Rolling bearing maintenance needs to pay attention to

In daily car maintenance, we will find that many car owners use butter to lubricate the rolling bearings. In fact, this method is wrong, which will accelerate the early damage of the cross-shaft rolling bearings. Why is this so? What is the correct way to maintain? Today, Asia Fluid Network Xiaobian will answer you one by one.

Because the grease fitting of the universal joint cross-shaft needle bearing is a common grease fitting, because the viscosity of the butter is large, when the grease is used to fill the cavity of the universal joint cross-shaft needle bearing with a grease gun, the butter When entering the narrow inner oil passage, the resistance increases, and the butter pressure rises to overflow the pressure reducing valve opposite the nozzle. This phenomenon can easily be mistaken for the reason why the butter is full.

In fact, the butter does not enter the needle between the needles. When removing the repair, applying the butter to the needle roller and the journal surface may exert some lubrication. Therefore, it is better to use the gear oil lubrication effect. ,This is because:

● Calcium-based grease is a mixture of oil and calcium soap. In use, due to the deterioration and evaporation of lubricating oil, the grease becomes a harder calcium soap. The calcium soap itself can not only play a lubricating role. Moreover, it also hinders the rolling of the needle on the journal, and there is no oil draining measure in the universal joint cross shaft. The deteriorated grease can neither be discharged, and the new oil is difficult to inject, thus greatly accelerating the universal direction. Wear of the cross-shaft needle bearing.

●The needle roller bearing of the universal joint cross shaft can only rotate in the original position during operation, and cannot rotate along the steel bowl and the cross journal. The rolling property of the calcium-based grease is very poor, so the new film cannot be formed immediately after the oil film is destroyed. Oil film.

● The universal joint is subjected to a large torque and alternating load during work, and the oil film of the calcium-based grease is tough, and it is difficult to form a good oil film on the friction surface of the bearing and the journal.

Pay attention when using gear oil. It should be removed after removing the universal joint cross-shaft needle bearing. After removing all the residual grease, put it in the gear oil and soak it for 2min~l0min. In use, it should be noted that the car should be replaced with new oil in time after wading. New oil should be replaced once between 2000km and 3500km. Conditional owners can use special hydraulic filling equipment to regularly lubricate the universal joint cross-shaft needle bearings of the drive shaft.

When we are curing rolling bearings, we only use the correct maintenance method to reduce the occurrence of bearing failures, in order to effectively extend the service life.
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How to extend the life of the rotor bearing?

Rotor bearings are one of the frequently replaced parts of the impact crusher. How to extend the life of the rotor bearing? The following Asian fluid network small series is explained in the following three aspects.

First of all, to choose the appropriate model and specifications, the common column-center spherical rolling bearing has strong pressure resistance, high wear resistance and good self-aligning. It is more suitable as a rotor bearing for impact crusher, and its service life is long and its average life is 10,000 hours or so.

Secondly, it is necessary to adjust the force of the impact crusher rotor bearing. The force of the rolling bearing depends on the impact force of the broken rock of the rotor and the supporting force of the bearing seat. Moderate adjustment of the flexibility of the bearing seat will reduce the rolling pressure of the bearing to a certain extent, and the user can pass the bearing seat. A rubber sheet is added in the middle of the bracket to increase the flexibility of the bearing seat, thereby damping the bearing's rotational pressure, reducing bearing wear and prolonging the service life of the rotor bearing.

Finally, it is necessary to ensure that the rotor balance accuracy is within the appropriate range. The quality of the counter crusher rotor and the plate hammer is very large. If the plate hammer is eccentric when the rotor rotates due to quality error or misalignment, the bearing rotational pressure will be increased, and the crusher will generate abnormal vibration and damage other zeros. component. Therefore, when installing the hammer, the staff must strictly follow the instructions on the drawings to reduce the error as much as possible, so that the rotational pressure of the rotor bearing becomes smaller and the service life is prolonged.
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Bearing example

For sealed bearings, add lubricant and seals (or dust caps) - also known as six large pieces. The names of the various bearing types are often named according to the name of the rolling element. The role of various parts in the bearing is: for the radial bearing, the inner ring is usually tightly fitted with the shaft and operates together with the shaft, and the outer ring usually has a transitional fit with the bearing seat or the mechanical housing hole to support the bearing. However, in some cases, there is also an outer ring running, the inner ring is fixed to support or the inner ring and the outer ring are simultaneously operated.

