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Gaeilgenah Éireann
A Keensert (also known as Keysert) is a type of threaded insert designed to provide a strong and wear-resistant thread in materials that are soft or prone to thread stripping, such as aluminum, magnesium, or plastics. Keenserts are commonly used in applications requiring high strength and reliability, such as in aerospace, automotive, and industrial machinery.
How Does Keenserts Work?
Design and Structure:
External Threads: Keenserts have external threads that allow them to be screwed into a pre-drilled hole in the base material.
Internal Threads: The internal threads of the Keensert are the same size as the original bolt or screw, allowing for standard fasteners to be used.
Keys: The most distinctive feature of Keenserts is the set of keys (usually 2 or 4) on the outside. These keys provide additional mechanical locking by driving into the base material, preventing the insert from rotating or pulling out.
Installation Process:
Preparation: A hole is drilled into the base material, and the hole is tapped to match the external threads of the Keensert.
Insertion: The Keensert is screwed into the tapped hole.
Key Driving: Once the Keensert is fully inserted, the keys are driven down into the base material using a special installation tool or a hammer. This step locks the Keensert in place.
Advantages:
High Strength: Keenserts provide a strong, wear-resistant thread that can withstand high loads and repeated use.
Prevents Thread Stripping: The insert distributes the load over a larger area, reducing the risk of stripping the threads in the base material.
Reparability: If the internal threads of a Keensert become damaged, the insert can be removed and replaced with a new one without damaging the base material.
Removal:
Extraction: The keys are first pulled up using a special extraction tool or pliers. The Keensert can then be unscrewed and removed from the hole.
Keenserts are used in applications where a strong and reliable thread is required, and they are particularly useful in situations where frequent assembly and disassembly occur.