Kæder

Kæder is the Danish term for chains. A chain is a connected series of metal links designed to bear loads, transmit mechanical power, or secure and restrain objects. The singular form is kæde and the plural is kæder. Chains are used in a wide range of applications, from industrial lifting and rigging to everyday jewelry when rendered as decorative chains.

Industrial chains come in several types. Link chains provide the basic architecture for lifting and securing; roller chains are common in mechanical power transmission; and specialized forms such as stud chains and conveyor chains serve specific industrial roles. Materials vary from carbon and alloy steels to stainless steel, often with protective coatings such as galvanization to resist corrosion. In jewelry, chains include variations such as cable, curb, figaro, and rope chains, typically made from gold, silver, or other metals.

Standards and safety are important for lifting chains. European and international standards, such as the EN 818 series, prescribe requirements for steel lifting chains. Chains used for lifting are usually rated by grade (for example G80 or G100) indicating minimum tensile strength, with higher grades providing greater capacity. Regular inspection is essential to detect wear, elongation, corrosion, or deformation; damaged chains should be retired from service. Practical guidelines emphasize avoiding overload, sharp impacts, and side loading, and ensuring that chains are used with compatible hooks, links, and fittings.

Historically, chains have been used since ancient times for towing, lifting, and securing loads, with development advancing alongside steel production and manufacturing technology. Today they remain a fundamental component in industry, construction, transportation, and, in the form of jewelry, in personal adornment.