What are the different types of machine guards?

Machine guards come in various types, including fixed guards, which are permanent barriers that protect workers from moving parts; adjustable guards, which can be repositioned for different tasks; self-adjusting guards, which automatically move to accommodate the size of the workpiece; and removable guards, which can be taken off for maintenance or cleaning but must be replaced for safe operation. Each type serves to enhance safety by preventing accidental contact with hazardous machine components. Additionally, electronic guards, such as light curtains and safety mats, use sensors to detect presence and stop machinery when a person is too close.