Cyclic Durability Testing (EN 1303 Class 6): 100,000 Key Rotations Under Lateral Load
Engineering Overview: Engineering breakdown of laboratory endurance testing under EN 1303:2015 Class 6, subjecting lock cylinders to 100,000 automated cycles with lateral side loads.
Technical & Engineering Specifications
| Cycle Count | 100,000 continuous full 360-degree rotations |
|---|---|
| Grade Rating | Grade 6 (Maximum Durability Tier) |
| Test Standard | EN 1303:2015 Section 4.3 (Durability) |
| Applied Side Load | 15 N lateral pre-load |
| Maximum Operating Torque | < 1.5 N.m after 100k cycles |
Laboratory Testing Protocol (EN 1303 Class 6)
To achieve EN 1303:2015 Durability Grade 6, lock cylinders undergo rigorous automated cyclic endurance testing in accredited test laboratories.
Testing Parameters
- 100,000 Continuous Rotations: An automated test rig rotates the key 360° at 15–20 cycles per minute.
- Lateral Side Load: A continuous 15 N lateral pre-load is applied to simulate warped door conditions.
- Torque Limit: Maximum operational torque must remain $<1.5\text{ N}\cdot\text{m}$ throughout testing, confirming zero pin chamber jamming or spring fatigue.
Frequently Asked Engineering & Selection Questions
Q1: What is the maximum torque allowed after 100,000 test cycles under EN 1303?
The cylinder must operate smoothly with a key turning torque under 1.5 N.m, proving zero internal pin galling or spring fatigue.