The same brand, the same lubrication, the same load roller bearings and ball bearings function, and difference?
I. the similarities between ball bearings and roller bearings: they are all high kinematic pairs; the difference is that the ball bearings and roller bearings are kinematic pairs, respectively, point contact and line contact. 2. ball bearings and roller bearings are rolling bearings, with rolling bearings of the characteristics of performance. Two, rolling bearing characteristics, performanceAdvantage：1. small frictional resistance, low power consumption, high mechanical efficiency, easy to start. The 2. size standard, has the interchangeability, convenient installation and disassembly, convenient maintenance. 3. compact structure, light weight, axial size is more narrow. 4. high precision, high speed, small abrasion, long service life. 5. part of the bearing with self-aligning properties. 6. suitable for mass production, stable and reliable quality, high production efficiency and disadvantages:Noise. Structure of the 2. bearing seat is more complex. The 3. cost is higher.
The same brand, the same lubrication, the same load has been confirmed, the ball bearings than roller bearings in the volume and size of the installation is much larger, the ball diameter is also much larger than the column diameter.Therefore, at the same speed, the ball bearing is faster than the roller of the roller bearing, so the ball bearing is easier to be worn out, and the roller bearing relative to the limit speed can be higher;Secondly, the rated load depends largely on the ball or column contact surface due to contact column line contact ball point, so the contact area of the elastic deformation of the calculus after the incremental ratio is greater than the ball column, so it is the first ball wear, considering the characteristics of fever, and roller bearing limit rotational speed can be relatively higher;In summary, the ball bearings wear first, and the roller bearings can be higher relative to the limit speed.
In the same size:Speed: almost the sameRadial load: the cylinder is larger than the ball bearingIn accordance with general but under axial cylinder axial load direction or axial load (individual models can withstand axial load, bidirectional) is generally used in the free end of the shaft; ball bearings can withstand two-way load at the fixed end.When you say the same brand, the same lubrication and the same load, the life of cylindrical bearings is greater than that of the ball bearings.But you must be aware that these two types of bearings may be interchangeable, but they are often used in combination.If necessary, you can give me a message to help you type selectionThe same size cylindrical bearings and ball bearings: cylindrical bearings friction torque, speed almost equal. Cylindrical bearings limit speed is slightly smaller.About wear: because his bearing is greater than the ball, so the same load, certainly cylindrical bearing life expectancy. Life is generally related to speed, load, and environment.I hope you refer to the sample design.You can definitely tell: you should use ball bearings. Because your load is too smallI haven't seen the ball as long as you do. A small number of see, that is, buy Bearings demolition. You'd better get in touch with their office. Please look at my space. There is an import brand office in china.Not advertising. They don't do business. Your order will be sent to your nearest dealer.Finally, suggest that: you recommend using domestic P2 class steel ball, than the average quality of imported much better, the price may be high.Look, you know you are layman, hardness is the same, the quality of the steel ball to this grade, that is, the accuracy of the. P2 grade steel ball, as long as the ground will be scrapped, because this fall, the accuracy is not enough P2
Three, rolling bearings, rolling bearings, referred to as bearings, machinery and industrial equipment and civilian use of a wide range of strict requirements of the basis of matching parts, known as the mechanical joints. It can be said that as long as there is a rotating place, there are bearings, because the use of a wide range, determines the variety and complexity of bearing varieties. Due to strict requirements, the quality and performance of the bearings have been decided. In industry, agriculture, national defense, science and technology and civilian equipment (such as your computer hard disk, CD-ROM and cars) in various areas of the host are useful to the bearing, the precision, performance, life, reliability and economical indexes are closely linked with the bearing, and the development of bearing industry the relationship between the manufacturing level of major technical equipment in China and exports of machinery and equipment capacity. Bearings are playing a more and more important role in national economy and national defense construction.
