IKO Roller Bearing Gasket Installation And Precautions
IKO roller bearing installation seals are mainly to prevent grease leakage or foreign body intrusion, resulting in bearing damage and other problems. China Bearing Network shares the installation of IKO roller bearing seals and related precautions. Eric Bearing Ltd have many kinds of IKO bearings in stock , best price with fast delivery :
Installation of IKO roller bearing gasket
When inserting the shaft, chamfering the end face of the shaft can prevent lip damage during insertion. If the end face of the shaft cannot be processed, use a mounting bush.
When pressing the gasket into the bearing seat, do not directly strike the gasket, but use a jig tool to gradually press in. In order to prevent early wear and heat generation of the gasket part .
Matters needing attention when using gaskets for IKO roller bearings
1.The operating temperature range of the gasket is -20 ~ 100 ° C. Special sealing gaskets are required for use beyond this range.
2.The allowable circumferential speed of the shaft varies according to the working conditions, generally 6 ~ 8m / s. If the working conditions such as temperature, lubrication, and finishing of the shaft are good, it can sometimes be used within about twice the peripheral speed.
IKO bearing maintenance and repair
Maintenance and repair -maintenance, repair and troubleshooting
In order to maintain the original performance of the rolling bearing, as long as possible in good condition for long-term use, the bearing must be regularly inspected and maintained to prevent failures, ensure reliable operation, and improve efficiency and effectiveness.Regular maintenance should be performed according to the operating conditions and operating standards of the machine. Contents include monitoring the operating status, adding or replacing lubricants, and regular disassembly inspections.The maintenance items in operation include the rotating sound of the bearing, vibration, temperature, lubricant status, etc.If an abnormal state is found during operation, the cause should be found and corresponding countermeasures should be taken. Carefully inspect the removed bearings as needed.
IKO bearing abnormal detector
Predicting the abnormal condition of bearings during operation is extremely important in production. The NSK bearing abnormality detector can monitor the condition of the bearing in operation. Once an abnormal condition occurs, it will immediately alarm or automatically shut down. Not only can prevent failures, but also achieve scientific maintenance.
IKO bearing damage and countermeasures
Generally speaking, the correct use of IKO bearings can achieve fatigue life. However, if unexpected early damage occurs, it can no longer be used. Unlike fatigue life, this early damage is called a failure or accident. Many are caused by poor considerations in installation, use, and lubrication, foreign objects invading from the outside, or insufficient research on shafts and bearing housings.
The damage state of the bearing, such as the abrasion of the ring flange of the roller bearing, may be caused by insufficient lubricant, inappropriate grade, defective oil supply and discharge structure, foreign matter intrusion, bearing installation error or excessive shaft deflection. It may also be caused by a combination of the above reasons. IKO LM5080100 bearings online , pls click here :
Therefore, it is difficult to know the true cause of damage only by investigating bearing damage. However, if we fully understand the machine, working conditions and peripheral structure of the bearing, understand the situation before and after the failure, and then analyze the damage situation of the bearing and a variety of related reasons, we can prevent similar failures again. Table 3 gives representative bearing damage causes and
IKO bearing installation prior to the technical measurement work
When installing the rolling bearing, first fix the dial indicator to the end surface of the box shell, so that the contact of the watch moves on the bearing ring raceway while shifting the bearing. Check the pointer of the dial indicator while shifting and shifting. If the pointer deflects, clarify the shaft The circle and the center line of the shaft are not perpendicular. If the case hole is deep, you can also use the extended dial gauge to hone. This is a good way to hone the verticality of the shaft ring and shaft centerline. The bearing device is reversed, not only does the bearing work abnormally, but the joint surfaces will be severely worn. Because the difference between the shaft ring and the seat ring is not obvious, special care should be taken in the assembly, and it cannot be reversed. The precise time of the device should be that its seat ring can actively adapt to the rolling of the rolling body to ensure that the rolling body is located in the upper and lower raceways. In addition, there should be a 0.2-0.5mm gap between the seat ring of the self-aligning ball bearing and the bearing housing hole to compensate for errors caused by parts processing and inaccurate equipment. When the bearing ring is in the middle during operation When moving, this gap can ensure its active adjustment, avoid contact friction, and make it operate normally. Otherwise, it will cause serious damage to the bearing.
1.Commonly used types of rolling bearings
Rolling mill bearings, joint bearings, turntable bearings, spherical bearings with seats, thrust ball bearings, one-way bearings, full complement roller bearings, thrust roller bearings, linear motion bearings.
