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Machine Guarding

All machines consist of three fundamental areas: the point of operation, the power transmission device, and the operating controls. Despite all machines having the same basic components, their safeguarding needs widely differ due to varying physical characteristics and operator involvement. The following pages address the general requirements for machinery set forth by OSHA, the motions and actions that contribute to different machine hazards, and additional considerations that entail overall machine and operator safety:

Point of Operation

The point of operation is where work is performed on the material, such as cutting, shaping, boring, or forming of stock.

Power Transmission Device

The power transmission apparatus is all components of the mechanical system which transmit energy to the part of the machine performing the work. These components include flywheels, pulleys, belts, connecting rods, couplings, cams, spindles, chains, cranks, and gears.

Operating Controls

A mechanical or electrical power control shall be provided on each machine to make it possible for the operator to cut off the power from each machine without leaving his position at the point of operation.

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