The type of bearing, the force characteristics, the application and so on

Mina Electromechanical! Mina Electromechanical is a leading and selling world-renowned brand bearing company. Specializing in the import bearings of world-renowned brands.

Shanghai Mina Electromechanical is located in Shanghai, the company maintains a good bearing import business, with the advantages of independent import sales, has become a relatively large and influential import bearing sales center in Shanghai, and has become a long-term leader in dozens of large state-owned enterprises. Since its establishment, the company has relied on superior geographical advantages, based on the three norths, radiating the whole country, forming a stable sales network, providing high-quality bearings for many enterprises!

Rolling bearing. According to the direction of the load it can bear, it can be divided into radial bearings and thrust bearings.

and radial thrust bearings.

1. Radial bearing.

It is a rolling bearing mainly used to bear radial loads. Such as self-aligning ball shaft version, weight self-aligning roller bearing.

deep groove ball bearings, etc. The nominal contact angle is in the range of 0° to 45°. The radial ball bearings are installed face-to-face, and the spindle is radial and axial due to the temperature rise during operation.

swelled, but due to the internal ring ring.

The outer ring elongates quickly, and as a result of this expansion, an additional axial load is placed on the inner ring of the bearing, i.e. an increased preload.

Support the rotating shaft and the parts on the shaft, and maintain the normal working position and rotation accuracy of the shaft, the rolling bearing is easy to use and maintain, reliable work, good starting performance, and has a high bearing capacity at medium speed. with plain bearings.

In comparison, the radial size of the rolling bearing is larger, its shock absorption ability is poor, the life is low at high speed, and the sound is larger.

2. Thrust bearings.

Thrust bearings are special bearings used to bear axial forces, that is, bearings with forces in the direction of parallel shafts. Thrust bearings are also known as thrust bearings. Such as: thrust ball bearing, two-way thrust ball bearing. It is generally composed of two thrust spacers.

Rolling elements are generally in the most common form, consisting of iron or copper cages combined to form a whole liquid body. The most common type of bearing of this type is a steel ball thrust bearing. It can only withstand axial loads.

3. Radial thrust bearing.

Radial thrust bearings are mainly used for transmission shafts with both radial and axial loads.

The installation and fixing are being carried out. Accepts both radial and axial loads. Such as: angular contact ball bearings.

Thrust spherical roller bearings, tapered roller bearings.

When installing, the inner ring of the bearing should be directly in contact with the inner ring or directly with the outer ring of the bearing, and at the same time, the outer ring of the bearing or the inner ring of the bearing should be applied in the opposite direction and parallel to the axis.

According to the party bearing the load.

Bai direction, axial bearing is divided into.

Centripetal bearing: mainly bears radial load

Such as: spherical return ball bearings, self-aligning roller bearings, deep groove ball bearings.

Thrust bearings: can only withstand axial loads. Such as: thrust ball bearing, bidirectional thrust ball bearing, radial thrust bearing: bear radial load and axial load at the same time. Such as: angular contact ball bearings, thrust spherical roller bearings, tapered roller bearings.

Depending on the direction in which the load is to be bearing, the bearing is divided into:

Centripetal shaft bearing: mainly DU bears radial load. Such as: self-aligning ZHI ball bearings, aligning DAO roller bearings, deep groove ball bearings.

Thrust bearings: can only withstand axial loads. Such as: thrust ball bearing, two-way thrust ball bearing.

Radial thrust bearings: Accept both radial and axial loads. Such as: angular contact ball bearings, thrust spherical roller bearings, tapered roller bearings.

Rolling bearing is a precision mechanical component that changes the sliding friction between the running shaft and the shaft seat into rolling friction, thereby reducing friction loss.

The rolling bearing is generally composed of four parts: the inner ring, the outer ring, the rolling element and the cage, and the function of the inner ring is to cooperate with the shaft and rotate together with the shaft; The outer ring is to match with the bearing seat and play a supporting role; The rolling element is evenly distributed between the inner ring and the outer ring with the help of the cage, and its shape, size and number directly affect the performance and life of the rolling bearing; The cage can evenly distribute the rolling elements and guide the rolling elements to rotate for lubrication.

Support the rotating shaft and the parts on the shaft, and maintain the normal working position and rotation accuracy of the shaft, the rolling bearing is easy to use and maintain, reliable to work, good starting performance, and has a high bearing capacity at moderate speed. Compared with plain bearings, rolling bearings have larger radial dimensions, poor vibration damping ability, lower life at high speeds, and larger sound.

