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2.24.2.1.1 Sheaves
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Driving-machine sheaves shall be integral with or directly attached to driving-machine shafts. Sheaves shall be provided with steel shafts and metal bearings. Sheaves constructed of plastic, fiber-reinforced plastic, or combinations thereof shall be non-regroovable. Permanent and legible marking shall be provided on or adjacent to the nonmetallic sheaves stating, "Regrooving of sheave is not permitted."
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