Engineering, 16.04.2020 18:23, nataliaguadaluoupa25
A countershaft in a machine has two pulleys mounted on it for power transmission and is supported by cylindrical roller bearings at the ends. The countershaft runs at 1,500 revolutions per minute. The belt tension on the loose side of Pulley 1 is 15% of the tension on tight side. The pulleys are 50 mm wide. The bearings must have a minimum life of 90,000 hours. Design the shaft, mounting components and bearings. The design will include the following items. (1) Shaft material selection (2) Shaft diameters at critical locations along the shaft (using a factor of safety of 1.5) (3) Selection and design of the components needed for mounting the shaft and bearings (4) Selection and design of bearings
Answers: 1
Engineering, 04.07.2019 18:10, oliviasoreo92
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Engineering, 04.07.2019 18:10, 0436500
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
A countershaft in a machine has two pulleys mounted on it for power transmission and is supported by...
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