What is Bearing? | Types of Bearing in Hindi with Animation

The bearing is a machine element which does the work of reducing friction between two moving parts to get the required motion. The word bearing has been originated from the verb “to bear”. Besides from reducing friction between two rotating parts, bearings also play the role of supporting thrust as well as radial load.
1. Plain Bearing:
The plain bearing is the easiest type of bearings, and it is often called as a sliding bearing or slide bearing. The key feature of this bearing is that it consists of only bearing surface and no rolling elements. You can consider a shaft rotating in a hhole as a plain bearing. Pillow block, stuffing box, and ring oiler are the additional elements which are required during the plain bearing.
2. Rolling Element Bearing:
It is the type of the bearing in which load is carried out by positioning rolling elements inside the races. Races are nothing but the two bearing rings. Generally, five rolling elements like a cylindrical roller, needle rollers, spherical rollers, tapered rollers, and balls are used as rolling elements in rolling element bearings.
Rolling element bearing has two types:
A) Ball Bearings:
In ball bearing, the gap between the races is kept with the help of the ball. The width of the ball bearing is always less than the diameters of the ball used.
Ball bearing again has following types by the load as well as groove cut:
(i) Single row ball bearings:
As per the name, in this bearing balls are arranged in an identical manner in one row.
(ii) Double row ball bearings:
They have two rows of balls arranged in a specific manner, and they have two grooves cut.
(iii) Angular contact ball bearings:
Such bearings are designed to bear angular as well as axial loads.
(iv) Thrust ball bearings:
Thrust ball bearings are used if you have to handle vertical thrust load. Sometimes, horizontal thrust load can also be operated with this bearing.
(v) Self-aligning ball bearings:
They are capable of withstanding journal loads.
B) Roller Bearing:
The roller bearings have higher load bearing capacity than the ball bearings. These bearings have high chances of failures in case of absence of lubricant. Roller bearings are divided into various types by the type of roller used in them:
(i) Cylindrical roller bearing:
In this type of bearings, a cylinder is used, and it has a higher diameter than its length.
(ii) Gear Bearing:
This bearing has an arrangement like elliptical gears, and in this bearing, smaller satellite gears are present which perform their revolution around the center of bearing. These bearings increase efficiency as well as it reduces the sliding friction.
(iii) Spherical roller bearing:
Spherical roller bearing has an inner ring, outer ring, cages, spherical rollers, etc.
(iv) Needle roller bearing:
A needle roller bearing is made up of long, thin cylindrical rollers and it has the shape like needles.
(v) CARB toroidal roller bearing:
MangusKellstrom invented the CARB bearing in 1995. The key feature of this CARB toroidal roller bearing is that its radius of curvature is much larger than its possible spherical radius.
3. Jewel Bearing:
The main characteristic of the jewel bearing is that metal spindle is turned into a jewel-lined pivot hhole. The benefits of the jewel bearings have small weight as well as size, low friction and their ability to work without any lubrication.
4. Fluid Bearing:
A fluid bearing is a special type of bearing in which there is no sliding friction, wear or any vibrations.
Fluid bearings have two types hydrostatic and hydrodynamic.
(i) Hydrodynamic fluid bearings:
This bearing depends on the part of the shaft resting on the fluid to pressurize fluid between its surfaces. This type of bearings is generally used in the electric motors, hydroelectric generators, cooling pumps, etc.
(ii) Hydrostatic fluid bearings:
The important feature of the hydrostatic fluid bearings is that they can handle heavy loads at the low speeds. They are more durable bearings, and therefore, they have a longer life.
5. Magnetic Bearing:
In the magnetic bearing, the phenomenon of magnetic levitation is used to support the load. Compressors, turbines, pumps, motors, as well as generators, use the magnetic bearings. Nowadays, they are highly used in artificial hearts.
6. Flexure Bearing:
In the flexure bearing, a flexible element is manufactured in such a way that, it is suitable in specific degrees of freedom.
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बहुत-बहुत धन्यवाद सर आपका और आपका चैनल का जो इंफॉर्मेशन हमारे तक पहुंचा

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