The correct selection and use of cross roller bearings
How to choose the types, types and sizes of bearings are diverse. In order to make the mechanical device play the expected performance, it is very important to choose the most suitable cross roller bearing. In order to select a crossed roller bearing, it is necessary to analyze many factors, research and evaluate the procedures for selecting a crossed roller bearing from various angles. There are no special specifications, but the general sequence is as follows:
1. Grasp the operating conditions of mechanical devices and crossed roller bearings, etc.
2, clarify the requirements for crossed roller bearings
3. Select the type of cross roller bearing
4. Select the arrangement of cross roller bearings
5. Select the size of the cross roller bearing
6, select cross roller bearing specifications
7、Select the installation method of cross roller bearing
Cross roller bearing operating conditions and environmental conditions
Correctly grasping the location of the imported cross-roller bearing in the mechanical device and the conditions of use and environmental conditions are the prerequisites for choosing a suitable cross-roller bearing. For this, it is necessary to obtain the following data and information:
1. Function and structure of mechanical device
2, the use part of the cross roller bearing
3, cross roller bearing load (size, direction)
4, rotation speed
5. Vibration, shock
6. Crossed roller bearing temperature (ambient temperature, temperature rise)
7. Ambient atmosphere (corrosiveness, cleanliness, lubricity)
The correct use of crossed roller bearings is a reliable guarantee for reducing crossed roller bearing failures and prolonging the life of crossed roller bearings. Its contents include correct installation and reasonable lubrication. The following describes the requirements for the use of crossed roller bearings.
1. Disassembly and assembly of cross roller bearings
Crossed roller bearings should be cleaned before installation. When installing, use special tools to press in the auxiliary bearing straight and evenly. Do not strike with a hammer. It is especially forbidden to strike directly on the cross roller bearing. When the cross-roller bearing race is loose with the seat hole, the seat hole should be repaired or the cross-roller bearing should be replaced. Do not use pitting or pad copper on the mating surface of the cross-roller bearing. When disassembling the cross roller bearing, use a suitable puller to pull out the cross roller bearing. Do not knock the cross roller bearing with a chisel, hand hammer, etc.
2, lubrication of crossed roller bearings
Commonly used lubricants for crossed roller bearings are lubricating oil and grease. When the peripheral speed of the shaft is less than 4-5m/s, or the parts on the car that cannot be lubricated with lubricating oil, grease lubrication is used. The advantages of grease lubrication are that the sealing structure is simple, the grease is not easy to lose, and it is not affected by temperature. It can be used for a longer time with one grease.
The advantage of lubricating oil is that it has low frictional resistance and can dissipate heat. It is mainly used for crossed roller bearings with high speed and high working temperature. The brand of lubricating oil should be selected according to the requirements of the car manual, and replaced in time after the car maintenance cycle. After the old oil is discharged, the mechanism should be cleaned before adding new oil. The fuel should be added to the specified line or flush with the fuel filler (It depends on the specific structure and requirements of the car), no more.
Two problems should be paid attention to when using lubricating grease. One is to select the appropriate brand of grease according to the requirements of the car manual. For example, the cross-roller bearings of automobile water pumps are not suitable for the use of nano-grease because of its poor water resistance. The second is to add an appropriate amount of grease to the cross roller bearing. Generally, it is only suitable to fill 1/2-l/3 of the cavity of the cross roller bearing. Too much is not only useless, but also increases the running resistance of the cross roller bearing. Make it heat up and heat up. Special attention should be paid to cross-roller bearings for automobile wheels. "Empty hub lubrication" should be promoted, that is, only an appropriate layer of grease should be applied to the cross-roller bearings. Otherwise, it will not only waste and poor heat dissipation, but also lubricate The grease overflows due to heat, which may affect the braking performance.
Luoyang Yujie Industry &Trade Co.Ltd located in Luoyang City, one of the main heavy industrial bases in China.
We specialize in the production of bearings, nonstandard machinery parts, machine tools. For the bearings, we can offer cross roller bearing, slewing bearing, YRT bearing, thin section bearing, ball screw bearing, deep groove ball bearing, etc. For the nonstandard machine parts, we can produce gears, shafts, sprockets, molds, rollers, pulley, mining machine parts, etc as per customer drawing and requirements. For the machine tools, we offer CNC vertical machine center, CNC horizontal lathe, CNC gantry boring and milling machine, CNC floor type boring, and milling machine.
If you have any interests, feel free to contact us and we warmly welcome customers and friends visit us
Luoyang Yujie Industry & Trade Co., Ltd.
Tel: +86-379-80865527
Fax: +86-379-65136562
Email:sales@yujieindustry.com
ADD: Jianxi Industrial Park, Luoyang City, Henan, China
https://www.yogiemachinery.com/products
Website:https://www.yogiemachinery.com
