June 17, 2025
Introduction
A concrete chainsaw offers unique capabilities, enabling cuts in reinforced concrete that are not possible with traditional cutting methods. It allows for clean, square corners without overcuts, very small cutouts—as narrow as the guide bar itself—and, with patience and skill, even curved cuts. Thanks to its specialized design, it can make near-flush cuts and achieve deep cutting depths from one side. Depths depend on the guide bar used. Unlike wood-type chainsaws, which are very prone to kicking back, concrete chainsaws can plunge straight into the material with the nose of the guide bar with very little chance of kickback. This allows precise control of the cutting line.
When faced with a complex concrete cutting challenge, a chainsaw often proves to be the ideal solution.
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Limitations and Cost Considerations
The main drawback of using a diamond chainsaw is the high cost of consumables, especially the diamond chains themselves. Since oil lubrication cannot be used for the chains on these tools, water serves as the only lubricant. This accelerates the wear of critical components like the drive links, guide bars, and sprockets.
Typically, a guide bar and sprocket will last through about three chains before needing replacement. Because of these costs, operators usually reserve chainsaws for tasks that other saws cannot perform, for example, making precise corner cuts before completing the rest with a hand saw.
It's also important to ensure that the precut kerf is wide enough for the chainsaw, as the saw can become stuck if it enters a narrower groove. Alternatively, the chainsaw can be used first to avoid this issue.
Power Source Options
Concrete chainsaws are available with various power sources: hydraulic, gas (petrol) engines, electric motors, and even pneumatic systems.
- Hydraulic: Ideal for underwater cutting but requires bulky hoses and a heavy, costly power pack.
- Gas: A good option for outdoor work where no power supply is available. However, it produces exhaust fumes and is unsuitable for indoor use (where most cutting is required).
- Electric: Often the best choice overall: Being clean, convenient, and safe for indoor use. Most job sites have access to electricity via the grid or a generator, making electric saws highly versatile. All of AGP’s chainsaws are electric.
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Performance and Recommendations
The main concern with electric chainsaws is meeting their power demands. Due to the high-friction inherent to the chain and guide bar interface, additional power is needed to overcome these frictional losses. As such:
- Single-phase universal motor saws (e.g., the CS11 with 2.1 kW, 2.8 HP output) are best paired with shorter guide bars (around 12 inches or less). The limited power is offset by the convenience of using single phase supply, which is available anywhere.
- High-frequency three-phase saws (e.g., the HCS19 with a PMSM motor) can deliver up to 5.9 kW (7.9 HP) of output power, enabling bars up to 20 inches long to be used. These systems are optimal for demanding, professional applications, but do require 3 phase supply.
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Special Features of AGP Chainsaws
AGP chainsaws have some outstanding features which make concrete cutting easier and more accurate.
- Dual plane spirit levels for precise alignment for both horizontal and vertical cuts.
- Bumper Spike for improved leverage during cutting.
- Waterproof Hall Effect Switch for resistance to water and slurry.
- Tool Free Chain Tension Adjustment saves time and effort as these tools require frequent adjustment. (HCS19)
- Flush Cutting Capability for cutting into corners or along floors. (HCS19)
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Conclusion
With their ability to deliver precision, depth, and versatility in difficult cutting scenarios, electric concrete chainsaws like the CS11 and HCS19 have become indispensable tools for concrete cutting professionals. When used appropriately, they save time, enhance safety, and allow cuts that would otherwise be impossible.