Tubular Key Cam Cylinders: 7-Pin Radial Axial Tumbler Mechanisms
Engineering Overview: Engineering breakdown of tubular key cam cylinders (Ace locks), detailing axial pin displacement, center notch alignment, and anti-drill center spindles.
Technical & Engineering Specifications
| Standard | UL 437 High Security Cam Lock |
|---|---|
| Center Post | Hardened Steel Anti-Drill Center Spindle |
| Cylinder Type | Radial Tubular Pin Cam Cylinder |
| Housing Diameter | 19 mm Double-D Cutout Standard |
| Pin Configuration | 7-Pin or 8-Pin Circular Array |
Axial Pin Displacement Mechanics
Tubular Key Cylinders (Ace Cylinders) position pin tumblers parallel to the key axis in a circular array ($\Phi 19 ext{ mm}$ standard diameter).
Operating Principles
- Axial Tumblers: 7 or 8 precision pins pushed longitudinally by cuts milled into the rim of a hollow circular key blade.
- Hardened Center Spindle: Sintered 60 HRC steel center post prevents drill bit penetration.
- Applications: Vending machines, casino gaming cabinets, ATM service hatches, and security alarms.
Frequently Asked Engineering & Selection Questions
Q1: What is a tubular key cylinder?
A cylindrical lock that uses a round, hollow key to push pins arranged in a circle along the axis of the cylinder.