1. Endurance bearings for rolling machinery and equipment in smelters, mines and steel mills.

2. Power equipment of power plants, gas turbines and motor factories have high requirements for bearings. Most of this kind of equipment is continuous operation, the bearing is stressed, the assembly and disassembly are troublesome, and it is inconvenient to replace, so the bearing quality is very stable, wear-resistant and pressure-resistant.

3. Printing, packaging machinery, food machinery, special bearings and outer spherical bearings.

4. Plastics, chemical fiber machinery, film stretching, special bearings and high-temperature bearings.

5. Fine bearings for toys, clocks, electronics, and audio-visual equipment.

6. Bearings are selected for textile, washing and dyeing, shoemaking and tobacco machinery. These bearings are small, efficient and durable, requiring high speed and minimal noise.

7. Bearings are selected for beer, beverage equipment and medical equipment.

8. Bearings are selected for crushing, ceramic machinery and fine chemical machinery. The working environment of this kind of equipment is poor, and there are many effects such as water mist, moisture, dust, acid and alkali, etc., which require strong bearing sealing, sufficient and reasonable Shanshan grease, and it is best to add grease in a timely manner.

Bearing is an important component in contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

Bearing classification: plain bearing.

Plain bearings are not divided into inner and outer rings and have no rolling elements, and are generally made of wear-resistant materials. It is often used in low-speed, light-loaded, lubricating and difficult to maintain mechanical rotating parts.

Spherical bearings. The sliding contact surface of the spherical bearing is spherical, which is mainly suitable for oscillating motion, inclined motion and rotary motion.

Rolling bearing. Rolling bearings are divided into radial bearings and thrust bearings according to the different load directions or nominal contact angles they can bear. The radial contact bearing is a radial bearing with a nominal contact angle of 0, and the radial contact bearing is a radial bearing with a nominal contact angle greater than 0 to 45. The axial contact bearing is a thrust bearing with a nominal contact angle of 90, and the thrust angle contact bearing is a thrust bearing with a nominal contact angle greater than 45 but less than 90.

According to the different load directions of the bearing, rolling bearings can be divided into two types: radial bearings and thrust bearings.

Radial bearings:

It is mainly used for rolling bearings bearing radial loads, and their nominal contact angles are in the range of 0° to 45°.

Thrust ball bearings: can withstand axial loads, but not radial loads. There are two types of bearings: flat base cushion type and spherical cushion type.

According to the different load directions of the bearings, rolling bearings can be divided into two types: "radial bearings" and "thrust bearings".

The bearing direction of the drag bearing is different, and the rolling bearing can be divided into radial bearing and thrust bearing.

There are several types of radial plain bearings, such as split type, integral type, flange type and self-positioning type, and the bearing cover of split bearing can be opened to facilitate the loading of the journal.

The integral bearing has a simple construction.

The mounting surface of flanged bearings is perpendicular to the bearing centerline.

Self-positioning bearings automatically adjust the axis to accommodate the deflection of the shaft.

The integral type is characterized by the fact that the gap between the shaft and the bearing pad cannot be adjusted, the structure is simple, and the journal can only be assembled and disassembled from the shaft end.

The split type is characterized by the fact that the gap between the shaft and the bearing can be adjusted, making it easy to install.

The self-positioning type is characterized by the fact that the pads can be properly placed in the housing to accommodate the deflection of the shaft during bending.

Monolithic, split. General plain bearings, self-lubricating plain bearings.

There are different types of bearings according to the different use environment, and the main ones are as follows:

Deep groove ball bearings, e.g. 6000, 6200, 6300...

Tapered roller bearings, e.g. 30205, 32005....

Cylindrical roller bearings, e.g. NU205

Spherical roller bearings, e.g. 22205

Angular contact ball bearings, e.g. 7210

Double row ball bearings, e.g. 4207

Self-aligning ball bearings, e.g. 1206

Thrust ball bearings, e.g. 51120

Outer spherical ball bearings, e.g. UC208

Needle roller bearings, e.g. HK1512

Spherical ball bearings, e.g. GE20ES

There are a few other special bearings.

The specific characteristics are also different according to different use environments.

Check the bearing manual, the bearing is divided into 1, spherical bearing 2, spherical roller bearing 3, tapered roller bearing 4, thrust ball bearing 5, deep groove ball bearing 6, angular contact bearing 7, cylindrical roller bearing seven categories, there are too many characteristics, you only have to check the bearing manual.