We can provide samples for free

Send your needs: market@bearingsupplier.cn

Selection Of Low Noise SKF Imported Bearings
Selection Of Low Noise SKF Imported Bearings
2021-12-11
NTN Bearing Appearance Inspection Items And Selection Considerations
NTN Bearing Appearance Inspection Items And Selection Considerations
2021-12-11

How To Select FAG Bearing Type

 

First, size constraints.

Generally, the space where fag bearings can be installed is limited. In most cases, the shaft diameter (or fag bearing inner diameter) is limited by mechanical design or other design. Therefore, the selection of fag bearing type and size is determined according to the inner diameter of fag bearing. Therefore, the main dimension tables of standard fag bearings are prepared according to the international standard inner diameter dimensions.

 

Standard fag bearings have various sizes and forms, and standard fag bearings are used in mechanical device design (this is designed to make FAG bearings easy to purchase. Here’s a digression. Some FAG bearing catalog models do have some, but some non-standard FAG bearings are not available in Chinese mainland, and sometimes futures will be very long time, so when FAG bearing is selected, the cost of time and the cost of later replacement) should be considered. The load of fag bearing and the load applied on fag bearing are changeable in nature, size and direction. Generally, the rated basic load is shown in the size table. However, axial load and radial load are also important factors for selecting suitable fag bearing. When the sizes of ball and needle roller bearing are the same, needle roller fag bearing usually has high load capacity and bears large vibration And impact load.

How To Select FAG Bearing Type
Second, speed.

The allowable speed is determined according to fag bearing type, size, accuracy, cage type, load, lubrication mode, cooling mode and other factors. The fag bearing table lists the allowable speed of standard precision fag 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, FAG bearing tolerance.

 

The dimensional accuracy and rotation accuracy of fag bearings are based on ISO and JIS standards. For machines requiring high precision and high-speed operation, it is recommended to use fag 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. Rigidity, when the contact surface of rolling element and raceway of fag bearing is compressed, it will produce elastic deformation. Some machines need to minimize elastic deformation. The elastic deformation of roller fag bearing is smaller than that of ball fag bearing.

 

In addition, in some cases, FAG bearings need to be preloaded to increase rigidity. This procedure is usually used for deep groove ball bearings, centripetal thrust ball bearings and tapered roller bearings. Inner and outer ring offset, shaft bending, tolerance change of shaft or fag bearing housing, and matching error will lead to inner and outer ring eccentricity. In order to prevent excessive eccentric angle, self-aligning ball bearing, self-aligning roller bearing, or self-aligning bearing seat are better choices. Voice frequency and torque, rolling bearings are manufactured according to high-precision standards, so voice and torque are small. Deep groove ball bearings and cylindrical roller bearings are suitable for occasions with special requirements for low noise and low torque.

 

Installation and disassembly. Some applications require frequent disassembly and installation to ensure regular inspection and maintenance. Fag bearings with separate inner and outer rings, such as cylindrical bearings, needle roller bearings and conical bearings, are very suitable for this occasion. With the help of the shaft sleeve, the installation procedure of the taper hole self-aligning ball bearing and self-aligning roller bearing is also simplified.

(1) Before fag bearing installation, proper measuring tools shall be used to check the machining quality of shaft, seat hole and relevant parts (such as dimensional accuracy, shape accuracy and surface roughness) according to the technical requirements on the design drawing.

(2) If there are bumps, burrs, rust spots or solid particles (such as wear debris, sand and soil) on the assembly surface of the shaft and bearing seat hole, it will not only make the installation of fag bearing difficult and the installation position incorrect, but also the solid particles will play a grinding role if they fall into fag bearing, and the working surface of fag bearing will be abraded or scratched when fag bearing rotates, Therefore, it must be carefully checked before installation. If the above defects are found, they should be corrected. For example, use an oil file to remove burrs, raised bumps and rust spots, and polish them with fine abrasive cloth, such as cleaning solid particles, dirt, etc.

(3) The assembly surface shall be cleaned with clean gasoline, kerosene, toluene or xylene solution, wiped dry with clean cloth, and then coated with a thin layer of lubricating oil, which can make the installation and operation more convenient.

(4) Before installation, open the fag bearing package, immerse it in the above gasoline and other liquids, and rotate it gently by hand. Ensure that the sealing oil on the cage, rolling element and raceway surface is completely cleaned.

(5) When cleaning a large number of fag bearings, first scald them with hot engine oil with a temperature of 90 ~ 100 ℃ to melt the sealing oil. At the same time, dig out all the old oil with a seamless tool without falling debris, then scald them for a few minutes, then rinse the engine oil with kerosene, and then clean them with gasoline. After cleaning, wear film gloves and put the bearing on a clean cloth or paper on the workbench to dry.

(6) Note that the bearing with seal can not be cleaned by this method, and the inside of the seal should be kept as it is and can not be cleaned.

Chat with us
Chat with us
Questions, doubts, issues? We're here to help you!
Connecting...
None of our operators are available at the moment. Please, try again later.
Our operators are busy. Please try again later
:
:
:
:
Have you got question? Write to us!
:
:
This chat session has ended
Was this conversation useful? Vote this chat session.
Good Bad