Ball bearing means ball bearing. This device is a type of ball bearing or rotating gear that is used in any device that rotates to prevent friction or wear of the surface that is rotating on another. For example, they are used to rotate heavy objects and move them, such as car wheels, which are made possible by bearings. Of course, you should know that these parts are used in various parts of the car where friction is possible.
What is a bearings?
The use of bearings is used in all devices that rotate, such as rotating chairs, in order to prevent friction and wear on the rotating surface. For example, in the automotive industry, the presence of bearings helps the movement and rotation of heavy objects such as car wheels. Bearings are produced with the purpose of rotating heavy objects next to each other and preventing their wear by reducing friction and are considered one of the most important human inventions. If there were no bearings, the equipment used would wear out and need to be replaced early. Of course, you should make sure that you have to prepare original samples of this product that can perform their tasks properly. To learn how to identify the original bearing, we suggest you read our article about it.
What is the components of the bearing?
Each bearing is made up of parts, each of which has its own unique characteristics and carries out a task accordingly. These components are:
- قفسه
- ساچمه
- کاسه نمد
- رینگ (کنس) داخلی و خارجی
1) Balling shelf
The rack is one of the most important parts of the bearing that covers the ball. The shelf is responsible for preventing the balls from contacting each other and guiding their movement. There are three types of shelves: solid, polymer and pressed. The material of the solid shelf, which is made through machining, is made of brass and steel.
2) Shot
Balls, or rolling elements, are available in different types of round, needle, cylinder, cone and barrel. Balls can have different uses based on their appearance. All of them are often made of chrome steel alloy with high purity, ceramic and plastic. Round shot is one of the most practical and widely used types of shot. This part has high resistance against the force applied to the bearing and protects it from damage. Other types of balls, such as conical ones, are used in order to bear extra forces in radial and axial directions.
3) The bowl
The felt bowl is placed inside the cages and between the rolls in the middle distance between the ring and the cage in order to prevent leakage and the entry of additional materials, including hydraulic oil. Felt bowls are elastic in order to function properly; For this reason, they are made of elastomer material (a type of polymer). These parts are produced in two types of contact (in order to contact the inner ring) and non-contact, which has no contact with the inner ring. The amount of temperature during work will determine the life of the felt bowl used in the bearing.
4) Rings (concerts) internal and external
The main component of bearings is the inner and outer cone. The material of these two parts is usually high-purity alloy steel, which is placed in the bearing with the purpose of keeping the moving balls. In some cases, such as the use of bearings in the automotive industry, internal and external cushions are made of plastic due to the importance of weight; But it should also be taken into account that the heat resistance of this type is lower than the steel type.
The types of bearings in terms of shape
There are different types of bearings, each of which can be divided into different categories based on a feature. One of these categories is based on appearance, which are classified as follows.
Deep groove bearings
Deep Groove Ball Bearings is one of the most widely used types. The presence of a deep circular groove in each rim with a radius equal to the radius of the ball used is the reason for the name of this product. The existing grooves make the deep groove bearing able to withstand high radial loads along with a small amount of axial forces. In addition, this bearing has the ability to withstand radial and axial compound loads.
Angular call bearings
This type of bearing has a structure similar to the groove type; Their only difference is in the inner and outer rim and the type of angular movement between the rims. In addition, the rings are moved relative to each other in angular contact bearings. Often, two rows of balls are used in the production of this type of bearing. In this product, it is possible to bear radial and axial load at the same time. The contact angle of the inner rim has a direct relationship with the bearing capacity of the axial load in the angular contact bearing and an inverse relationship with the bearing capacity of the radial load.
Self -setting bearings
Another type of self-aligning ball bearing is Self-Aligning Ball Bearings, which have many applications in various industries. This type of bearing has two rows of balls and a common outer ring. This product can automatically perform the necessary adjustments when there is a deviation and misalignment in the bearing shaft due to the curvature in the ball groove. Self-adjusting bearings are often used for places that increase or decrease the angle and deviation after a while due to the creation of various factors.
Complete ceramic bearings
One of the most common bearings produced and used in various industries is the full ceramic bearing. As its name suggests, all its components are made of ceramic (silicon nitride or zirconia). This part has a smooth surface and uniform dimensions, which causes less friction and ultimately less energy is spent to turn the wheels or the crank.
Full ceramic bearing has special features such as electrical insulation, high speed, long service life, cost-effectiveness, wear and corrosion resistance, light weight, rust resistance, less friction, material resistance. Chemical and suitable for high temperatures up to 1000 degrees Celsius.
Ceramic hybrid bearing
This type of product is made with a steel body and ceramic balls. Ceramic balls show good performance when high speed is required. The ceramic used in the balls is lighter than steel and also has a higher degree of hardness than steel.
Due to the non-porous structure of ceramic balls, there is practically no friction when moving in the bearings and they rotate faster than steel balls. One of the most important features of ceramic hybrid bearings is high speed, increasing the useful life of the device, low weight, high hardness, high efficiency and multi-purpose use in all kinds of machines.