Analisa Tegangan Maksimum Wire Rope Dan Hook Pada Overhead Hoisting Crane Kapasitas 7,5 Ton

ABSTRACT Wire rope and Hook are components that function as work equipment on overhead hoisting crane units. This analysis aims to determine the maximum stress that can be resisted by the wire rope and hook on the overhead hoisting crane by calculating the maximum tensile wire rope, hook tensile stress and hook pressure tension. Data collection is done by measuring on the wire rope and hook. Then do the calculation analysis on the wire rope and Hook using equations according to theory. The result of calculation of maximum tensile stress on wire rope type 6x37 = 222 x 1c at 451,55 (kg / mm2) and on wire rope type 6x19 = 114 x1c equal to 519,69 (kg / mm2). Results of calculations on single hook large tensile stresses of 6.14 (kg / mm2), for compressive stresses of 3.59 (kg / mm2) and at double hook large tensile stresses of 6.09 (kg / mm2), for compressive stress of 3.34 (kg / mm2). So the tensile stress and maximum hook pressure does not exceed the maximum allowable voltage of 10 (kg / mm2). Keywords: Crane, wire rope, Hook, Voltage, Security usag