How Deep Can a 114mm Saw Blade Cut Concrete?

In construction and renovation projects, the 114mm diamond saw blade is one of the most commonly used cutting tools. A frequent question from users is: how deep can a 114mm blade actually cut? This article gives you a clear answer based on real-world data.

Standard Cutting Depth of a 114mm Blade

The “114 blade” typically refers to a diamond cutting disc with an outer diameter of 114mm. The effective cutting depth depends on the blade diameter and machine setup.

In practice, a 114mm blade mounted on a handheld angle grinder has an effective cutting depth of approximately 25mm to 35mm. This varies based on:

• Mounting method: The usable cutting edge differs between handheld and bench-mounted setups
• Guard depth: Some machine guards reduce the plunge depth
• Blade wear: As the blade wears, the outer diameter shrinks, reducing cutting depth

Performance When Cutting Concrete

Concrete is one of the most common materials cut with a 114mm blade. Based on field data from Huada Ginkgo:

• Standard concrete (C20-C30): Can cut approximately 30mm, with high single-pass efficiency
• High-strength concrete (C40+): Slightly reduced depth; multiple passes recommended
• Reinforced concrete: Speed drops significantly when hitting rebar; consider a specialized blade

Important: Cutting deeper than 25mm in a single pass increases heat stress on the blade, which can cause warping or segment loss. It’s advisable to score shallow first, then increase depth progressively.

How to Maximize Cutting Depth

1. Match the RPM: 114mm blades typically work best at 8,000–12,000 RPM
2. Use wet cutting: Water cooling keeps blade temperature down, allowing deeper cuts
3. Replace worn blades: A blade worn to 70% of its original diameter loses significant cutting depth
4. Choose the right bond hardness: Soft bond for hard concrete gives more stable cutting depth

Cutting Depth Comparison by Blade Size

• 100mm blade: approx. 20–25mm effective depth
• 114mm blade: approx. 25–35mm effective depth
• 125mm blade: approx. 30–38mm effective depth
• 150mm blade: approx. 40–50mm effective depth

Conclusion

A 114mm diamond blade can cut concrete to an effective depth of 25mm to 35mm, depending on your machine, concrete grade, and technique. For deeper cuts, consider upgrading to a 125mm or 150mm blade, or using a multi-pass approach.

Huada Ginkgo manufactures diamond saw blades in all standard sizes with OEM and custom options available. Contact us for bulk orders or technical consultation.