Free-Spinning Sintered Carbide Rollers in Plug Noses Against Hole Saws
Engineering Overview: Technical analysis of free-spinning tungsten carbide rollers embedded in the front plug nose, neutralizing high-torque carbide hole saws.
Technical & Engineering Specifications
| Defense | Free-Spinning Tungsten Carbide Rollers |
|---|---|
| Hardness | 80 HRC (1600 HV) |
| Standard | EN 1303 Attack Grade D |
| Application | High-Security Commercial Entrances |
Hole Saw Anti-Core Extraction
Burglars use annular carbide hole saws to core out the outer brass plug.
Dynamic Deflection
- Dual Carbide Rollers: Two free-spinning tungsten rollers ($\Phi 3.0\text{ mm}$) spin freely against the hole saw teeth, deflecting cutting edges.
Frequently Asked Engineering & Selection Questions
Q1: What anti-attack mechanism is detailed here?
Technical analysis of free-spinning tungsten carbide rollers embedded in the front plug nose, neutralizing high-torque carbide hole saws.