Specification
Types
- Type L2: Spring-loaded return, closing, medium spring force
- Type R2: Spring-loaded return, opening, medium spring force
Zinc die casting ZD
plastic coated
black, RAL 9005, textured finish SW
silver, RAL 9006, textured finish SR
Spring guide / Cover cap
Plastic (Polyacetal POM)
temperature resistant up to 80 °C
Torsion spring
Spring steel
Information
GN 437.3 Hinges with a spring-loaded return allow doors to be automatically opened and closed by means of the torsion spring.
The return torque varies with the hinge opening angle. Endurance tests have shown that the torque does not change even after 100,000 opening / closing cycles.
The following table shows the relationship between the opening angle and return torque.
| Return torque MR ± 10% in Nm |
|---|
| 0° | 90° | 180° | 270° |
| 0.25 | 0.5 | 0.75 | 1 |
