§ 29.130. Collars, couplings and clutches.
(a) Collars. Revolving collars, including split collars, shall be cylindrical, and screws or bolts used in collars shall not project beyond the largest periphery of the collar, or they shall be encased.
(b) Couplings. Shaft couplings when located 7 feet or less above the floor or working platform or within less than 18 inches from the hand oil bearings shall be so constructed as to present no hazard from bolts, nuts, set screws, or revolving surfaces or shall be enclosed by a cylindrically smooth enclosure.
(c) Clutches. Clutches or clutch pulleys having projecting parts, when the clutches or clutch pulleys are located 7 feet or less above the floor or working platform or when they are less than 18 inches from hand oil bearings, shall be enclosed by a stationary guard constructed in accordance with this subchapter. However, when clutches, cutoff couplings or clutch pulleys are so located within a machine or otherwise guarded by location, compliance with the requirement of this section shall be within the discretion of the Department.
(d) Handles. Clutch handles shall be rounded and located as far as possible from danger but within easy reach of the operator. Control handles shall be so arranged that the operator can stop the machine from the usual operating position. The clutch handle shall be located outside the guard when clutch is guarded.
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