Machine Keys are a critical component to most mechanical assemblies. The machine key plays a coupling role by joining a rotating machine element to a shaft. This coupling joint is referred to as a keyed joint. This connection will allow for minimal but relative movement on the axial between the two components. Precision, Tolerance and Control are crucial components to any mechanical engineering set up. Here at John Gillen Company, all parts are custom made to your exact engineering specifications and standards. We ensure precise manufacturing to your specific requirements that will make all the difference when using them in your application