Telescopic Pin-in-Pin Mechanisms: Inner and Outer Shear Line Kinematics
Engineering Overview: Engineering analysis of telescopic pin-in-pin tumbler arrays, requiring simultaneous alignment of concentric inner and outer shear lines.
Technical & Engineering Specifications
| Standard | EN 1303 Grade 6 / VdS High Security |
|---|---|
| Total Pins | 10 to 14 Active Concentric Pins |
| Architecture | Telescopic Coaxial Pin-in-Pin System |
| Diff Permutations | > 10,000,000 Certified Combinations |
| Chamber Multiplier | 2 Independent Shear Lines per Chamber |
Dual Concentric Shear Lines
Telescopic Pin-in-Pin Technology represents the pinnacle of mechanical key security. Each pin chamber houses two coaxial pins: an outer hollow pin and an inner solid center pin.
Simultaneous Dual Alignment
- To open the lock, the key dimple cuts must lift both the outer sleeve pin AND the inner core pin simultaneously to their respective shear lines.
- Picking a telescopic chamber requires picking two independent shear lines per chamber (10–14 shear lines total in a 5-chamber core), multiplying pick resistance exponentially.
Frequently Asked Engineering & Selection Questions
Q1: What is a telescopic pin-in-pin lock?
A lock where each pin chamber contains an outer sleeve pin and an inner center pin that must both be aligned simultaneously to turn the core.