A single square-thread power screw has an input power of 3 kW at a speed of 1 rev/s. The screw has a diameter of 36 mm and a pitch of 6 mm. The frictional coefficients are 0.14 for the threads and 0.09 for the collar, with a collar friction radius of 45 mm. Find the axial resisting load F and the combined efficiency of the screw and collar.
Answer to relevant QuestionsA bolted joint is to have a grip consisting of two ½ -in steel plates and one wide ½ -in American Standard plain washer to fit under the head of the ½ in-13 X 1.75 in UNC hex-head bolt. (a) What is the length of the ...From your experience with Prob. 8–15, generalize your solution to develop a turn-of-nut equation Where Nt = turn of the nut from snug tight θ = turn of the nut in degrees N = number of thread/in (1/p where p ...In the figure for Prob. 8–20, the bolts have a diameter of ½ in and the cover plate is steel, with D = ½ in. The cylinder is cast iron, with E = 5/8 in and a modulus of elasticity of 18 Mpsi. The ½ -in SAE washer to be ...In the figure for Prob. 8–20, let A = 0.9 m, B = 1 m, C = 1.10 m, D = 20 mm, and E = 25 mm. The cylinder is made of ASTM No. 35 cast iron (E = 96 GPa), and the head, of low-carbon steel. There are thirty-six M10 X 1.5 ISO ...A bolted lap joint using SAE grade 5 bolts and members made of cold-drawn SAE 1040 steel is shown in the figure. Find the tensile shear load F that can be applied to this connection if the following factors of safety are ...
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