For rolling bearings with a larger diameter, the gap is larger, so it can be directly detected with a narrow feeler gauge. For a bearing with a small diameter, the clearance is small and it is inconvenient to measure with a feeler gauge, but the backlash of the bearing must be measured with a feeler gauge of appropriate thickness.
2. Lead pressure detection method
It is more accurate to detect the clearance of rolling bearing by lead pressing method than feeler gauge, but it is more troublesome. The aluminum wire used for testing should be soft, and the diameter should not be too large or too small. The ideal diameter is 1.5 to 2 times the gap. In actual work, soft lead wire is usually used for testing.
When testing, first open the bearing cover, select the lead wire of appropriate diameter, cut it into 15-40 mm long sections, place it on the journal and the interface between the upper and lower bearings, cover the bearing cover, and tighten the fixing bolts according to the specified torque Then loosen the bolt, remove the bearing cap, use a micrometer to detect the thickness of the flattened lead wire, and find the average value of the bearing top clearance. If the top clearance is too small, you can add pads on the upper and lower tile joints. If it is too large, reduce the pad, scrape or re-tile.
The circumferential surface of IKO bearing rings should be well supported and evenly stressed to reduce deformation and give full play to the bearing capacity of high-temperature bearings. The ferrule cannot slide along the tangent direction in its mating surface, otherwise it will damage the mating surface. The free-end bearing must be able to adapt to the change in the length of the shaft and the bearing seat hole, that is, it must have the ability to adapt to the axial position within a certain range. Care must be taken to make bearing installation and disassembly easy, saving time and money.
Bearing inner diameter: Before the measurement, the bearing should be installed according to the regulations and the high-temperature bearing cap bolts should be tightened according to the specified torque. After measuring the reference size on the outer diameter micrometer with the inner diameter gauge, the measurement should avoid the thinning area. The difference between the bearing inner diameter and the corresponding journal outer diameter is the fit clearance. Coaxiality of the inner bore of the main bearing: The coaxiality error of the inner bore of the main bearing is mainly caused by the coaxiality error of its bearing bore, and the cause of the coaxiality error of the bearing bore is the deformation of the cylinder block. When the radial runout of the main journal is within the specified tolerance, check the joint marks of the main journal and bearing. If the main high-temperature bearings are obviously inconsistent with the joint marks, it means that the coaxiality error is large, and scraping and boring bearings can be used. Or replace the cylinder block and other solutions, otherwise it is difficult to ensure the normal operation of the engine .
Precautions for IKO bearing installation
1.Before installing IKO bearings, you should first use appropriate measuring tools, check the bearing housing holes and processing quality according to the provided bearing drawings and mechanical requirements, and identify the authenticity, such as the accuracy of the size and the roughness of the shape. Bearing model to determine whether it is suitable for supporting use, if it is found that it is not a match, please immediately determine the model for replacement. Do not force it, which will directly lead to mechanical scrapping.
2.The holes on the shaft and bearing assembly surfaces are bumpy, if any, burrs, rust, or solid particles (such as debris, sand, soil) are present, which not only makes it difficult to install the bearing, the installation position is incorrect, such as high temperature bearings Abrasives where solid particles can fall, the working surface of the bearing that is worn or scratched when the bearing rotates, so it must be carefully checked before installation. If these defects are found, they should be modified. Such as the use of oil to remove burrs, etc., it is proposed to touch traces of fine emery cloth, rust, and Poland, if solid particles, dirt, etc. are cleaned
3.When cleaning the installation surface, you should use gasoline or xylene to clean. You can use a clean rag and apply a thin layer of oil, so that it is clear and convenient.
4.Open the temporary installation package high-temperature bearing, it is immersed in gasoline and other liquids and gently rotate the hand to ensure that the cage, roll package elements and raceway to thoroughly clean the oil surface.
5.When cleaning the bearings, you should first melt them with hot oil from 90 ° to 100 °, so that the packaging and the chip are cleaned and the tools are seamlessly connected without digging the old oil, then pour into the heat for a few minutes, and then Wash with kerosene and gasoline, and then finally clean. After washing, gloves should be worn, and the bearings should be wiped dry with a clean cloth or paper on the table.
6.Special attention should be paid here that the high-temperature bearings that are sealed should never be cleaned. The inside of the sealed room should remain unchanged and absolutely not clear.