7301bep skf 7301 bearing dimensions 12x37x12mm

7301BECBP 7301BECBM 7301ECP 

Super-precision, high-capacity, single row angular contact ball bearing

These super-precision, high-capacity, single row angular contact ball bearings, with 15°25° 45° contact angle, accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures.

Very high running accuracy

Very high load carrying capacity

Relatively high speed and stiffness

Installation methods and usage precautions for single row angular contact ball bearing :                      

The installation methods of angular contact ball bearings can generally be divided into three main types:

1. Back-to-back configuration, with the rear code DB

What is back-to-back configuration? Simply put, it refers to the installation method of the outer ring of the bearing facing the wide surface, or the small end of the inner ring of the bearing facing the small end face.

This is a installation method that we should frequently use, and compared to the other two methods, it has the following advantages:

① The load it bears is separated from the bearing shaft, please note that it is separated;

② Can withstand axial loads acting in two directions, but the load in each direction can only be borne by one bearing;

③ It can adapt to bearing configurations with relatively high rigidity and can also withstand overturning torque.

Combining these three advantages, it is not difficult to find that back-to-back configuration installation separates the load from the bearing shaft, which has the advantage of separating the load from the bearing and shaft. In addition, it can withstand overturning torque. If you choose the appropriate contact angle, you can imagine how much maintenance labor can be saved and how many potential equipment accidents can be avoided in actual operation?

Therefore, based on practical experience, I recommend the preferred back-to-back configuration. 14 pumps, such as angular contact bearings and deep groove ball bearings, have been used in the methanol refining zone distillation unit, and have been operating well in recent years.

2. Face to face configuration, with the postscript code DF

What is face-to-face configuration? It is the opposite of back-to-back configuration, which refers to the installation method where the large end of the bearing inner ring faces the large end face, or the narrow outer ring of the bearing faces the narrow face.

This method is also frequently used, but it does not have the advantage of back-to-back configuration. The load it bears converges towards the bearing shaft. Moreover, this configuration is not as rigid as back-to-back configuration and is not suitable for withstanding overturning torque.

3. Series configuration, with the postcode DT

What is serial configuration, as the name suggests, is to move in one direction and smoothly. We rarely use this configuration in practice.

In fact, the installation method of this angular contact ball bearing can be distinguished by placing a code after the bearing, and with the correct and reasonable installation method, the commonly used hot installation method is to heat the bearing to a suitable temperature through the bearing electric heater, and then install it immediately. This can avoid bearing deformation caused by excessive impact on the bearing, or reduced bearing life caused by asynchronous inner and outer rings, which affects the long-term operation of production.

Rolling bearings are precision components that must be assembled and disassembled in a standardized manner, otherwise their accuracy may be reduced, and even the bearings and other parts may be damaged. When assembling and disassembling, it is necessary to ensure that the rolling element is not subjected to external forces, and that the assembling and disassembling forces are symmetrical and evenly applied to the end face of the seat ring.

There are usually two methods available: one is the hot charging method, as described above; Another method is cold pressing, which is a small bearing with true interference fit. The inner and outer rings of the bearing are pressed with a special pressure sleeve to fit the bearing onto the shaft or housing.

Therefore, we must adopt the correct installation method and cannot take shortcuts or deceive ourselves, in order to prevent bearing damage caused by installation quality.

1、 Structure and characteristics of angular contact ball bearings

Angular contact ball bearing is a commonly used type of bearing, which consists of four parts: inner ring, outer ring, steel ball, and cage. This bearing has the following characteristics:

1. Large load-bearing capacity: Angular contact ball bearings have a larger load-bearing capacity than deep groove ball bearings of the same size, especially when bearing both radial and axial loads. Therefore, they are widely used in high-speed, high-precision, high rigidity, and complex load conditions.

2. Flexible adjustment: Angular contact ball bearings can adjust the relative positions of the inner and outer rings during installation, which can make their stress more uniform, have smaller deviations, and improve reliability.

3. High precision: The precision level of angular contact ball bearings is high, coupled with excellent manufacturing processes, making it very suitable for applications with high requirements such as high speed, high precision, high rigidity, high temperature, and low noise.

2、 Usage of angular contact ball bearings

1. Installation: When installing angular contact ball bearings, it is necessary to first determine the relative positions of the inner and outer rings of the bearing, then place the bearing on the bearing seat, and fix the bearing with nuts or locking rings. In addition, it is important to maintain the verticality of the bearings and axis during installation to avoid damage to the bearings caused by improper installation.

2. Lubrication: There are various lubrication methods for angular contact ball bearings, generally using grease lubrication. During use, it is necessary to regularly replace the grease and pay attention to replenishing lost lubricants to ensure the normal operation of the bearings.

3. Precautions for use: When using angular contact ball bearings, it is necessary to avoid exceeding their rated load, and also try to avoid situations such as impact, vibration, and overload. In addition, attention should be paid to changes in bearing temperature and noise, and faults should be promptly eliminated to ensure the normal service life of the bearings.

3、 The application range of angular contact ball bearings

Due to the characteristics of high precision, high load-bearing capacity, high speed, and good reliability, angular contact ball bearings are widely used in aviation, aerospace, machine tools, robots, automotive motors, electric tools, precision instruments, and other fields.

【 Conclusion 】

Through the introduction of this article, we have learned about the structure and characteristics of angular contact ball bearings, mastered the methods and precautions for using angular contact ball bearings, and understood the application scope of angular contact ball bearings. In practical engineering applications, we should choose appropriate angular contact ball bearings based on specific working conditions and assembly requirements to ensure their normal use and long service life.

Questions about SKF - single row angular contact ball bearing 7301 bearing ?                                              

For further details on this product please directly contact our sales department under shh@dmsw.com

 Our products                                                                                                                                                                

Ball Bearings

SKF

NSK

FAG

TIMKEN

          IKO

NTN

GMN