Clutch | Definition, Types, Advantages, Disadvantages [Full Guide]

What is a Clutch? A clutch is a mechanical device which is used to connect (or disconnect) two rotating shafts on the will of operator. One of the most prominent application of clutch is in modern automobiles. Many times, it has been found that people confuse between Clutch, Coupling and Brakes. Let us understand differences… Read More »

Coupling | Types, Advantages, Disadvantages, Applications

What is a coupling? A coupling is a mechanical device which is used to hold two rotating shafts together. It is a permanent joint, unlike clutch which can be disengaged on the will of operator. With the help of couplings, we can join two shafts which are intersecting, colinear or parallel (with a small distance).… Read More »

Key | Functions, Types, Advantages, Disadvantages

What is Key? A key is a machine element which is used to connect a shaft to other machine elements like Gears, Pullies, Couplings, Sprockets or Flywheels. Functions of the key There are two basic functions of key Transmit torque to hub and vice versa Prevent relative motion of the shaft and the joined machine… Read More »

Threaded Joints | Features, Advantages, Disadvantages

Threaded joints Threaded joints are defined as separable joints which are used to hold to machine parts together by means of threaded fastening such as bolt and nut. Attribution: By Kees08 – Own work, CC BY-SA 4.0, Features of threaded joints From the above definition we can find some features of them and they are.… Read More »

Recirculating Ball Screw | Applications, Advantages, Disadvantages

Recirculating ball screw A recirculating ball screw consists a screw, a nut and a series of balls. The main difference between a recirculating ball screw and a power screw is that in former the sliding friction gets replaced by rolling friction. Since rolling friction is very less than sliding friction recirculating ball screw has very… Read More »

Power Screw | Applications, Types, Advantages, Disadvantages, Parts

What is a power screw? A power screw is a mechanical component which is used to convert rotary motion into the linear motion. Sometimes a power screw is also known as translation screw. It uses helical motion of screw to transmit the power rather than holding the parts together. Attribution: By Unknown – Downloaded original drawing… Read More »

Residual Stress | Definition, Effect, Relief, Causes [Brief Guide]

What is residual stress? Stresses can the broadly classified into two parts. Load stresses Residual stresses Load stresses are those stresses which remain within elastic limits and are induced due to external forces. When these forces are removed these stresses also become zero. Load stresses can be easily calculated from the equations of strength of… Read More »

Hot and Cold Working Process of Metals | Advantages and Disadvantages

In this article we have discussed hot and cold working process of metals. First, we will discuss hot working and then we will discuss cold working of metals. But before moving to our main topics let us understand one important definition which would be very helpful to us later. What is recrystallisation temperature? The temperature… Read More »