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the article citations: time:2014-12-16 11:02:43
mainly bear radial primarily diameter, the axial load. bearing capacity depends on the angle of the outer ring raceway, the greater the angle, the greater the carrying capacity. the separated type bearing is a bearing, according to the bearing the number of columns of the scroll body can be divided into single row, double row and four row circular cone roller bearings. single row tapered roller bearing clearance to users in the installation adjustment; double row and four row circular cone roller bearings clearance has according to user requirements for a given when the products leave the factory, not the user.
have a conical taper roller bearing inner ring and outer ring raceway, the tapered roller are arranged in between. all projection line on the surface of the cone axis bearing the same points together. this design make the taper roller bearing is especially suitable for composite (radial and axial load. bearing axial load capacity is mostly determined by the contact angle alpha; alpha angle is larger, the higher axial load capacity. angle size by calculating coefficient of e; e value, the greater the contact angle, the greater the bearing axial load of the greater applicability.
are usually separated type, that is, by inner ring with roller and cage components of cone inner ring components can be installed separately with cone outer ring (outer ring).
tapered roller bearing is widely used in automotive, rolling mill, mining, metallurgy, plastics machinery and other industries.
tapered roller bearings are device in the process of the secondary reason is: the emergence of scars that bearing are equipment, assembly, outer ring and inner ring skew; or it is in the process of the device and assembly of emerging from the front load, eventually forming bearing scars that are emerging.
taper roller bearings are device should work in accordance with the specification when to stop, do not form many achievements, such as device or method not when, in the form of will form the bearing raceway surface formation and bone surface bearing linear scars that are emerging. deep groove ball bearing device for indirect reaction with the precision of the bearing when using, stature and functions.
although quality of tapered roller bearing and so on various aspects are good, but the is precision components, its use should be measured accordingly. no matter how high performance bearing use, if use undeserved, will not get the desired performance. about the use of the bearing has the following several matters needing attention:
(1), keep the tapered roller bearing and the surrounding clean.
even the eyes can't see the little dust, will also bring bad influence to the bearing. so, keep the surrounding clean, dust from invading bearing.
(2), used carefully.
strong impact in use for tapered roller bearing, will produce scar and creasing, become the cause of the accident. severe cases, can crack, fracture, so must pay attention to.
(3), using the appropriate operating tools.
avoid to existing tools to replace, must use the appropriate tools.
(4), to pay attention to the corrosion of tapered roller bearing.
operation of the bearing, hand sweat will become rusty. pay attention to the operation with clean hands, it is better to try to bring gloves.
using the hearing to identify irregular operation is a very common method, examples with the aid of electronic stethoscope to check that a certain parts of abnormal noise was experienced operator use. if the bearing is in good operation condition will be low purring sound, if a sharp hiss sound taper roller bearings, make sound, usually said bearings and other irregular in poor operation condition.
1, tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; iron spectrum appeared a lot of non-ferrous metal components in sub-micron wear particles; lubricating oil excess moisture, acid value exceeds bid.
2, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint.
3, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint.
4, surface strain: iron spectrum found cutting abrasive, abrasive ingredients for non-ferrous metal.
5, tile back micro wear: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum wear submicron particles, lubricating oil moisture and acid value anomalies.
under the condition of fluid lubrication, sliding surface is lubricating oil without direct contact, also can greatly reduce the friction loss and wear of surface oil film also has a certain vibration absorbing ability.
high-pitched squeaky noise may be caused by improper lubrication. inadequate bearing clearance can cause metal sound. tapered roller bearing outer ring grooves on the tracks can cause vibration, and lead to sound like the coo of a smooth, if because of the installation caused by the striking scar also can produce noise, the noise will be along with the bearing rotating speed of high and low. if there is intermittent noise, said rolling parts may be damaged, tapered roller bearing this voice is happens when the damaged surface is rolled out, bearing inner if pollutants often causes hissing sound, serious damage of bearing can produce irregular and big noise.
is can check by listening, but usually at this time has arrived bearing must be replaced immediately. therefore, good methods such as using such as electronic condition monitoring instrument, the workings of the tapered roller bearing diagnostics bearing in advance.
