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Permissible limit stress according to EN 818-7 and ISO 3077

In hoist operations, it must be ensured that the maximum limit stress of the chain according to EN 818-7 and ISO 3077 is not exceeded. As chains run over the wheels and during service, oscillating forces are generated, which load the chain above the working load (polygone effect of the chain wheel, acceleration-, breaking shocks). The quotient ,,Limit stress / at working load limit'' is the shock-factor of the hoist.



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