In the crane system in the shape, the first stage is geared with a gearbox and a belt pulley system, the first stage of which is straight geared, the second stage is a helical gear. G load is to be lifted at a speed of 2m / s. 1st pulley diameter is Ød1 = 100mm and 2nd pulley diameter is Ød2 = 600mm. teeth numbers of spur gears Z1 = 18, Z2 = 81. The number of teeth of helical gears is z3 = 20 and Z4 = 80. The section circle diameter of the 4th gear is d04 = 180 mm, Ft43 = 5200 N, Fe43 = 7200 N, Fç43 = 6000 N. efficiency in each of the belt pulley and gear wheels in the system 0.97,The efficiency of each pair of bearings is nt = 0.86 and drum efficiency is nt = 0.92. ØDT = 500mm and the dimensions of the shaft on which it is located are given as a = 240 mm, b = 160 mm vs L = 640 mm. The power of the motor that drives the system is N = 17kW. Assuming the life of the angular contact ball bearings from the 33 series of drum shaft, Lh = 20.000 operating series; Determine the A and B bearings.
Note:
kasnak = pulley
tambur = drum
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