in diameter, while manual removal methods can take hours each.

How Far Down Should You Grind a Stump?

Most of the time you should grind 2-3” below ground level to prevent regrowth and allow for smooth final grading. Property regrading or sod installation may require grinding 4-6” deep to remove major root mass.

How Long Does it Take to Grind a 24-inch Stump?

Expect 5-7 minutes if you’re using a properly matched tractor (45-75 HP) with an 18” or 20” flywheel. This is under normal wood density, though. Hardwoods like oak or maple may push closer to 8-10 minutes as you maintain forward feed and full PTO RPM.

How Do I Determine What Size PTO Stump Grinder I Need?

Simple - just match the grinder to your tractor’s PTO horsepower:

• 16” Flywheel: Ideal for tractors 25-40 HP, handling stumps up to 14”.
• 18” Flywheel: Suited for tractors 40-60 HP, grinds stumps up to 18”.
• 20” Flywheel: Requires 60-75 HP tractors to tackle 20”+ stumps efficiently.

You also need to confirm your hitch category (I vs II) and ensure the driveline fits a 540 RPM PTO shaft. When in doubt, contact our sales engineers with your tractor’s make/model, PTO specs, and typical stump sizes. We take the guesswork out of attachments!