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Tapered roller bearings role and use matters

Author:Liaocheng Zhongrui Bearing Fittings Co., Source:http://www.lqzhongrui.com/ Time:2013-10-18 11:49:55 frequency:

    Tapered roller bearings are mainly exposed to the radial diameter, axial load. Load bearing capacity depends on the angle of the outer ring raceway angle greater carrying capacity. These bearings are separable bearings, rolling bearing according to the number of columns into single row, double row and four-row tapered roller bearings. Single row tapered roller bearing clearance to be adjusted during installation; double row and four row tapered roller bearing clearance in the factory according to user requirements given, users do not need to be adjusted.

    Tapered roller bearings have tapered inner and outer ring raceways, tapered rollers are arranged between the two. All conical surface projection lines are a little get together with the bearing axis. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. Most of axial load bearing capacity is determined by the contact angle α; greater the angle α, the higher the axial load capacity. Angle size calculation factor e; e value, the greater the contact angle, bearing axial load greater applicability.

    Tapered roller bearings are usually separated type, that is with roller and cage assembly of components of the inner cone and cone outer (outer) installed separately.

    Tapered roller bearings are widely used in automotive, mill, mining, metallurgy, plastics machinery and other industries.

     Tapered roller bearings are devices emerged in the process of scars secondary reason is: Bearing is the device, when the emergence of the inner assembly, outer skew; Or perhaps devices and assembly process is the emergence of strikes in load bearing emerge eventually form scars .

     When the device is being tapered roller bearings in accordance with job specifications to stop, to not form many achievements, such as the form or way device is not when, the raceway surface of the bearing surface and the formation of Gulu emerged linear bearing scars will form. Deep groove ball bearing unit with indirect response precision, life expectancy and functional use when the bearing.

      All aspects of quality , such as tapered roller bearings are better though , but rolling bearings are precision components , its use should also be carefully carried out . No matter how high-performance bearings , if used improperly , it will not get the expected performance . Cautions about using bearings were the following :
( 1 ) , tapered roller bearings to maintain its surroundings clean.
    Even the eyes can not see the little dust will bring bad influence to the bearing . Therefore, to keep the surrounding clean so that dust will not invade bearings.
( 2 ) , careful use .
    Given in the use of tapered roller bearings strong impact , will have scars and indentations, become cause of the accident . Severe cases, crack, fracture, it must be noted .
( 3) using the appropriate operating tool .
    Avoid existing tools instead , you must use the right tools .
( 4 ) , pay attention to the tapered roller bearing corrosion.
     When operating the bearing , the hands sweat will become rusty reasons. To note with clean hands operation , the best possible wear gloves .
     Tapered roller bearings use hearing to identify irregular operation is a very common method , examples such as the use of electronic stethoscope to feel a part of the investigation abnormal noise is an experienced operator. If the bearing is in good running condition emits low whining sound , if a sharp hissing sound tapered roller bearings , squeaky voice and other irregular sounds , usually means the bearings are dysfunctional situation .
1, the tile surface corrosion: spectral element concentrations found in non-ferrous metal anomalies ; iron spectrum appeared submicron particles of many non-ferrous metal components wear ; lubricants excessive moisture , acid exceeded.
2, the journal surface strain : There Ferrography cutting abrasive or black iron oxide particles , the presence of temper color metal surface.
3, the journal surface corrosion: spectral analysis found that abnormal concentrations of iron , iron spectrum , there are many sub-micron particles of iron components , excessive moisture or oil acid value exceeded.
4, the surface strain : iron spectrum found cutting abrasive , abrasive component of non-ferrous metals .
5 , tile back fretting wear : spectral analysis found abnormal iron concentration , iron spectrum , there are many iron content submicron wear particles , water and oil acid value exception.
    In liquid lubrication conditions , the sliding surfaces are separated and not in direct contact with oil , but also can greatly reduce the friction loss and surface wear , the film also has a certain vibration absorption capability
Sharp squeaky noise may be due to inadequate lubrication caused . Inappropriate bearing clearance can also cause metal sound. Tapered roller bearing outer ring dent on the track will cause vibration , resulting in smooth and crisp sound , if caused due to installation percussion scars will produce noise, this noise will level with the bearing speed varies . If there are intermittent noise , then rolling elements may be damaged , tapered roller bearings when this sound occurred in the damaged surface is rolling out of date, if the bearing contaminants often cause hissing sound , serious bearing damage will irregular and loud noise .
     Bearing damage can certainly be perceptible by hearing , but usually at this time has come to bearings must be replaced immediately unavailable . Therefore , it is preferable to use a method such as electronic monitoring equipment status , a pre- tapered roller bearings of the bearing off the functioning rash .

  

     

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