3. A flange compressive coupling is used to connect a driving electric motor to a reduction gear box of a machine. The motor has an output of 80 KW at 1000 rpm. Work required c. Complete design calculations for the coupling parts (shaft, split cone, flange, tightening bolts). d. Complete assembly drawing for the coupling.

A. PROBLEM ON TOPIC "KEYS AND COUPLINGS": A coupling with material AISI C1045 as rolled transmits 65.5 HP at 1750 rpm. The material of the 1.75 inch shaft... is also AISI C1045 as rolled and the key is cold drawn AISI C1020. N= 2.5. Determine the following: 1. Size of bolt (dia.) if there are 6 bolts made of AISI C1045 as rolled at a bolt circle of 5 inches. Note: Select standard bolt diameter from AT14 of DOME by Faires (see Lecture on fasteners for this Table) Calculated Dia: Standard Size to use: 2. Required b and t if a flat or rectangular key is used: Answer: 3. Required length of key, if a flat or rectangular key is used: Note: Calculate for two type of stresses on key, then select your answer. Length Based on shear length Based on compression: Length to use: 4. Required bif a square key is used: Answer: 5. Required length of key, if a square key is used: Note: Calculate for two type of stresses on kev, then select your answer. Length Based on shear length Based on compression:…

Q1.Expalin requirement of good Shaft coupling.

2. A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the motor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between these pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the belt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kg per meter length. Find the maximum power transmitted without belt slipping in any one of the pulleys. [Ans. 35.9 kW]

A soft start electrical motor that delivers 21,43 KW at 1440 rpm must be connected to a stone crusher (hammer mill type) via a wedge belt drive. The crusher must operate 24 hours per day at a recommended shaft speed of 503,5 rpm,while the centre line distance must not exceed 1000 mm. The crusher shaft is 50 mm in diameter. 1.State the product design specification considering the functionality as a design factor. 2.Use the Fenner catalogue to specify the type and number of wedge belts required for the drive 3.Draw and label all critical parts of the belt drive according to the information provided above

11 For the belt drive in Problem 10, what is the transmitted torque (in lbf"in) in the smaller pulley? Assume that both service factor Kg and safety factor nd are equal to 1.0. OA. 220 OB. 126 OC. 84 OD. 56 OE. None of the above

Draw and design a bushed pin type flexible coupling

Define the term gearbox ratio.

the combination shear and compression elastromeric coupling is designed for what?

3)Design a V – Belt drive to the following specifications Power transmitted = 75kw Speed of driving wheel = 1440rpm Speed of driven wheel = 400rpm Diameter of driving wheel = 300mm Center distance = 2500mm Service = 16hrs/day