How to Design the Optimum Hinge

There are two primary types of hinges: 1) a free fit hinge has little to no friction or drag when the latch or handle is rotated. Hinge components are “free” to rotate independent of one another, and 2) a friction fit hinge requires interference to prevent free rotation of components relative to one another. Depending on design intent, resistance can vary from a slight drag to a value sufficient to maintain the fixed position of components anywhere in their full range of rotation. This White Paper provides essential design guidelines for Engineers to achieve optimum long-term performance of both types of hinges.

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