Soft Close Lid Struts Pair – 400mm 300N – M6 Threaded Ball Joint with 4x L Mounting Brackets
✓ READY FOR DISPATCH
This 400mm 300N soft-close lid strut pair is designed for controlled lid movement in storage furniture and hinged box lids. Unlike basic lift supports, soft close struts provide smoother closing behaviour while still delivering reliable lift assistance for medium-to-heavy lids.
The system helps stabilise lid movement, preventing sudden drops and reducing long-term stress on hinges and mounting points.
Product Overview
Soft close lid struts are commonly used in storage furniture, toy boxes, tool chests and hinged bench lids where controlled movement and safe operation are required.
The 400mm extended length provides sufficient travel distance for deeper lids, while the 300N force rating supplies strong lifting support when two struts are installed.
Technical Specification
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Force Rating: 300N per strut
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Total Support: 600N per pair
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Extended Length: 400mm
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Stroke Length: 150mm
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Connection Type: M6 Threaded Ball Joint
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Ball Size: 10mm
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Mounting Hardware: 4x Steel L Brackets
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Supply: Pair of gas struts (2 units)
Typical Applications
This configuration is suitable for lids that require controlled movement and consistent lifting force.
- Toy box lids
- Storage chest lids
- Bench seat storage lids
- Tool storage boxes
- Furniture lids with soft-close support
Recommended Lid Size & Weight
Correct force selection is essential for smooth soft-close operation.
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Recommended Lid Depth: 500–800mm
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Typical Lid Weight: 30–54kg (lid panel only)
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Installation: one strut per side
Actual performance may vary depending on hinge location, lid material and mounting geometry.
Threaded Ball Joint Mounting System
The struts use an M6 threaded ball joint end fitting that passes through the bracket hole and is secured using a locking nut.
This mounting method provides:
- strong mechanical fixing
- Reduced flex under load
- stable alignment over time
- secure installation for wood, plastic or metal lids
Installation Guidelines
- Install one strut on each side of the lid
- Mount the upper bracket approximately 20–30% from the hinge
- Place the lower bracket on the inner wall of the box frame
- Ensure the strut remains slightly compressed when the lid is closed
Correct positioning ensures balanced lifting force and smoother lid movement.
Important Force Selection Notes
- If the lid weighs less than 30kg, the struts may push the lid open too strongly.
- If the lid exceeds 54kg, a higher force rating may be required.
- Always measure the lid weight without stored contents.
Included Mounting Hardware
The kit includes four reinforced L mounting brackets designed for secure installation in storage furniture and box frames.
- durable steel construction
- stable 90° mounting support
- ideal for deeper lid structures
- compatible with threaded ball joint installation
Why Choose Soft Close Lid Struts
- prevents sudden lid drops
- improves user safety
- reduces hinge wear
- creates smoother lid movement
Soft close support systems improve both usability and long-term durability of hinged storage lids.
AUTORCE Quality Assurance
- quality tested lift performance
- durable steel construction
- fast UK dispatch
- responsive customer support
Upgrade your lid support system with a reliable soft-close solution designed for consistent performance and safer everyday use.
