Tapered roller bearings have conical inner ring and outer ring raceway, and tapered rollers are arranged between them. All the projection lines on the cone surface are clustered at the same point in the bearing axis. This design makes tapered roller bearings particularly suitable for composite (radial and axial) loads. The axial load capacity of the bearing is mostly determined by the contact angle α, and the higher the angle of the α, the greater the axial load capacity. The angle size is expressed by the calculated coefficient E, the larger the E value, the greater the contact angle, the greater the suitability of the bearing to withstand axial load.
Tapered roller bearings are usually separate, that is, the cone inner ring component consisting of the inner ring of the roller and cage assembly can be installed separately from the cone Outer Ring (outer ring).
Tapered roller bearings are widely used in automobiles, rolling mills, mining, metallurgy, plastic machinery and other industries.
Tapered roller bearings are the secondary cause of the emergence of a mark in the process of installation: The bearing is being installed and assembled in the inner ring, the outer ring is askew, or maybe it is the emergent load in the process of assembly and assembling, eventually forming the bearing.
In the installation of tapered roller bearings in accordance with the work of the code to stop, to not form a lot of achievements, such as the form of the device or the method does not, it will form the bearing of the raceway surface and bone surface to form the emergence of a line of bearing scars. The device of deep groove ball bearing indirectly reflects the precision, stature and function of the bearing when it is used.
Although the quality of tapered roller bearing is good, but the rolling bearing is a precision part, its use must be carefully carried out accordingly. No matter how high-performance the bearings, if used improperly, will not get the expected high performance. The following are the precautions for bearing use:
(1) Keep the tapered roller bearing and its surroundings clean.
Even small dust, which is invisible to the eye, can have a bad effect on the bearing. So, keep the surrounding clean so that the dust does not invade the bearing.
(2) Use carefully.
In the use of a strong impact of tapered roller bearings, will produce scars and indentation, the cause of the accident. Serious case, will crack, break, so must notice.
(3) Use proper operation tools.
Avoid replacing with existing tools, and you must use the right tools.
(4) To pay attention to the rust of tapered roller bearings.
When the bearing is operated, the sweat on the hand becomes the cause of the rust. Pay attention to clean hands operation, preferably with gloves.
Tapered roller Bearings The use of hearing to identify irregular operation is a very common method, examples such as the use of electronic stethoscope to find that 10 of abnormal noise is experienced operators. If a bearing is in good working condition, it emits a low whine sound, if a sharp hissing tapered roller bearing, creak and other irregular sound, usually indicates that the bearing is in bad condition.
1, Tile surface corrosion: The concentration anomaly of nonferrous metals was found in the spectral analysis, and there were many submicron grade wear particles in the iron spectrum, such as excessive water content and acid value.
2, the axle neck surface pulls the wound: The iron spectrum has the iron to cut the abrasive grain or the black oxide particle, the metal surface has the tempering color.
3, the surface corrosion of the axle neck: The spectral analysis found that iron element concentration anomaly, iron spectrum has many submicron particles of iron, lubricating oil water or acid value exceeded.
4, Surface tensile injury: Iron Spectrum found in the cutting abrasive grains, abrasive components of non-ferrous metals.
5, the back fretting wear: The spectral analysis found abnormal iron concentration, iron spectrum has many submicron wear particles, lubricating oil moisture and acid value anomalies.
Under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced, and the oil film also has a certain vibration absorption ability.
The sharp creak noise may be caused by improper lubrication. Improper bearing clearance can also cause metal sound. Tapered roller bearings in the outer ring of the track will cause vibration, and the smooth and crisp sound, if the installation of the percussion caused by the damage will also produce noise, this noise will vary with the speed of the bearing. If there is intermittent noise, it means that the rolling piece may be damaged, tapered roller bearings This sound occurs when the damaged surface is rolling out of date, the bearings in the case of contamination often cause hissing sound, serious bearing damage will produce irregular and huge noise.
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