LL7 Self-Closing Hinge | LEECO
LL7B friction hinge
APPLICATIONS:
-- Small Display panels, handheld device, small box lid, door lid, industrial enclosures, office equipment…
TORQUE RATINGS:
-- Symmetric: 0.4 - 0.9Nm
-- Static torque could be specified at every 0.1 Nm (About 0.9 lb-in) interval within range given above
CYCLE LIFE:
-- Over 25,000 cycle life within ±20% of static torque specification
MATERIALS:
-- Steel and grease
DESIGN TOOLS :
- Self locking feature
- 360 degree shaft rotation
- Plating finish
- M3.0 or #4 screw mounting hole
- Zero backlash
- Minimal or no springback
- RoHS compliant
- REACH compliant
- Customized torque is available
- Partial design customization on this friction torque hinge is also available
Q：How does a self-closing hinge work?
A：The hinge stores torque internally and automatically returns the lid or cover to the closed position without external power
Q：Is the torque adjustable?
A：Yes. Standard models support preset torque ranges, and custom torque values can be specified to match lid weight and usage frequency.
Q：Is it suitable for fire-rated lids?
A：Yes. The design provides consistent closing to ensure the lid remains securely shut. Please verify local code requirements and use compatible fire-rated hardware.
Q：What lid thickness and weight are supported?
A：Refer to the specification table for recommended lid thickness and routing depth. For heavy-duty or non-standard lid configurations, please contact us for customization options.
Q：Can I customize finish or hole patterns?
A：Yes. We offer partial design customization including finishes, mounting holes, and torque curves for OEM/ODM projects.