Why is My Table Saw Losing Power? – I Found These!

The table saw is my favorite cutting tool. It is really important for higher, rapid, safety-cutting processes. When a table saw is using a long time we can face many problems. Among them, power loss is one of them. There are many reasons for that. I could find all in detail. So let’s see, Why is the table saw losing power?

Generally, table saw lose power when it uses dirty and dull saw blades, loose belts, damaged power cord, worn brushes, and wet workpieces. When you fix this first check, the saw blade condition and then check the power motor and workpiece.

When you observe the reasons for power loss, you should take action for that immediately. Probably you will have to repair or replace the suitable parts. So let’s identify why does a table saw loses power and what is the reason for that?

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01. Dirty Saw Blade or Dull Blade

Dirty Saw Blade
Dull Saw Blade

This is a really common problem. When we use a table saw for many projects, we may not clean regularly. As a result of this, sawdust can adhere to the saw blade tightly. Those will not remove while it is spinning. The additional layer will add additional thickness to the saw blade and as a result of this friction can be increased.

When the friction is increased more power is needed to rotate the blade. As a result of this, table saw performance can slow down when you are cutting the workpiece. Sometimes workpiece surfaces can be burned. Hence keep the clean saw blade.

A dull blade is always with blunt teeth. Blunt teeth will not cut the material sharply. It always scratches hardly with the workpiece. So it will add additional friction due to the dull blade. When you cut the workpiece using a dull blade, you will have to wait more time than a sharp blade. So use the properly sharpened saw blade for the clean cutting purpose.

Read More About – 07 Reasons: Why Does a Table Saw Not Start? – [All Fixed]

02. Lose Belt

The table saw is powered by an electric motor. The electric motor transmits power using a belt to the saw blade. When the heat is increased, belt tension can be reduced, due to this power is not able to provide to the saw blade. When the power is lost blade is not able to cut the workpiece. This happens when there is a higher thickness workpiece.

Sometimes oils, sawdust can spread on the belt surface. Then its friction is reduced. So the belt can slip on its path. This will not provide the rotational power to the saw blade.

When the belt is worn we can hear abnormal noise from the belt. At this time belt can provide the power from the motor to the saw blade. So you must replace the belt.

03. Damaged Power Cord

Tables saws are corded and cordless. Most are the corded power supply. When you use a power cord, you should use the proper length and diameter power cord. Longer power cords drop the voltage and ampere. So you had better know the suitable power cord for your table saw.


When you use 220V, 15A power supply, your power cord should not exceed 25 feet.  Use a shorter or heavy-duty extension cord that can handle the current draw of the table saw so the motor spins at the right speed.

Sometimes inside cable can be damaged. So Sufficient power will not flow to the table saw. If you identify the power cable is heated while the table saw is working, you should replace it with a better one. Because that cable is not enough for a sufficient power supply.

04. Worn Brushes.

New Brushes and Worn Brushes

If you use a DC motor table saw, you can have this problem. DC power motors are two types, brushed and brushless are them. Mostly brushes motors are used because they are cheap. Brushes have touched the commutator for supply the power to the motor using two carbon brushes.

Due to the rotation of the commutator, brushes can be worn due to friction. So you must replace them when the brush distance is 1/4 of its initial length. When the carbon brushes are worn, they are not able to touch the commutator. So electricity will not flow to the motor, and its power will reduce. So if there is a brush in your motor, replace them before they are completely worn.

Readmore About – 08 Simple Tips to Protect Your Table Saw !

05. Wet and Higher Thickness Workpiece

The table saw blade surface is directly in touch with the blade surface. There is friction on these surfaces. So when the surface friction is high, the motor needs to produce high power. So wet wood contains some amount of water. So there is additional friction rather than regular dry wood.

When the workpiece thickness is high, you will need to pause and feed if the saw blade slows down and tries to stop it. So select a suitable thickness workpiece, as the table saw is not tend to stop.

Tom Mackency

Tom Mackency

Hi, I am Tom Mackency. It has been 10 years that I have been working as a professional woodworker since 2013. I am really enjoying my carrier by creating many kinds of projects in my workshop. But mostly I like for home improvement projects. Home improvement and DIY projects are the most interesting things for me. More than that, the coolest things are power tools. Those are very precious and efficient than a decade ago. So I try to introduce so many things about power tools, woodworking, DIY projects, home improvement and many more interesting topics here.