|
|
| Brand Name: | XRTOOLS |
| Model Number: | 44 |
| MOQ: | 500PCS |
| Price: | $0.35-22/PCS |
| Delivery Time: | 30-35 days |
| Payment Terms: | L/C, T/T, D/P, Western Union, MoneyGram |
Our 44mm M42 Cobalt Bi-Metal Hole Saw is engineered for the professional who demands zero compromise. This 1-3/4" cutter is the global standard for installing commercial door hardware and heavy-duty electrical conduit.
By utilizing a certified 8% Cobalt edge fused to a high-strength alloy body, we have solved the common problem of "tooth-burn" when cutting through hard metal. Whether you are boring into a solid oak door or a 304 stainless steel control panel, the M42 metallurgy ensures a faster cut and a lifespan that is 3x longer than standard M3 bi-metal saws.
| Feature | Technical Specification | Operational Benefit |
| Material Science | HSS M42 (8% Cobalt) | High Red-Hardness: Maintains cutting edge at temperatures up to 1200°F. |
| Teeth Geometry | 4/6 TPI Variable Pitch | Harmonic Suppression: Eliminates chatter for a perfectly round 44mm hole. |
| Welding Integrity | Electron-Beam Fusion | Zero Stripping: Teeth stay attached even when hitting high-tensile metal studs. |
| Base Design | Reinforced 1/4" Base Plate | Torque Management: Prevents the arbor holes from deforming under heavy load. |
| Coating | Teflon-Grade Anti-Friction | Chip Management: Prevents dust and metal shavings from clogging the teeth. |
Red-Hardness Technology: As the diameter increases to 44mm, the peripheral speed of the teeth generates significant friction. Standard steel softens and "rolls" its edge. Our M42 Cobalt teeth are heat-treated to HRC 66-68, allowing them to "eat" through metal without annealing.
Non-Linear Variable Pitch: Traditional fixed-pitch saws often bounce, creating a "scalloped" edge. Our 4/6 TPI Variable design uses alternating gullet depths to break the vibration cycle. This is critical for 44mm door lock installations where a clean, burr-free finish is required for the hardware plates.
Dual-Action Ejection Slots: The oversized side windows are designed for more than just cooling. They are angled to allow a screwdriver to be used as a lever to pop out the "plug" (core) in seconds, drastically reducing downtime during multi-hole projects.
Locksmithing & Carpentry: The industry standard for drilling the 1-3/4" (44mm) main hole for residential and commercial door locks.
Electrical MRO: Creating entry points for 1-1/4" conduit fittings in industrial steel enclosures.
Plumbing: Precision paths for 1-1/2" PVC and copper drainage pipes.
Metalworking: Drilling through stainless steel sheets, aluminum frames, and thick mild steel plates.
Q: Why is 44mm better than 45mm for door locks?
A: 44mm (1-3/4") is the precise engineering standard for most global door hardware. Using a 45mm saw can leave too much play, causing the lockset to wobble over time. Our saw ensures a "glove-like" fit.
Q: What speed is recommended for 44mm in Stainless Steel?
A: For M42 material on stainless, we recommend a very slow speed: 45 - 55 RPM. Always use cutting oil. For wood, you can increase the speed to 180 - 220 RPM.
Q: Can this handle metal studs behind drywall?
A: Yes. The M42 cobalt teeth are designed to cut through metal studs, nails, and screws without stripping, making it the perfect "hidden obstacle" tool for contractors.
Video
Video
