Description
“The 22mm Fast Hole Saw Cutter is a game-changer for industrial fabrication. While traditional bi-metal saws often ‘burn out’ when hitting 2mm+ stainless steel, our Carbide-tipped system maintains a razor-sharp edge even at higher temperatures.
The triple-layer tooth geometry ensures balanced cutting, reducing vibration and protecting your drill’s motor. This tool is specifically designed for ‘dry cutting’ sheet metal, switchboards, and thick-walled pipes. With its high-speed performance, you can complete a perfect 22mm hole in under 10 seconds, leaving a clean, burr-free finish that is ready for immediate assembly.”
TCT vs. Bi-Metal: The 2025 Efficiency Gap
In 2025, modern building materials have become tougher and more corrosion-resistant. Standard Bi-Metal saws, while flexible, tend to dull quickly on modern 304/316 stainless steel. TCT (Tungsten Carbide Tipped) cutters are the modern solution; they offer a ‘fast-start’ capability that requires zero pre-drilling and delivers a mirror-finish hole every time.
Sustainability & Tool Life
Hole saw cutters are inherently more sustainable. By cutting only the perimeter of the hole, they use roughly 40% less energy than solid drill bits. For the modern cordless-heavy job site, this means your battery lasts longer, and your drill runs cooler, significantly extending the life of your expensive power tool inventory.
 Comparison & Selection Charts
Performance Comparison: 22mm Hole Saw Types
| Feature | TCT (Fast Cutter) | Bi-Metal (M3/M42) | Step Drill Bit |
| Best Material | Stainless, Cast Iron, Alloy | Mild Steel, Wood, PVC | Thin Sheet Metal ($<2\text{mm}$) |
| Cutting Speed | Ultra-Fast | Moderate | Fast |
| Hole Quality | Precision / Burr-Free | Moderate | Clean (Thin materials only) |
| Max Depth | 25mm+ | 38mm+ | Fixed by steps |
| Tool Life | Highest (500+ holes) | Moderate | Low (Requires sharpening) |
RPM Chart for 22mm Cutter (Safe Operating Speeds)
Using the correct RPM is essential to prevent carbide chipping.
| Material | Recommended RPM | Coolant / Lubricant |
| Stainless Steel | 350 – 550 RPM | Required (Cutting Oil) |
| Mild Steel | 600 – 900 RPM | Recommended (Water/Oil) |
| Cast Iron | 400 – 600 RPM | Dry (No Coolant) |
| Aluminum | 1200 – 1500 RPM | Not Required |
| Hardwood / PVC | 1500 – 2000 RPM | Not Required |
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