(a) This Standard establishes performance requirements for air wire rope hoists for vertical lifting service involving material handling of freely suspended (unguided) loads using wire rope as the lifting medium with one of the following types of suspension: (1) lug; (2) hook; (3) trolley; (4) base or deck mounted (does not include base mounted drum hoists of the type covered by ASME B30.7); (5) wall or ceiling mounted (does not include base mounted drum hoists or the type covered by ASME B30.7). (b) This Standard is applicable to hoists manufactured after the date on which this Standard is issued. This Standard is not applicable to: (1) damaged or malfunctioning hoists; (2) hoists that have been misused or abused; (3) hoists that have been altered without authorization of the manufacturer or a qualified person; (4) hoists used for the purpose of drawing both the load and the hoist up or down the hoist's own wire rope; (5) hoists used for marine and other applications as required by the Department of Defense (DOD).
ASME HST-4-1999 history
2021ASME HST-4-2021 Performance Standard for Overhead Electric Wire Rope Hoists
2016ASME HST-4-2016 Performance Standard for Overhead Electric Wire Rope Hoists
1999ASME HST-4-1999 Performance Standard for Overhead Electric Wire Rope Hoists