How To Select Skf Bearing Type
How To Select Skf Bearing Type
2021年12月14日
Ball Bearing
Ball Bearing
2021年12月14日

Difference Between Ball Bearing And Roller Bearing

At present, there are two camps in the automobile bearing market,

one is the roller bearings (such as the products of Huizhong company), the other is the automobile bearings produced by many foreign bearing companies such as double row angular contact ball bearings (such as SKF and fag). In fact, most foreign automobile bearings are mainly double row angular contact ball bearings, while most domestic use roller bearings. The fundamental reason is that after Volkswagen entered the Chinese market, it found that the domestic road conditions were bad, affecting the service life of the bearings, {today hot} chose roller bearings.

So what is a good ball bearing? Or roller bearings?

Let’s analyze their advantages and disadvantages:Bearing, small starting friction coefficient, stable driving at high speed and flexible steering. The disadvantage is that it is not resistant to impact and is not suitable for complex road conditions. Roller bearing, The bearing load is in line contact (different from the point contact of ball bearing), with strong impact resistance and strong road adaptability.

Difference Between Ball Bearing And Roller Bearing

Therefore, it has the reputation of Volkswagen mulberry car running all over the world.

However, it is obvious that it causes the sluggish feeling of starting and sliding, which inevitably makes people who pay more attention to the sense of control feel dissatisfied. There is also the increase of fuel consumption, although these are difficult to be noticed.
It is suggested that ball bearings should be used when the road conditions are satisfactory in some large and medium-sized cities in China. However, pay attention to the choice of ball bearings. Forged bearings must be used.。

How to select SKF Bearing type and type

When selecting SKF bearings,

we should select whether SKF bearings meet our mechanical application range according to the size, specification and speed of SKF bearings. Here is a simple analysis: First, size constraints. Generally, the space where SKF bearings can be installed is limited. In most cases, the shaft diameter (or SKF Bearing inner diameter) is limited by mechanical design or other design. Therefore, the selection of SKF Bearing type and size is determined according to the inner diameter of SKF Bearing. Therefore, the main dimension tables of standard SKF bearings are prepared according to the international standard inner diameter dimensions.

Standard SKF bearings have a wide range of sizes and forms,

Standard SKF bearings are used in the design of mechanical devices (this is designed to make SKF bearings easy to purchase. Here’s a digression. Some SKF bearing catalog models do have some, but some non-standard SKF bearings are not available in Chinese mainland, and sometimes futures will be very long time. So when SKF bearing is selected, the cost of SKF and the load of SKF replacement should be considered. The load applied to SKF bearings will be very high. , its nature, size and direction are changeable. In general, the rated base load is shown on the dimension table.

However, axial load and radial load

are also important factors in selecting suitable SKF bearings. When the ball and needle roller SKF bearings have the same size, needle roller SKF bearings usually have high load capacity and bear large vibration and impact loads. Second, speed. The allowable speed is determined according to the type, size, accuracy, cage type, load, lubrication mode, cooling mode and other factors of SKF Bearing. The SKF Bearing table lists the allowable speed of standard precision SKF Bearing under oil lubrication and grease lubrication.

Generally, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings

are suitable for high-speed operation. Again, SKF Bearing tolerance. The dimensional accuracy and rotation accuracy of SKF Bearing are based on ISO and JIS standards. For machines requiring high precision and high-speed operation, it is recommended to use SKF bearings with precision of grade 5 or above. Deep groove ball bearings, centripetal thrust ball bearings or cylindrical roller bearings are suitable for machines with high operation precision. Rigid, when the contact surface of the rolling element and raceway of SKF Bearing is compressed, it will produce elastic deformation. Some machines need to minimize elastic deformation. Roller bearings produce less elastic deformation than ball bearings.