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"Bearing Corp"
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All of our ball roller bearing rings are with sound heat treatment, so that make sure it steady.
We are a bearing corp with 10 years’ experience about high precision bearings.
You are warmly welcome to visit our bearing corp, which locates in Luoyang, China.
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"Bearing Corp"
BlogCan choose any kind of suffix with two bearings |
09-10 |
Single-row angular ball bearings suffix knowledgeB 40oC contact angleE high load capacityA bearing the rounded edges are the sameY copper punched retainer , design changes , such as with additional numbers to distinguish : Y1M Machined brass cage . Cage design or material change with additional numbers to distinguish such as : M2J no liquid hard copper punched retainer . Cage design or material change with additional numbers to distinguish , such as : J1F made ??of copper or ductile iron machine cut cage. Cage design or material change with additional numbers to distinguish , such as : F1P glass fiber reinforced plastic mold injection cage./ P5 dimensions and rotational accuracy considerably ISO tolerance 5 ( more than P6 precision )/ P6 dimensions and rotational accuracy considerably ISO tolerance 6 .CA can be common paired single row angular contact ball bearings. With this letter bearing can be arbitrarily paired back to back , face to face or in the same direction in series. In back to back or face to face , the bearing group has a small amount of axial internal clearance .CB can be common paired single row angular contact ball bearings, bearing with this code can be arbitrarily paired back to back , face to face or in the same direction in series. In back to back or face to face , the bearing group axial internal clearance greater than CA.CC can be universal paired single row angular contact ball bearings, with such suffixes can choose any two bearings , paired back to back or face to face configuration . Install the rear bearing set with a light preload .G for general paired single row angular contact ball bearings. Can choose any kind of suffix with two bearings , paired back to back or face to face or tandem configuration. In back to back or face to face ,ball bearing a small group of internal axial clearance .GA for universal paired single row angular contact ball bearings. Can choose any kind of suffix with two bearings , paired back to back or face to face configuration . Installed by the rear bearing set with a light preload .GB for universal paired single row angular contact ball bearings. Can choose any kind of suffix with two bearings , paired back to back or face to face configuration . Installed by the rear bearing preload group large than GA .GC for universal paired single row angular contact ball bearings. Can choose any kind of suffix with two bearings , paired back to back or face to face configuration . Installed by the rear bearing preload group than GB large .
Rolling after a failure to properly handle |
08-30 |
Because of its small rolling friction , high mechanical efficiency , and low prices , easy to replace , lubrication simple , and thus in brick machinery applications is very broad.
One , bearing the most common failure is a serious fever :
If you are new clothes or clean oil change after just one run that is rapidly warming , severe fever , and there was no running unusual sounds or vibrates, the reason is most likely add too much grease should be appropriately raise a certain number of grease can.
If the fever appeared in Rolling has been running for some time after contact with the metal bar to listen to the noise reoccurred dry friction , percussion or irregular , it may be oil, or unclean , it could be a rolling bearing partially damaged , should be taken apart cleaned for oil or removable bearings.
Two , which occurs when the rolling bearing fault repair :
( 1 ) a large number of large factories are using the same type of bearing failure mainly in the form of its rolling bearing corp surface wear, fatigue or fretting abrasion , especially damaged parts mostly cage or rolling , while still ring or gasket repair value ;
( 2 ) large and extra large bearing on the brink of failure or having lapsed and no significant damage parts , or precious bearings must seek to extend its useful life is ;
( 3 ) some really difficult to buy into the bearing varieties , after the failure had no spare parts and repair , especially imported bearings ;
( 4 ) bearing a slight injury, such as inventory produced during the mild water, rust , and transport process produces a slight micro abrasion, such cases repaired easily and gesture .
Third, when the rolling bearing which defects occur when parts must be renewed :
( 1 ) corrosion. Bearing outage damp or moored in the water , so that the rolling element raceway surface or rust, etc. appear corroded .
( 2 ) indentation . When a hard object into the raceway , often in the raceway raceway surface or pressed out of the pit . Appear not only running noise or crash, excessive vibration and bearing pits will produce severe fever.
( 3 ) Bearing Figure rupture. In addition to manufacturing reasons, if the size is too large axis of interference , improper assembly will burst and damage the bearing inner and outer rings , and the thrust bearing moving coil is pushed rupture.
( 4 ) the raceway surface fatigue stripped. If used improperly, will rapidly accelerate this normal wear and tear .
( 5 ) cage fracture . Basically the material and manufacturing problems . Sometimes , the installation wounded cage, too early will cause breakage .
( 6 ) rolling rupture. Run there will be a greater noise, vibration and even , mostly belonging to materials or improper heat treatment .
( 7 ) Current corrosion. In welding , if the current through the bearing , fever produce sparks, so local raceway body burns. Therefore, make sure the welding welding of the " ground" to make close to the welding point , do not allow the welding current through the bearings.
( 9 ) badly worn overrun . Running serious fever, abnormal sound and vibration , because then the gap has increased . When the dust , surface scratches , wear more quickly.
Rolling operation and fault characteristics of pre-and post |
08-30 |
One , bearing operating characteristics : regularity and good reproducibility.
Second, in the initial period of normal bearing corp will have the following characteristics: 1 vibration and noise are relatively small, but some scattered spectrum ; 2 amplitude are small .
Third, the high-quality bearing after a period of normal operation ( Rolling use interim ) Features: maintain a certain level of vibration and noise , spectrum is very simple, appears only one , two multiplier. Bearing condition is very stable, into a stable working period .
Fourth, the use of high-quality bearing post :
1 . Initial failure Performance: Rolling vibration and noise begins to increase , sometimes different sound , but the change vibration increases more slowly this time, bearing kurtosis value starts suddenly reaches a certain value .
(2) Late fault : Bearing kurtosis value starts to drop rapidly , and close to normal , while the vibration and noise begins to significantly increase its growth began to accelerate dramatically , vibration when the vibration exceeds the standard , its bearing kurtosis values began to rapidly increase when both exceed vibration standards, and kurtosis values are also more than normal .
Bearing fatigue failure is a failure of the surface of the form |
08-26 |
Sound that is generally bearing raceway sound with other sounds. Greater rigidity of the roll bearings seat, roll sound pressure level is lower. If the radial clearance is too small, the rolling sound pressure level and the main frequency will decrease as the radial clearance increases dramatically.Bearing fatigue failure is a failure surface forms, mainly for fatigue crack initiation, propagation and fracture processes in alternating load faults arising under long-term effects of the metal. One, reason: overall eccentric bearing low precision approach: use specified levels of precision bearings Two reasons: Spindle bore different heart bent or box method: Fix spindle or cabinet Three reasons: belt too tight: Adjust the belt so that the appropriate tightness Four reasons: poor lubrication Methods: provide grade lubricating material and properly cleaned 5 reasons: the low quality assembly methods: improving the quality of assembly 6, reason: bearing housing laps: Replace worn bearings and related components 7, the axial force is too large Methods: cleaning, alignment ring seals the gap between the requirements of 0.2 ~ 0.3mm, correct impeller balance hole diameter and the checksum value of static equilibrium 8, the bearing damage: replace bearings Control raceway sound methods are: selection of low-noise bearings that waviness small bearings, judicious selection of the conditions of use. Raceway sound often affect the entire mechanical noise reduction raceway sound can reduce the overall mechanical noise.