What Is A Brushless Lawn Mower? Is It Better Than Brushed Mowers?

What Is A Brushless Lawn Mower

Over the years, the DC motor has become the ideal choice for many applications where it’s needed. This is because a DC or brushless motor provides distinct features such as reliability, low maintenance, less noise, speed control, and is surprisingly low cost. As we can assume already by its name, a brushless lawn mower is a type of electric mower with no brushes. Brushes are the sliding devices that allow the electricity to flow into the copper coil of the engine. 

Electric motors are the backbone of modern automation. Motors convert electrical energy into mechanical energy, and the resulting motion and torque drive a load. In order to make mowing more reliable, efficient, and less noisy, the recent trend has been to use a brushless mower. These mowers are comparatively lighter compared to the brushed mowers but have the same power output. Brushes in the conventional gas lawn mowers wear out over time and may cause sparking. Thus, the brushed lawnmower should never be used for operations that demand long life and reliability.

Let’s dig into the article and learn “what is a brushless lawnmower”. This article will guide you through the key differences between a brushed and brushless lawn mower and eventually help you choose the better option.

Our Top Picks

9.7
Greenworks Cordless Brushless Lawn Mower
Greenworks Cordless Brushless Lawn Mower
  • 40 Volt 21 Inch
  • Upto 60 minute runtime with full charge
  • 7 Position Height Adjustment
  • 3 Year Limited Tool Warranty
9.6
Makita Brushless Lawn Mower
Makita Brushless Lawn Mower
  • 36 Volt 18 Inch
  • Cuts over 1/2 acre in 53 minutes
  • Brushless motor delivers up to 3,300 RPM
  • 3 Year Limited Tool Warranty
9.5
Litheli Cordless Brushless Lawn Mower
Litheli Cordless Brushless Lawn Mower
  • 40 Volt 17 Inch
  • Upto 40 minutes runtime at a full charge
  • Brushless motor delivers up to 3700 rpm
  • 5 Year Limited Tool Warranty

How Does A Brushless Lawn Mower Work?

A brushless lawn mower is suitable for environments where sparks are dangerous. There are no brushes and collectors present in a brushless lawnmower. Similarly, the magnet and windings are reversed because the mower generates less heat but delivers better performance. This type of mower comes with permanent magnets and electromagnets excited by windings and coils.

In a brushless lawn mower, there are no such sliding elements on the collector, which completely solves the problem of maintenance and eliminates the replacement of brushes and other electrical components. A brushless lawn mower is nothing but something powered by a brushless mower that automatically adjusts to the power the mower needs for the task. Since there is no heat application, these brushless lawnmowers generate comparatively less heat while delivering outstanding performance through the application of magnets. 

Advantages and Disadvantages of a Brushless Lawn Mower

Advantages And Disadvantages Of A Brushless Lawn Mower

Now that you know the answer to “what is a brushless lawnmower”, let us look at the advantages ad disadvantages of a brushless lawn mower. 

1. Advantages 

  • Mowers powered by a brushless DC motor have a longer lifespan as there are no brushes present to wear out. 
  • Have a mechanically simple design than a brushed motor as it eliminates the complication of transferring power from outside the engine to the spinning rotor
  • There is less maintenance required as there are no brushes to replace
  • Brushless mowers are more efficient than brushed mowers, typically featuring 85-90% efficiency 
  • More efficiency ultimately means more of the total power being used by the motor being converted into rotational force  rather than being lost as heat
  • There is less heat generation, and they are entirely eco-friendly and noise-free because of the absence of brushes
  • The brushless motor has batteries designed in a manner such that they immediately adapt to the power required for the task ( slower for thin grass and faster for thick)
  • With suitable batteries, a brushless mower can mow large yards to an acre at a rapid rate without overheating or producing excessive friction between the stator and the rotor. 
  • Despite there being no brushes, a brushless mower provides you with extensive power and a long-lasting alternative. 

2. Disadvantages

  • Brushless mowers carry a higher initial cost since they require a commutating device (encoder) and a drive/controller.
  • As compared to a brushed motor, a brushless motor has complicated wiring and cannot be connected directly to DC power.  That’s because of the crisis of power control and its link to all the electromagnets.
  • More prone to vibrations when operated at lesser speeds
  • Complicated motor speed controllers

If you are interested in these electrical lawnmowers, have a look at the Husqvarna 450 X, Greenworks 25022 or the Ryobi lawnmowers.

Brushless vs Brushed Mowers

Brushless Vs Brushed Mowers

As we have mentioned above, a brushed motor consists of a commutator, permanent magnet, wound armature, and brushes. A brushless mower guarantees an efficiency of almost 80%, whereas a brushed motor is built around 70-75%. More efficiency ultimately means a higher conversion rate of fuel power being turned into rotational energy. 

One of the key differences between a brushed and brushless mower is that brushless mowers use magnets to generate power instead of carbon, thus making it noise-free and eco-friendly. With the suitable batteries, a brushless mower can mow large yards to an acre at a fast rate without overheating or producing excessive friction between the stator and the rotor. 

A brushless mower requires comparatively less maintenance compared to a brushed mower. Brushless tools are better adapted, and there is no need to replace worn brushes. Brushless mowers have a higher heat dissipation ratio, which completely eliminates the problem of overheating. 

Brushed mowers have a simple design and wiring, making them easier to fix in case of energy. Unfortunately, a brushless mower has a complicated wiring system, and it cannot be connected directly to DC power. 

Brushed MowersBrushless Mowers
Easier To RepairDifficult to Repair
InexpensiveExpensive
OverheatingNoise-free
High maintenanceEco-friendly
Smart motor technology

The Bottom Line 

We hope our article was able to gain a deeper insight and help understand the difference between a brushed and brushless lawnmower. Brushless lawnmowers guarantee efficiency and are easy and comfortable to use. If you have a small yard/lawn, then you will benefit significantly if you go with a brushless lawnmower. Its battery is excellent for expert gardeners or for those who have tiny spaces to mow. If you need a reliable tool that generates more power and has a longer life, then this type might be for you.

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2 Comments

  1. Very nice article writing style.
    I’m also a writer, but your writing style is so well more than mine. I’m also writing an article on this topic but your one is perfect.

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