An assembly of linked parts or components at least one of which moves, with appropriate actuator, control and power circuits etc., joined together for a specific application, in particular for the processing, treatment, moving or packaging of a material.

• Safety of any powered equipment with moving parts
• Power can be electrical, pneumatic, hydraulic or other;
• Requirements for guarding, safety factors for loading, reliability of safety systems, marking and instructions;
• Extensive requirements for marking and instructions