keys and coupling problems with solutions

Design the rectangular key for a shaft of 50 mm diameter. The shearing and crushing stresses for the key material are 42 MP and 70 MPa. Solution. Given d = 50 

03/10/  · Here are six common mistakes made in assembly and maintenance of flexible couplings. Misalignment— While couplings are designed to allow some misalignment and varying degrees of flex, excessive misalignment between joined shafts is one of the most common reasons for failure. Often, a mechanic will not check the alignment before installing a

Crushing failure of flat keys​​ Sc = compressive stress (lb/in2) = Sy t = total height of the key (in.) A ½-inch shaft transmits 5 hp at 1750 rpm.

Hello Dear Students,. Engineering design is the method that engineers use to identify and solve problems. It has been described and mapped out in many ways, 

Sunk Keys. The sunk keys are provided half in the keyway of the shaft and half in the keyway of the hub or boss of the pulley. Rectangular sunk key : The usual proportions of this key are width of key (W) = d/4 and thickness of key (t) = d = diameter of the shaft, The key has taper 1 in 100 on the top side only.

1 FLAT AND SQUARE KEYS DESIGN PROBLEMS 521. A 2-in. shaft, of cold-drawn AISI 1137, has a pulley keyed to it. (a) Compute the length of square key and the length of flat key such that a key made of cold-drawn C1020 has the same yield strength as the shaft does in pure torsion. (b) The same as (a), except that the key material is

Each part of the process reveals information about the problem and possible solutions. Engineering design is iterative. Engineers are expected to repeat the process. Steps like defining, planning, modeling, and testing, can be completed in different sequences to find the best possible solution. Engineering design is problem-solving.

The most significant problem with this is maintaining accuracy of location due to a difference in angular displacement from one end of the coupling to the other. 7. Lack of consideration for backlash Backlash is the loss of motion momentarily in a coupling.

Design the keyway in the motor shaft extension. Check the shear strength of the key against the normal strength of the shaft. Solution. Given : P = 15 kW = 15 × 103 W N = 960 r.p.m. d = 40

Download free EduRev App · Splines. · Strength of a Key · When the key material is same as that of the shaft then, l = 1.571 d. · The keyways cut into the shaft 

Recitation 7–Key and Coupling Examples - SolutionsKey Example 1A 63.5 mm-diameter shaft is fixed to a gear hub with a16 16 mm key. The shaft material has 

Keys, Couplings and Seals Material taken for Mott, 2003, Machine Elements in Mechanical Design Keys zA key is a machinery component that provides a torque transmitting link between two power-transmitting elements. zThe most common types of keys are the square and rectangular parallel keys. With the square being the most common.

Key is used to transmit torque between shaft and the component mounted on the shaft. Square and flat keys are most common. Other types of keys Key size Actual stresses acting on keys are difficult to determine Simplified mechanical stresses equations for shear and compression Tangential Force at shaft diameter: F= T/(D/2) = 2T/D

FLANGE Punching shear KEYS COUPLINGS Problem 22 A 4 inches shaft using a flat from COE 224 at Camarines Sur Polytechnic Colleges Nabua Main Campus. Study Resources. Main Menu; by School; Browse Textbook Solutions Ask Expert Tutors You can ask

View key-and-coupling.pdf from BSME 101 at Polytechnic University of the Philippines. Machine Design 1 MEEN 30314 Problems in Key and Coupling Submitted to: Engr. EDWIN C.

1 August 15, 2007 1 15. Couplings and Keys Objectives • Recognize different types of keys and their standard sizes. • Size keys for appropriate structural loads. • Recognize many types of

SECTION 8 – KEYS AND COUPLINGS FLAT AND SQUARE KEYS DESIGN PROBLEMS 521. Solution: For AISI 1137 shaft, Table AT 8, sy = 93 ksi Yield Strength of Shaft 

ii) the shaft diameter on the basis of torsional rigidity. Compare the results of these two examples and comment on the results. Solution. Given G = 79 300 N/ 

Design Of Shafts Design of Keys and Design of Couplings. Design of Machine Elements 2 mark Question and Answers Problems for practice; 129.

6.4 Strength of a Sunk Key 6.5 Effect of Keyways 6.6 Couplings 6.7 Summary 6.8 Key Words 6.9 Answers to SAQs 6.1 INTRODUCTION A key is a piece of steel inserted between the shaft and hub or boss of the pulley to connect these together in order to prevent relative motion between them. It is always inserted parallel to the axis of the shaft.

Muff coupling is also called sleeve coupling or box coupling. It is a type of rigid coupling. It consists of a sleeve or a hollow cylinder, which is fitted over the ends of the input and output of the shaft by means of a sunk key. It is the simplest form of coupling with only two parts sleeve and key. It is simple to design and manufacture.

Keys and Coupling 489 Since the service factor is 1, therefore the maximum torque transmitted by the shaft, Tmax = 1 × 159 = 215 N-m = 215 × 10 3 N-mm We know that the torque transmitted by the shaft ( T ), 215 × 10 3 = 16 s dd 331640 ππ×τ × = × × = 7 d 3 ∴ d 3 = 215 × 10 3 / 7 = 27 × 10 3 or d = 30 say 35 mm Ans.

Round keys, and. 5. Splines. 1. Sunk Key. ❖ The sunk keys are provided half in the keyway of the shaft and half in 

solution the torque that can be transmitted by the shaft is 3 3 8000 ( 6 ) 339,292 in.-lb tr j d t j r 16 16 the horsepower is 339,292 (900 ) 4845 hp 63,025 63,025 tn hp the force transmitted through the key is ( / 2 ) 3 / 3 339,292/3 113,097 lb t f d f f t the shear and bearing areas of the key are 1.5 s a wl l and / 2 / 2

Design of Shaft, Hub and Key : The diameter of shaft for flywheel is of shaft problems with solutionsdesign of shafts and keysdesign of shafts keys and 

50+ Keys & Couplings MCQ. This section focuses on the "Shafts, Keys & Couplings online test". Regular practice this MCQ on Shafts to improve their Machine Design skills which help you to crack Entrance Exams, Competitive Exams, campus interviews, company interviews, And placements. MCQ with answers on Shafts can be attempted by anyone who focuses on learning Keys & Couplings MCQ.

6.4 Strength of a Sunk Key 6.5 Effect of Keyways 6.6 Couplings 6.7 Summary 6.8 Key Words 6.9 Answers to SAQs 6.1 INTRODUCTION A key is a piece of steel inserted between the shaft and hub or boss of the pulley to connect these together in order to prevent relative motion between them. It is always inserted parallel to the axis of the shaft.

6.4 Strength of a Sunk Key 6.5 Effect of Keyways 6.6 Couplings 6.7 Summary 6.8 Key Words 6.9 Answers to SAQs 6.1 INTRODUCTION A key is a piece of steel inserted between the shaft and

01/07/  · When it comes to vibration, the devil’s in the details. While it’s pretty easy to pinpoint misalignment, propeller issues or a bent shaft, less conspicuous components like shaft couplings, keys and keyways can also cause issues. In mechanical engineering, keys connect rotating elements, in this discussion, couplings to shafts. The key sits in a keyway,

Safe stress for cast iron coupling = 10 MPa Safe stress for key material = 46 MPa Solution. Given : d = 35 mm n = 6. D1 

GREGADVERSARN dhéach. Design of Keys. C Solution: From PSGDB 5.16, for the given shaft diameter of 80mm. Width of the key