Vibration motor imported bearing installation skills

When the imported bearing replaces the vibration motor, the effect is different, and the same bearing as the original model must be used, and the effect in this aspect has a better meaning, so that it can be used in this respect. Reflects better results. First introduce the installation of imported bearings from the following situations.
    When replacing a new bearing with a vibrating motor, the same bearing as the original model must be used.

    1) Wash the bearing with kerosene, press it into the bearing seat, fill the roller of the outer ring of the bearing with Shell No. 3 lithium base grease to two-thirds full, apply evenly with the net hand, install the bearing gland, and apply the bolt The fastening bolt of the anti-loosening rubber presses the bearing gland;

    2) The bearing is a cylindrical roller bearing with a detachable inner casing. The bearing should be placed on the rotating shaft and placed in place;

    3) Mount the bearing housing on the casing. If there is grease grease hole, it must be aligned. Pressing the bearing block with the fastening bolts of the anti-loosening rubber;

    4) The inner and outer eccentric blocks are mounted on the rotating shaft and are in place. If there is an axis key, the shaft key should be inserted into the keyway and then the outer eccentric block should be installed, and the shaft can be mounted on the rotating shaft with the retaining ring;

    5) Tightly fix the eccentric block fastening bolts and turn the adjustable eccentric block to the angular position before the unloading and tighten the fastening bolts. After the above assembly is completed, the shaft should have a certain axial movement;

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How to properly install the thrust bearing

    The thrust bearing is to be inspected after installation. When installing the thrust bearing, first check the verticality of the shaft ring and the centerline of the shaft. The test method is: fix the dial gauge on the end surface of the casing, so that the contact of the watch top rotates the bearing on the bearing shaft raceway, and then observe the dial gauge pointer. If the shaft ring and the shaft center line are not perpendicular, then the pointer Hemiplegia. The pointer of the dial gauge has a relatively long length. If the box hole is deep, you can also choose to use the extended dial gauge for inspection.

    The seat ring can automatically adapt to the rolling of the rolling elements, ensuring that the rolling elements are located in the upper and lower ring raceways, indicating that the thrust bearings are installed correctly. If the thrust bearing is reversed, if this happens. The bearings are not working properly and the mating surfaces of the bearings are subject to severe wear. The difference between the shaft ring and the seat ring is not very obvious, so care should be taken in the assembly. Moreover, there should be a gap of 0.2-0.5mm between the seat ring of the thrust bearing and the bearing seat hole. This gap is used to compensate for the error caused by inaccurate machining and installation. If there is an accident, the bearing sleeve is in operation. When the center of the circle is offset, this gap can make a big difference, ensuring that it automatically adjusts to avoid contact friction and keep the bearing running normally. If there is no such gap, it will cause severe damage to the bearing. The bearing is damaged and cannot be used.

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INA bearing repair and maintenance considerations

Core Tip: Rolling INA bearings are precision components and should be used with great care. Even high quality INA bearings, if not used properly, will not achieve the desired results. INA bearing use precautions
Rolling INA bearings are precision components and should be used with great care. Even high quality INA bearings, if not used properly, will not achieve the desired results.
The precautions for the use of INA bearings are as follows.
Keep the INA bearing and its surroundings clean
Even tiny dust that is invisible to the naked eye can have an adverse effect on the INA bearing. Therefore, keep the area clean so that dust does not intrude into the INA bearing.
Use with care.
In the use of the INA bearing strong impact, it will produce scratches or indentations, causing accidents. In severe cases, it will cause cracks and breaks and must be taken care of.
Use INA bearing special tools.
Special tools must be used and cannot be replaced.
Avoid rusting the INA bearing.
When operating an INA bearing, hand sweat can cause rust. Be careful to use clean hands, try to wear gloves and pay attention to corrosive gases.
2. Installation
Whether the INA bearing is installed correctly or not directly affects the accuracy, life and performance of the bearing. Therefore, the design and assembly department should fully study the installation of INA bearings and follow the operating standards. The job standard items are usually as follows:
Cleaning INA bearings and related components
Check the size and accuracy of related parts
Installation
INA bearing inspection after installation
Filling lubricant
I hope to open the INA bearing package again during installation. Generally, when the grease is lubricated, the bearing is not cleaned and the grease is directly filled. When lubricating oil, it is generally not necessary to clean. However, for instruments or high-speed INA bearings, clean the oil and remove the rust inhibitor applied to the INA bearing. The INA bearing with the rust preventive removed is easy to rust, so it cannot be placed at will.

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Analysis of Abnormal Phenomenon Caused by FAG Bearings

Core Tips: A: FAG bearing grease rheology: 1. When the grease is not affected by external force, it can maintain a certain shape like a solid, that is, it will not automatically lose when it is still. In receiving
One: FAG bearing grease rheology:
1. When the grease is not subjected to external force, it can maintain a certain shape like a solid, that is, it will not automatically lose when it is at rest.
2. In the case of extremely high shear stress (high shear rate), the grease flows like a Newtonian fluid, and the viscosity can be kept constant without changing with the shear rate.
3. When subjected to weak external force, it will produce elastic deformation; after removing the external force, it can return to its original position and shape, showing the elastic properties of the solid.
4. When the applied external force is large enough, the grease deforms and flows, so that it can no longer automatically return to its original position and shape. Therefore, the starting torque of the grease on the mechanical running parts is larger than that of the liquid lubricating oil.
    Two: FAG bearing grease defects:
    1. Grease is semi-solid and does not flow at room temperature, so it is difficult to grease or change grease on friction parts. FAG bearing cleaning is not very convenient.
    2. The stirring resistance is large, so the heat generation is large and the cooling effect is poor. However, it should be noted here that this has a close relationship with the lubrication method. If the lubricating oil is lubricated with a fully immersed (or semi-immersed) oil bath, the grease will consume less power than the oil. For example, the British Journal of Friction and Lubrication reported in 1973, 6th issue: With a rolling FAG bearing with a diameter of 100, the speed is 1500r/min, and it is lubricated with grease. There are many examples of energy consumption in China, such as the refractory plant of Chongqing Iron and Steel Company. The motor power of the refractory tunnel kiln induced draft fan is grease compared to the N68 lubricant. The FAG bearing temperature is 4~6 °C lower.
    3. The base oil is the carrier of the additive, and the additive does not function if the base oil fails.
4. Due to the mechanical action, the lubricating base filled in the FAG bearing configuration will gradually lose its lubricating properties. Therefore, the grease needs to be continuously replenished and updated. The interval between lubricant replenishment varies depending on the formation, size, and rotational speed of the FAG bearing, and the approximate interval of replenishment of the grease is required depending on the operation time.
Large metal noise
  Reason 1: Abnormal load, countermeasures: Correct the fit, study bearing clearance, adjust and load, and correct the position of the housing shoulder.
  Cause 2: Poor installation, countermeasures: Machining accuracy of shaft and outer casing, improvement of mounting accuracy, and installation method.
  Cause 3: The lubricant is insufficient or unsuitable. Countermeasure: Replenish the lubricant and select the appropriate lubricant.
  Cause 4: The rotating parts are in contact. Countermeasure: Modify the contact part of the curved path seal.
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