Chain Drive | Definition, Types, Advantages, Disadvantages

What is a chain drive? Before understanding chain drive, let us first understand ‘What is a Chain?’. A chain can be defined as a series of links connected by pin joints. Now we can move on to chain drive. A chain drive consists of an endless chain wrapped around two sprockets. Image source: CarEngineer Advantages… Read More »

Brakes I Definition, Types, Advantages, Disadvantages [Full Guide]

What is a Brake? Brake (or Brakes) is a Mechanical device which absorbs kinetic energy of moving systems and brings them to rest. This absorbed kinetic energy is converted into heat and then dissipated to the environment. One of the well-known examples of brakes is in automobiles, where they are used to either slow down… Read More »

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. Image source: NZDL Above image shows a bolt joining two parts. In first case second part works as a nut and in second case a separate nut… 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. Image source: Thomson linear Applications of… 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 »