Machine Design

How to Design the Optimum Hinge

Sponsored by


SPIROL International Corporation
There are two primary types of hinges: 1) a free fit hinge where there is 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 where interference is required 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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