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Do You Need High Flow to Run a Skid Steer Brush Cutter?

February 8, 2023, 11:02 am · Updated May 28, 2026, 12:00 am by Ben from Skidsteers.com.

blue-diamond-attachments-extreme-duty-closed-front-brush-cutter

Table of Contents:

  1. TL;DR
  2. What Is a High-Flow Skid Steer?
  3. Trencher Attachments
  4. Drum Mulchers
  5. Brush Cutters
  6. Power Rakes
  7. Augers
  8. Concrete Planers
  9. Snow Blowers
  10. The Cost of a High-Flow Hydraulic System
  11. Frequently Asked Questions

TL;DR

  • Hydraulic flow rate is measured in gallons per minute (GPM), distinguishing standard flow machinery (16 to 26 GPM) from high-flow systems (27 to 45 GPM).
  • Proper alignment between a skid steer's flow rate and its attachment's specifications is necessary to avoid performance failure or mechanical damage to the hydraulic pump.
  • Heavy-duty tools such as drum mulchers, concrete planers, trenchers, and stump grinders require the higher horsepower and torque provided by high-flow configurations.
  • Although high-flow equipment carries a higher initial purchase price, the investment optimizes job-site efficiency, reduces task completion times, and ensures operational durability.

The technicalities of skid steers and their attachments sometimes can cause problems for many. However,understanding how your machine works is crucialnot only when it to comes its operation but also costs, maintenance, and most importantly - safety. Today, we would like to talk a bit more about high-flow skid steers and how important it is to choose a compatible high-flow attachment. Without further ado, here isthe why and the how of skid steers' hydraulic flow.

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What Is a High-Flow Skid Steer?

Hydraulic flow isthe movement of hydraulic fluid in the system of a machine. The measure of that movement within a certain time is called a flow rate and is expressed in gallons per minute (GPM). We therefore can come acrossmachines with standard flow rates and high flow ratesoperating at different ranges:

- standard flow skid steer: 16- 26 GPM

- high flow skid steer: 27- 45 GPM

High-flow hydraulics is responsible fora greater horsepower from your skid steer pump. Greater power is needed to perform some heavy-duty jobs such as grinding, tree mulching, or asphalt grinding (cold planing). Horsepower also measures how much your skid steer can do in a set timeframe. How does that correspond to skid steer attachments?Skid steer attachments, for example, brush cutters are designed to work on certain hydraulic flows.

The key iscompatibility. If the application requires more power and therefore a high-flow skid steer, you should not choose an attachment that pairs with a standard flow skid steer.

What will happen if you choose to run a low flow attachment on a high flow skid steer or the opposite? When a high-flow attachment receives a lower flow than is required, it will beless efficient or not work at all. It may evenresult in damageto the skid steer hydraulics or an attachment itself.

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Knowing the basics, we can now present a fewhigh-flow skid steer attachmentsthat will work perfectly with a high-flow system:

Swing Arm Stump Grinders

In this case, two parts need a high horsepower to operate properly. The stump grinder'sflywheelneeds to cut through the stump as well as theswing arm must stay functional.

Trencher Attachments

Any high-flow machine will be compatible with trenchers. If you need to cut through a rocky surface, it is best tosave time by trying a high flow trencher. Increased speed is one thing, but more importantly, high flow capabilities assure more torque andno breaks in the executiondue to machine stalling.

Drum Mulchers

Working against the resistance of trees and debris sounds like a job involving a lot of horsepower. Drum mulchers and disc mulchers arebest equipped to tackleit if they work at in high flow, especially when you plan to slice down trees and mulch them up.

Brush Cutters

Cutting through thick undergrowth is a perfect job fora machine with greater hydraulic power. Pay attention to the type of motor as well to avoid damaging any parts of your equipment.

Power Rakes

A question we often come across is: will a power rake attachment work using standard flow? Yes, they will providing your machine has a strong pump and runs at a minimum of 16 GPM. Will ittake longer to finish the job? Yes, especially when working in dry hard ground conditions. Most power rakes can run up to 40-45 GPM at 4000 PSI giving you the ultimate performance to refresh gravel driveways or to prepare a lot for seeding.

Augers

More torque is the key toefficient work of with augers,especially when the ground you need to work in ishard and rocky. Power generated by high-flow machines isbeneficial in boosting efficiencybut also guarantees more safety. The attachment that has more power is less likely to fail due to twisting during work.

Concrete Planers

With this type of work, it is not only advisable to use a high-flow attachment, but it isthe only option. Concrete is an example of a very hard surface andonly high-flow hydraulics will suffice.

Snow Blowers

Snow removal can be done in standard flow conditions will result in efficient operation (providing you match attachment and skid steer hydraulic flow). However, if you need toblow snow further, high-flow systems will be your best option.

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The Cost of a High-Flow Hydraulic System

Cost is always an important factor influencing any machine purchase. Not going to lie, high-flow skid steers as well as matching attachments are usually more expensive. However, considering other factors, the money you save by not having the high flow option, most likely wont save you money in the long term.

First, if you use standard flow attachments in more demanding and harder terrain,you may risk damaging your attachment or machine. You may even put your own safety at risk trying to use a lessor attachment in an application that needs more power. In this case, breaking an attachment not suitable for the job, or taking more risk as an operator will not be cost effective.

Secondly,the flow (GPM) influences attachment's productivity. Even if you do not damage your lesser attachment performing harder tasks, you will spend a lot more time completing the same job. A wise man once said: time is money. By spending more time performing certain jobs you are not moving on to other duties that may generate more income. So, to some extent, you are spending more money on standard flow machines.

Finally,high-flow equipment will last you years and keep you safe.

Have a browse through our shop to find thebest-priced high-flow skid steer attachments well-tailored to fit your needs.

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Frequently Asked Questions

What is the difference between a standard flow and a high-flow skid steer?

The main difference is the hydraulic flow rate, measured in gallons per minute (GPM). A standard flow skid steer typically operates between 16-26 GPM, while a high-flow system operates at a much higher rate, usually between 27-45 GPM. This higher flow rate provides more hydraulic horsepower for demanding attachments.

Why is it important to match an attachment to the skid steer's flow rate?

Compatibility is key for performance and safety. Using a high-flow attachment on a standard flow machine will result in poor performance or cause the attachment not to work at all. Conversely, running a standard flow attachment on a high-flow machine can damage the attachment or the skid steer's hydraulic system.

Which attachments typically require a high-flow skid steer?

Attachments that perform heavy-duty tasks like grinding, mulching, and cutting hard materials require high-flow hydraulics. Common examples include drum mulchers, stump grinders, concrete planers, trenchers (for rocky soil), and large snow blowers.