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Spherical roller bearing damage which several performance?
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| Time：2016.11.04 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Spherical roller bearing is a spherical outer ring raceway, so it has self-aligning performance, can compensate for the bending deformation of the shaft and the bearing installation parts of the coaxiality of the error, the adjustment range is generally 1 ° ~ 2.5 °.
Spherical roller bearings are one of the most able to withstand heavy loads or shock loads of bearings, mainly to bear a larger radial load, followed by a certain amount of axial load.
Spherical roller bearings with cylindrical bore and conical two. K means that the bore taper is 1: 1 2. K30 means that the inner taper is 1:30. W33 indicates that there is a lubricating oil groove and three lubricating oil holes in the bearing outer ring.
The inner hole for the conical spherical roller bearings, installed in the cylindrical shaft taper according to the different holes, with the corresponding taper to be installed with the adapter sleeve. The taper is 1:12 more commonly used.
In fact, there are a variety of self-aligning roller bearing retainer, C said symmetrical roller, punch holder; CA said symmetrical roller, the overall holder; MB said inner ring wall, symmetrical roller, Body retainer. Even if the best protection of the bearings in the work will inevitably damage.
As for the reason, it is considered that the lubricant is insufficient, not suitable for the defects of the oil discharge structure, the invasion of the foreign matter, the installation error of the bearing, the damage of the bearing of the roller bearing, Shaft deflection is too large, there will be these reasons overlap.
1, cavitation
Spherical roller bearing cavitation is a solid surface in contact with the liquid and the relative movement of the surface damage generated by the form. When the oil in the low-pressure area of the oil film, the oil will form bubbles, bubbles move to the high-pressure zone, the bubble under pressure bubble collapse, the collapse of the moment have a great impact and high temperature, solid surface in this The repeated impact of the impact, the material fatigue occurs off, so that the friction surface of small pits, and then develop into a sponge-like scars. Heavy load, high speed, and the load and speed changes in the larger sliding bearings, often cavitation;
2, fluid erosion
Spherical roller bearing fluid erosion is the fluid violent impact on the solid surface will cause fluid erosion, so that the surface of the solid-like point-like scars, the damage surface is smooth;
3, electrical erosion
Spherical roller bearing electrical erosion is due to electrical or electrical leakage in the bearing friction between the surface of the spark generated in the friction surface on the point-like scars, which is characterized by reciprocating injury in the hard surface of the journal.
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