There seem to be as many hazards created by moving machine parts as there are types of machines.
Safeguards are essential for protecting workers from needless and preventable injuries.
When the operation of a machine or accidental contact with it can injure the operator or others in the vicinity, the hazards must be either controlled or eliminated. This manual describes the various hazards of mechanical motion and presents some techniques for protecting workers from these hazards. These components include flywheels, pulleys, belts, connecting rods, couplings, cams, spindles, chains, cranks, and gears. These can include reciprocating, rotating, and transverse moving parts, as well as feed mechanisms and auxiliary parts of the machine. A wide variety of mechanical motions and actions may present hazards to the worker.