What are the Types of Bearing? (Part 1)

The accuracy, performance, life and reliability of the bearing play a decisive role in the accuracy, performance, life and reliability of the host. According to the different friction properties of the moving parts, the types of bearing can be divided into rolling bearings and sliding bearings.

Rolling bearings
1. The composition of rolling bearings: outer ring, cage, rolling element, inner ring.

2. Four major parts of rolling bearings:

The inner ring is usually tightly fitted with the shaft and rotates together with the shaft.

The outer ring is usually matched with the housing hole of the bearing seat or the shell of the mechanical part to play a supporting role.

The rolling elements are evenly arranged between the inner and outer rings with the assistance of the retainer.

Its shape, size and quantity directly determine the bearing capacity of the bearing.

The cage separates the rolling elements evenly and guides the rolling elements to move on the correct track.


3. Types of the rolling elements: ball, spherical roller (symmetrical/asymmetrical), cylindrical roller, needle roller, tapered roller.


4. Types of cages: ferrous metal cages, non-metallic cages, non-ferrous metal cages.


5. Classification of rolling bearing dimensions:

① Miniature bearings-bearings with a nominal outer diameter range D <26mm;

② Small bearings-bearings with a nominal outer diameter range of 26 ≤D＜60mm;

③ Small and medium-sized bearings-bearings with a nominal outer diameter range of 60 ≤D＜120mm;

④ Medium and large bearings-bearings with a nominal outer diameter range of 120 ≤ D <200mm;
DALIAN GUANGYAGN BEARING is a professional ball bearing company, we focuses on producing different types of ball bearings and roller bearings with high quality. Want to know more, please contact us. 


How Many Kinds of Bearings are there and What are the Uses? (Part 2)

2. Self-aligning ball bearings
Double-row steel balls, which have a inner spherical shaped outer ring raceway, are enable to automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing. The tapered bore bearing can be easily installed on the shaft through the use of fasteners that mainly can bear the radial load.

Main function: woodworking machinery, textile machinery drive shaft, vertical self-aligning bearing with seat.

3. Spherical roller bearing
Spherical roller bearing is equipped with spherical rollers between the outer ring of the spherical raceway and the inner ring of the double raceway. According to the different internal structure, it is divided into four types: R, RH, RHA and SR. Because of the consistency of the arc center of the outer ring raceway and the bearing center, it has the self-aligning performance so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing. Besides, the spherical rollers bearing can stand the radial load and bidirectional axial load.

Main applications: paper manufacturing machinery, reduction gears, railway vehicle axles, rolling mill gearbox seats, rolling mill roller tables, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical self-aligning bearings with seats .

4. Thrust spherical roller bearings
The spherical rollers in this type of bearing are arranged obliquely. Due to the raceway surface is spherical and has self-aligning performance, it can allow the shaft to have a certain tilt, and the axial load capacity is very huge. It can also bear several radial load, The oil lubrication is generally used when in use.


Main applications: hydroelectric generators, vertical motors, propeller shafts for ships, reducers for rolling screws of rolling mills, tower cranes, coal mills, extruding machine, and forming machines.
DALIAN GUANGYAGN BEARING is a professional ball bearing factory , we focuses on producing different types of ball bearings and roller bearings with high quality. Want to know more, please contact us. 


How Many Kinds of Bearings are there and What are the Uses? (Part 1)

Bearings are a dominant parts in mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of the mechanical load during the transmission of the equipment.

There are many types of bearing. Bearings are classified into radial bearings and thrust bearings according to hthe different bearing directions or nominal contact angles. According to the types of rolling elements, it is divided into: ball bearings and roller bearings. According to whether it can be adjusted, it can be divided into: self-aligning bearings, non-aligning bearings (rigid bearings). According to the number of rows of rolling elements, it is divided into single row bearings, double row bearings, and multiple row bearings. According to whether the parts can be separated, it can be divided into: separable bearings and non-separable bearings. In addition, there are classifications according to the structural shape and physical size. This article mainly shares the characteristics, differences and corresponding uses of the 4 common bearings.

