They are machines or major tools necessary to complete a given task. They are items which are essential for the development of any structure from its initial stage till the final stage. They comprise of any appropriate set of tools required to generate the machine.
They are assembled from a standardized type of components. These consist of mechanical elements that control the movement in various ways, such as, gear trains, transistor switches, belt or chain drives, linkages, cam and follower systems, brakes and clutches, and structural components such as frame members and fasteners.
Note: When considering the suitability of distance guarding, consider the safe access requirements of maintenance people who gain access by ladder, scaffold or elevated work platform.
The Australian Standards provide information on machinery and equipment safety systems and reflect the current state of knowledge and best practice. The AS4024 Safety of Machinery series of publications provides specific information for commonly used machine types in industry, such as woodworking or metalworking machinery.