SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
10th Edition
ISBN: 9781260163155
Author: BUDYNAS
Publisher: MCG CUSTOM
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Chapter 17, Problem 14P
To determine
The design of a friction belt drive.
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Select a suitable Vbelt drive for a flour mill transmitting power from a motor of 10 kW rotating at 1,440 rpm using suitable charts. The mill rotates at 400 rpm for a service of 22hrs per day and is to be arranged in minimum space with center distance of 0.5m. Assume that the pitch diameter of small pulley is 100mm.
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A motor driving a solid circular steel shaft transmits 40 kW of power at 500 rpm. If the diameter of the shaft is 40 mm, the maximum shear stress in the shaft is
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(b) It is suggested that chain drive may be used for the power transmission, design a chain drive.
Chapter 17 Solutions
SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
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- A 60 hp air pump blower in 18hr/day service running at a speed of 500 rpm is driven by means of a multiple v-belt drive which is powered by a compressor-stator motor with speed 1300 rpm. The center distance must be between 30 to 40 inches and the available driver sheave diameter iS 14 inches. Recommend a multiple v-belt drive that respects the following condition stated.arrow_forwardA v-belt drive is to transmit 330kW power from a pulley of 1m diameter running at 250rpm. The safe pull in each belt is 800N and the mass of the belt is 0.46kg per meter length. The angle of lap and the groove angle is 160º and 45ºrespectively. If the coefficient of friction between the belt and the pulley is 0.3. Calculate the number of belts requiredarrow_forwardA bilge pump requires 380 N.m torque at about 320 rpm. It is driven by an 1160 rpm motor by means of a roller chain. The nature of service calls for a service factor of 1.5. If the total efficiency of transmission is 95 percent, what is : The size of the motor? Number of sprocket teeth? The pitch and number of strands of the chain required?arrow_forward
- An industrial fan running at 600 rpm is driven by a 25kW, 960rpm, induction motor using an open belt drive. The pulley is mounted on the motor shaft of 270mm diameter. Center distance between the two shafts is 1.45 meters and coefficient of friction is 0.35. Assume thickness of belt equal to 6.5 mm and an allowable stress of 2.86MPa for belt material. Calculate the following: a) Angle of lap for both pulleys; b) Length of the belt; and c) Width of the belt (disregard standard size).arrow_forwardA 2hp motor is to drive a food shredder. The motor is projected to run at 1450 rpm and the required speed at the food shredder is 60 rpm. Design a double reduction drive consisting of belt and chain for this application. Please give solution and show drawing if neededarrow_forwardA belt conveyor transports 18 tonnes per hr at 20°. Determine the speed reducer power factor to lift the load vertically up sufficient to give 33.5 m horizontal center-to-center pulley distance. 1750-rpm motor, plain chain drive to helical gear speed reducer. Belt speed, 61 m/min. Discharge over tail pulley. No tripper.arrow_forward
- What power can be transmitted by a solid shaft with torque 120 Nm and at frequency of 14 Hz?arrow_forwardA truck equipped with a 50 HP engine uses a roller chain as the final drive to the rear axle. The driving sprocket runs at 225 rpm with a center distance of approximately 500 fpm. The transmission efficiency between the engine and the driving sprocket is 85%. 1.1 Determine the pitch and width of chain to be used. 1.2 Determine the number of teeth in each sprocket and the pitch diameters.arrow_forward4. A roller chain is to transmit 38.5 hp from a splitphase motor, turning 650 rpm, to a reciprocatingpump, turning at 200 rpm. The system useschain#100 with smaller sprocket having 21 teeth.Assuming a service factor of 1.6 using C = D2 + D1/2,determine (a) the rated horse power of the chain, (b)number of teeth of the larger sprocket, (c) the pitchlength of the chain, and (d) the number of strandsrequired. Express your answer in 3 decimal place.arrow_forward
- The shaft of a belt drive is made of AISI C1020 as rolled steel. The belt tensions vary continuously during transmission at a constant tension ratio of 3:1; the maximum tight side tension being 400 lb and the minimum tight side tension is expected to be 160 lb, at a pulley diameter of 12 inches. For a Goodman factor of safety of 1.8, recommend the diameter of the shaft. Consider a machined surface and the effect of a hardened profile keyway in the shaft.arrow_forwardA V-belt drive is required for a 20 Kw, 1440 rpm electric motor which drives a compressor running at 480 rpm for a service of 15 hrs per day. For space consideration, the center distance should be approximately 1.2 m. Determine, i) belt specification ii) number of belts iii) correct center distance iv) pulley diameters.arrow_forwardA 400 rpm blower is driven by a 7.5KW synchronous motor at 1750 rpm B 158 V – belt of premium quality is tobe used to transmit power. Calculate the center line of the shafts.arrow_forward
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