The specific judgment method of whether NSK bearing should be Determination Method reported for repair, that is, the specific judgment method of NSK bearing has been fully utilized and near damage is as follows:
It is a convenient and reliable method to judge the working state of NSK bearing and decide when to report for repair by using such instruments as Determination Method Ferrograph or SPM or i-id-1 NSK bearing working state monitoring instrument.
For example, when HD-1 instrument is used, when the pointer approaches the dangerous area from the warning area, and the pointer does not return after taking measures to improve lubrication, it can be determined that it is the problem of NSK bearing itself. At this time, the NSK bearing can be reported for repair before entering the dangerous area. How far away from the dangerous area to start the repair can be adjusted by experience.
Using such an instrument, we can make full use of the working potential Determination Method of NSK Bearings, report NSK Bearings for repair in time, and avoid faults. It is and economical.
In the absence of the above instruments, the operator can hold a round rod or wrench and other tools to collide with the machine shell close to the NSK bearing, shame his ears on Determination Method the tool and listen for the sound of NSK axis transmitted by the tool. Of course, it is also possible to refit the medical stethoscope.
The normal sound of NSK shaft rotation should be uniform, stable and not harsh, while the abnormal sound of NSK bearing operation has a variety of intermittent, impact or harsh Determination Method Determination Method sounds. First, get used to the normal NSK shaft carrying sound, and then you can grasp and judge the abnormal NSK shaft carrying sound.
Then, through the accumulation of practical experience, you can further analyze what kind of abnormal sound corresponds to what kind of abnormal phenomenon of NSK bearing. There are many types of abnormal sounds of NSK Bearings, which are difficult to speak and mainly rely on experience.
The tapered hole bearing can be directly installed on the tapered journal, or it can be installed on the cylindrical journal with the tightening Determination Method sleeve and disassembly sleeve as the intermediary. However, in any case, the interference of the inner ring of the tapered hole can be measured according to the reduction of the clearance of SKF Bearing.
The reduction of radial clearance is the difference between the radial clearance of SKF Bearing before and after installation. The original radial clearance of SKF Bearing shall be Determination Method measured before installation, and the clearance shall be measured frequently during installation until the radial clearance reduction corresponding to the ideal interference is achieved
The measurement of radial clearance reduction can also be replaced by the measurement of the propulsion of SKF Bearing on conical journal. For the standard taper of 1:12, the reduction of radial clearance is about 1 / 15 of the axial thrust. In this proportion, for the solid shaft, the interference of the mating surface is only 75% ~ 85%, which plays a role in expanding the inner ring.
The reduction of radial clearance of large spherical roller SKF Bearing and cylindrical roller bearing is usually measured with feeler gauge. Note that for spherical roller SKF Bearing, the radial clearance at the two rows of rollers must be measured from the two end faces respectively. Only when the clearance value at the two rows of rollers is the same, can the inner ring and outer ring be relatively positive.