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Trouble Shooting Diamond Blades

Sometimes when you are cutting, you will find things that might not be going the way you would expect them to. Concrete cutting can be difficult for beginners and when cuts arn't going smoothly it can be frustrating

Please use our information below to guide you in finding remedies to prevent damaging your diamond blades.


Caused by lack of water to cool down the surface of the cut.
Corrected by increasing the flow of water and referring to your operating instructions

Blade is not cutting

Caused by one of three things.  the blade being to hard for the material being cut. It could be that the material is too hard. Lastly, it could be you do not have enough power from your machine to effectively cut the surface.
Corrected by using a blade with a softer bond, dressing or sharpening the blade with a soft concrete block or old abrasive wheel, check to make sure to tighten belts on equipment.

Segment snapped off

Caused by material perhaps not being secured properly causing it to shift while cutting. It could be caused by over heating due to a lack of water or if you start undercutting. Undercutting is when you cut to deep past the surface of the concrete or aggregate.
Corrective action would be to ensure the material is held in place firmly. Make sure you are providing enough water. Lastly, if you are cutting abrasive material, switch to a wear-resistant cores.

Worn out-of around

Cause by a worn-out shaft causing the blade to spin uneven. It could be due to the blade arbor hole being damaged or the engine not properly tuned which can cause a phenomenon known as “hunting.”
Corrected by making sure your equipment is not damaged by ensuring your engine has been tuned, your arbor hole is intact and by installing new bearings.  


Occurs when the steel core is wearing out before the segment.
Corrective action is that the blade core needs to be equipped with undercut.

Loss of tension

Caused by using a misaligned saw, cutting excessively hard material, the material not being held down, using mismatched blade collars, blade spinning at an incorrect RPM.
Correct by checking for proper alignment of your saw, using the correct bond spec, maintaining a firm grip on material cutting, and checking proper RPM.

Arbor is no longer round

Caused by the blade collar not being properly tightened causing a rotation. Worn or dirty collars can also cause this.
Correct by cleaning and tightening collars.

Steel Core Cracks

Blade might be way to hard for material being cut. You could be cutting with to much force causing pressure to the blade. Lastly, your water supply could be lacking causing to extreme over heating.
To correct, Change you blade, use steady pressure while cutting, and increasing your flow of water.

Segment Cracks

Caused by the blade being too hard for the material being cut.
Correct by changing your blade to one with a softer bond.

Uneven side wear

Caused by not using enough water or your equipment is malfunctioning.
Correct by increasing your water supply and make sure to replace bearings or worn arbor shafts.


Still not sure what is wrong with your blade? Contact one of our experts today. Our experts can help walk you through trouble shooting and can help provide advise on operating procedures and equipment.

Not sure if concrete cutting is for you? Our parent company, CanWest Concrete Cutting & Coring can help provide cutting services. Contact our team to get a free quote today.

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*Please note, these are just suggestions and CanWest Diamond products is not responsible for the actions of the equipment users. We offer this information in good faith. At anytime if you are not sure of how to operate your equipment, please power down, and call our team and speak with an experienced operator. 

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