This European Standard specifies the requirements related to safety for hoist chain, Grade T (type T quenched and tempered and types DAT and DT case hardened), for use in serial chain hoists manual and power driven. Type DAT and type DT hoist chains possess surface hardnesses greater than core hardness and are used for power driven chain hoists to offer greater resistance to wear. Type DT hoist chain differs from DAT hoist chain in having higher surface hardness and/or greater case depth to optimise wear resistance. The standard is applicable to electrically welded round steel short link hoist chains conforming to EN 818-1. The range of nominal size of hoist chains covered by this European Standard is from 4 mm to 22 mm. The hazards covered by this European Standard are identified in clause 4.
EN 818-7:2002+A1:2008 Referenced Document
EN 1050:1996 Safety of Machinery - Principles for Risk Assessment
EN 292-1:1991 Safety of machinery; basic concepts, general principles for design; part 1: basic terminology, methodology
EN 818-1:1996 Short link chain for lifting purposes - Safety - Part 1: General conditions of acceptance (Incorporates Amendment A1: 2008)
EN ISO 7500-1:2004 Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system
ISO 4301-1:1986 Cranes and lifting appliances; Classification; Part 1 : General
ISO 4965:1979 Axial load fatigue testing machines; Dynamic force calibration; Strain gauge technique
ISO 643:2003 Steels - Micrographic determination of the apparent grain size
ISO 6507-1:2005 Metallic materials - Vickers hardness test - Part 1: Test method
EN 818-7:2002+A1:2008 history
2008EN 818-7:2002+A1:2008 Short link chain for lifting purposes - Safety - Part 7: Fine tolerance hoist chain, Grade T (Types T, DAT and DT)
2002EN 818-7:2002 Short link chain for lifting purposes - Safety - Part 7: Fine tolerance hoist chain, Grade T (Types T, DAT and DT) (Incorporates Amendment A1: 2008)