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.

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

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.

Test: Shafts, Keys & Couplings - 1 - Question 8 Save Some of the mechanical properties are 1. sufficiently high strength 2. low sensitivity to stress concentration 3. wear resistant 4. good machinability 5. ability to withstand shock and impact loads The desirable properties for a shaft and axle material are A. 2 and 4 B. 1,2 and 3 C. 1,2 and 5 D.

Archimedes' Principle, Pascal's Law and Bernoulli's Principle Lesson—Practice Problems Worksheet Answer Key 1 Practice Problems Worksheet Answer Key Show complete solutions to the following problems and box final answers with units. 1. A sample of an unknown material weighs 300 N in air and 200 N when submerged in an alcohol solution

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, 

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

One of the likely key issues with a gear type coupling at 13000 RPM will be sludge collecting in the teeth which can in time partially or totally lock up the coupling; see the attached diagram showing lubricant path through the teeth. This causes forces to be generated that can result in vibration.

A square key is to be used in 40 mm diameter shaft and that will developed a 2 KN-m torque. If bearing stress of the key is 400 Mpa, determine the cross sectional dimension of square key to be used if key length is 30 mm. Answer: D A. 324 mm B. 246 mm C. 446 mm D. 277 mm; A 100 KN force is acting on a key that has a length of 4 times its height.

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.

of saddle keys, friction between the shaft, key and. 3 IS 2048-1983: Specification for Solution. Given kW = 15 n = 720 rpm Su=460 N/mm2. (s)=3 d=25 mm.