1. Angular contact ball bearings
There is a contact angle between the ring and the ball. The standard contact angles are 15°, 30° and 40°. The larger the contact angle is, the greater the axial load capacity will be. The smaller the contact angle is, the more conducive to high-speed rotation will be. The single row bearings can stand the radial load and the unidirectional axial load. The two single row angular contact ball bearings combined on the back of the structure share the inner ring and outer ring, which can bear the radial load and the bidirectional axial load.

The main purpose:
Single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, front wheel of small car, differential pinion shaft. Double rows: oil pumps, roots blowers, air compressors, various transmissions, fuel injection pumps, printing machinery.
DALIAN GUANGYAGN BEARING is a professional ball bearing manufacturer , we focuses on producing different types of ball bearings and roller bearings with high quality. Want to know more, please contact us. 


What are Thrust Bearings Used for?

Thrust bearings can reduce the friction and cope with pressure well. Meanwhile, it enable the rotational or linear movement between the various parts of the automobiles and other machinery, allowing the metal parts to work smoothly, and then extend their durability. Additionally, the thrust bearing is also a kind of rolling bearing.

The functions of thrust bearings are as follows:
1. The function of the bearing is to fix the shaft so that it can only rotate, and then control its axial and radial movement. Otherwise the shaft can move in any directions. But when the motor is working, it only allows the shaft to be rotated. Thus, the motor cannot work without a bearing.

2. Lubrication. The lubrication action of the thrust bearing can reduce the internal friction and wear of the bearing, avoid burning and increase its service life. The lubrication can also discharge the frictional heat and cooling to prevent the bearing from becoming too hot and causing the problems of the aging of the lubricating oil and foreign matter entering the bearing o the rust, corrosion, etc.

Although it allows rotation between parts similar to other bearings,the bearings are primarily designed to support axial loads. Thrust bearings supplied by thrust bearing manufacturer has rich fuctions.

Attention points for thrust bearings:
Distinguish the tight ring and the loose ring of the bearing.

Need to distinguish the static parts of the organization.

The loose ring of the bearing should always rest on the end face of the stationary part.
DALIAN GUANGYAGN BEARING is a professional ball bearing manufacturers in china, we focuses on producing different types of ball bearings and roller bearings with high quality. Want to know more, please contact us. 


What is a Radial Bearing?

1. Definition of radial bearing:
Radial bearing is dified as sliding bearing for bearing radial loading.

The part that makes up the shaft supported by the bearing is called the shaft neck, and the parts that matches the journal are called the bearing bush. The bushes that are made into a full cylinder are called the part of bush holding the shaft sleeve, which is know as the shell units. The upper part is called the bearing cover and the lower part is called the bearing seat. The cover and the seat are connected by studs. The joint part of the two is positioned by a stop or a pin, and can put gaskets in different thicknesses which is used to adjust the bearing gap. The joint surface of most bearings is horizontal. Some are inclined to meet the requirement that the load direction is closely perpendicular to the joint surface. In order to facilitate the lubricating oil to enter between the friction surfaces, an oil injection hole is opened on the bearing cover. The axial oil groove for distributing lubricating oil is provided on the bearing bush. The bearing caps and seats are mostly made of cast iron, and those with heavy loads are using welded structures made of cast steel or steel plate .

2. Structure types of radial bearing
There are several types of radial sliding bearings, such as split type, integral type, flange type and self-positioning type. The bearing cover of the split bearing can be opened to facilitate the installation of the journal, and the bearing clearance can be adjusted easily after the bearing bush is worn. The integral bearing has a simple structure. But the shaft neck must be installed from one end. The gap cannot be adjusted after it gets worn. The mounting surface of the flange bearings is perpendicular to the center line of the bearing. The self-aligning bearings can automatically adjust the axis to adapt to the deflection and deformation of the axis.

The inner hole diameter of the radial sliding bearing is called the bearing diameter. The axial dimension of the bearing bush is called the bearing width. The rate of the bearing width and the bearing diameter is named the width-diameter ratio, which is generally 0.4 to 1.5. To reduce the axial dimension (such as in an internal combustion engine), it is also 0.25 sometimes. The width-diameter ratio has a great influence to the bearing performance.
DALIAN GUANGYAGN BEARING is a professional ball bearing suppliers, we focuses on producing different types of ball bearings and roller bearings with high quality. Want to know more, please contact us.