PPT: Bearings | Design of Machine Elements - Mechanical Engineering PDF Download

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A Bearing is a device  that support 
load and reduces the friction of 
motion between moving machine 
parts. 
2 
Page 2


A Bearing is a device  that support 
load and reduces the friction of 
motion between moving machine 
parts. 
2 3 
Page 3


A Bearing is a device  that support 
load and reduces the friction of 
motion between moving machine 
parts. 
2 3 
? Plain or slider bearing  
 
 
 
 
 
 
? Rolling or anti-friction 
bearing  
4 
Page 4


A Bearing is a device  that support 
load and reduces the friction of 
motion between moving machine 
parts. 
2 3 
? Plain or slider bearing  
 
 
 
 
 
 
? Rolling or anti-friction 
bearing  
4 
Plain or slider bearing : -  
 In which the rotating shaft has a sliding 
contact with the bearing which is held 
stationary. Due to large contact area 
friction between mating parts is high 
requiring greater lubrication. 
 
5 
Page 5


A Bearing is a device  that support 
load and reduces the friction of 
motion between moving machine 
parts. 
2 3 
? Plain or slider bearing  
 
 
 
 
 
 
? Rolling or anti-friction 
bearing  
4 
Plain or slider bearing : -  
 In which the rotating shaft has a sliding 
contact with the bearing which is held 
stationary. Due to large contact area 
friction between mating parts is high 
requiring greater lubrication. 
 
5 
A linear table with four 
linear bearings  
6 
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FAQs on PPT: Bearings - Design of Machine Elements - Mechanical Engineering

1. What is a bearing in mechanical engineering?
Ans. A bearing is a mechanical component that supports the relative motion between two parts, typically rotating or sliding, while reducing friction and enabling smooth movement.
2. What are the different types of bearings used in mechanical engineering?
Ans. There are several types of bearings used in mechanical engineering, including ball bearings, roller bearings, plain bearings, thrust bearings, and needle bearings. Each type has its own unique design and application.
3. How do bearings help in reducing friction?
Ans. Bearings help in reducing friction by providing a smooth and low-friction surface between moving parts. They are designed with rolling elements or a sliding surface that separates the two parts, minimizing direct contact and therefore reducing friction.
4. What factors should be considered when selecting a bearing for a specific application?
Ans. When selecting a bearing for a specific application, factors such as load capacity, speed, operating temperature, lubrication requirements, and environmental conditions should be considered. These factors ensure that the chosen bearing is suitable for the desired function and can perform effectively and reliably.
5. How can bearing failure be prevented in mechanical systems?
Ans. Bearing failure in mechanical systems can be prevented by proper lubrication, regular maintenance, correct installation techniques, and avoiding excessive loads or speeds. Additionally, selecting the appropriate bearing type and size for the specific application and ensuring proper alignment and clearance also contribute to preventing bearing failure.
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