For a thrust bearing, a shaft ring that fits tightly with the shaft and moves together, and a seat ring that is in a transitional fit with the bearing housing or the mechanical housing bore and serves as a support. The rolling elements (steel balls, rollers or needles) are normally arranged in the bearing between the two ferrules by means of a cage for rolling motion. The shape, size and number of the bearings directly affect the bearing capacity and performance of the bearing. In addition to the uniform separation of the rolling elements, the cage can also function to guide the rotation of the rolling elements and improve the lubrication performance inside the bearing.
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Combined roller bearing characteristics and structural composition

Combined roller bearing features:

The outer ring is a full-filled cylindrical roller bearing with a thick outer ring wall. The outer diameter surface of the roller has a cylindrical shape and an arc shape, and can be matched with the raceway surface according to the design of the use occasion. With this outer ring, the roller can roll directly on the raceway and can withstand heavy loads and shock loads. The bearing is a sealed structure, filled with grease, providing long-term effective lubrication, and users can be free of lubrication. Improve the life of the bearing by using a channel that can be designed to replenish grease with harsh conditions.

Combined roller bearing structure:

1. The main roller is the most important carrier of a set of composite rollers. It mainly bears the vertical load and impact load, and has strong impact resistance, wear resistance and corrosion resistance. Since the main roller is a full complement roller bearing, it can also be used as a one-way bearing alone.

2. The side roller is the second carrier of a set of composite rollers, which is mainly subjected to horizontal load, and also has strong impact resistance, wear resistance and corrosion resistance. The side roller is designed with no inner ring full needle roller, and a core shaft replaces the inner ring and the shaft head to carry the bearing.

3. The shaft head is used as the part of the composite roller and the machine equipment. Usually the head of the shaft head is chamfered for easy installation. The shaft head can be directly welded to the equipment, or the shaft head can be welded to the hole with a round hole. The connecting plate and the device are assembled on the connecting plate.

4. The function of the cover plate is to install the side roller inside the shaft head, the main roller outside the shaft head with the nut and the thread glue to fix the important part of the shaft head together.

The above is the characteristics and structural composition of the combined roller bearing. We not only understand its characteristics, but also know its structure and structure, and know the position and function of each component. Now, if you give a combined roller bearing, can you tell the components one by one? You may wish to check yourself and see what the results of today's learning are. Combined roller bearing characteristics and structural composition

Combined roller bearing features:

The outer ring is a full-filled cylindrical roller bearing with a thick outer ring wall. The outer diameter surface of the roller has a cylindrical shape and an arc shape, and can be matched with the raceway surface according to the design of the use occasion. With this outer ring, the roller can roll directly on the raceway and can withstand heavy loads and shock loads. The bearing is a sealed structure, filled with grease, providing long-term effective lubrication, and users can be free of lubrication. Improve the life of the bearing by using a channel that can be designed to replenish grease with harsh conditions.

Combined roller bearing structure:

1. The main roller is the most important carrier of a set of composite rollers. It mainly bears the vertical load and impact load, and has strong impact resistance, wear resistance and corrosion resistance. Since the main roller is a full complement roller bearing, it can also be used as a one-way bearing alone.

2. The side roller is the second carrier of a set of composite rollers, which is mainly subjected to horizontal load, and also has strong impact resistance, wear resistance and corrosion resistance. The side roller is designed with no inner ring full needle roller, and a core shaft replaces the inner ring and the shaft head to carry the bearing.

3. The shaft head is used as the part of the composite roller and the machine equipment. Usually the head of the shaft head is chamfered for easy installation. The shaft head can be directly welded to the equipment, or the shaft head can be welded to the hole with a round hole. The connecting plate and the device are assembled on the connecting plate.

4. The function of the cover plate is to install the side roller inside the shaft head, the main roller outside the shaft head with the nut and the thread glue to fix the important part of the shaft head together.

The above is the characteristics and structural composition of the combined roller bearing. We not only understand its characteristics, but also know its structure and structure, and know the position and function of each component. Now, if you give a combined roller bearing, can you tell the components one by one? You may wish to check yourself and see what the results of today's learning are.

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