Some of the detailed requirements for Mechanical Power-Transmission Apparatus
are presented below:
- Guards for mechanical power-transmission equipment shall be made of metal or other
suitable material. Wood guards may be used in the wood working and chemical industries, in
industries where atmospheric conditions would rapidly deteriorate metal guards, or where
temperature extremes make metal guards undesirable
- All pulleys, belts, sprockets and chains, flywheels, shafting and shaft projections,
gears, and couplings, or other rotating or reciprocating
parts, or any portion thereof, within 7 feet of the floor or working platform shall be
effectively guarded
- All guards for inclined belts shall conform to the standards for construction of
horizontal belts, and shall be arranged in such a manner that a minimum clearance of 7
feet is maintained between the belt and floor at any point outside the guard
- Flywheels protruding through a working floor shall be guarded
- The guard shall extend at least 15 inches above the belt where both runs of horizontal
belts are 7 feet or less from the floor or working surface
- Gear guards, where required, shall extend 6 inches above the mesh point by a band guard
covering the face, or be completely enclosed
- Couplings with bolts, nuts, or set screws extending beyond the flange of the coupling
shall be guarded by a safety sleeve.
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