How to tighten the bearing clearance of the reducer, and how to adjust the axial clearance of the ro

The reducer is the most widely used transmission device in industrial enterprises, and the adjustment of the bearing clearance of each shaft in the reducer is the key to the continuous and stable operation of the reducer. After the reducer runs for a period of time, due to the mutual wear and tear between the components, it will lead to the increase of the bearing clearance, in order to ensure that the deceleration can continue to work stably, we must adjust the bearing clearance of each shaft of the reducer after the reducer runs for a certain time. This paper focuses on the adjustment of the clearance between the shafting systems of the reducer in practical work from the aspect of work practice, mainly from the two forms of end cover of the adjustment of the reducer bearing clearance.

The bearing end cover for reducer fixing is generally divided into two types: external and embedded. The external end cover has a simple structure, but the sealing performance is good, and the box cover should be opened when adjusting the bearing clearance, which is mostly used to fix the bearing with non-adjustable clearance. When the externally mounted end cover is used to fix the bearing, the bearing clearance and sealing performance can be adjusted with the adjustment gasket, which is convenient for assembly and disassembly, but the length of the shaft section is increased.

The recessed end cover, due to the use of adjustment bolts, is easy to adjust, and can be used to fix bearings with adjustable clearance and reducers with high sealing requirements. The method of bearing clearance adjustment is summarized from practical work experience.

Between the bearing and the circlip, add a gasket treatment.

？？What does it mean to have a bearing clearance?

The adjustment of the axial clearance of the rolling bearing in the gearbox belongs to the business scope of the assembly fitter. Only adjustment pads and covers are allowed for proper assembly.

In view of the different machining errors of the parts, the thickness of the adjustment pads of the same type of gearbox is not the same. See Fig

1. Adjust the ring adjustment nut of the left and right bearings to adjust the clearance, the specific method is as follows:

1. First of all, we need to remove the differential on the car (the front-wheel drive car is arranged on the front axle, while the rear-wheel drive car is the rear axle).

2. Then use a wrench to loosen the inner axle wheel disc of the differential, which is convenient for adjusting the spacing of the differential.

3. Then you will go to the step of measuring the gear spacing, and place the differential measuring table on the differential gear.

4. Next, you can directly use the differential wrench to adjust the left screw, so that the differential spacing becomes smaller. At the same time, turning the right screw counterclockwise can also reduce the differential spacing.

5. Then, after the adjustment is completed, we have to check that if the differential is manually rotated and there is no abnormal sound, it means that the spacing of the differential has returned to normal.

Second, the use of two deceleration cylindrical driving gears to adjust. Remove the side cover and gasket of the reducer chain, shift the gear, and then assemble the differential to adjust the bearing clearance.

After the differential bearing clearance adjustment is qualified, the dismantled two-way deceleration parts are restored and assembled, so that the parts are actually adjusted individually, which can prevent the two sets of components from influencing each other and causing illusions.

Hello dear! The clearance between the reducer housing and the bearing is . The clearance of the adjusted rolling bearing is the maximum amount of activity in which one ring is fixed and the other set is circumferentially or axially moved.

The maximum activity in the hanging direction is called the radial clearance, and the maximum activity along the axial direction is called the axial clearance. In general, the larger the radial clearance, the greater the axial clearance, and vice versa. According to the state of the bearing, the clearance can be divided into the following three gods:

The clearance of the original run-dry bearing in the free state before installation. The original tour limit is made by! factory processing, assembly determined.

It is also called chemical clearance, which is the hidden when the bearing and oil and the bearing seat are installed on the fixed surface and have not yet worked, due to the excessive installation, or the inner ring is enlarged, or the outer ring is reduced, or both, the installation clearance is smaller than the original clearance. Second, the first hidden installation of the work is in the working state when the play, the inner ring temperature rise is the largest, the thermal expansion is the largest, so that the bearing clearance is reduced: at the same time, due to the load, the rolling element and the raceway contact produce elastic deformation, so that the bearing clearance increases.

Whether the bearing is larger or smaller than the installation of the ceramic depends on the combined effect of these two factors. Some hobbing bearings cannot be adjusted to the free mouth. It can't be dismantled.

There are six types of these auxiliary bearings, namely 0000 type to 5000 type: some rolling bearings can be hollowed out of the clearance, but can not be dismantled, there are 6000 type (angular contact bearings) and 1000 type, 2000 type and 3000 type rolling bearings of the internal test hole, these types of wave Biyunju bearing installation tour bottom, after adjustment will be smaller than the original clearance: in addition, some bearings can be disassembled, but also can be adjusted to swim, there are 7000 type (wind spine roller bearings Type (thrust ball bearing) and Type 9000 (thrust roller bearing) three kinds, these three types of bearings do not exist in the original gamer:

For the 6000 and 7000 wave bearings, the directional clearance is reduced and the axial clearance is also reduced. On the contrary, for 8000 and 9000 rolling bearings, only the axial travel limit is of practical significance. A proper mounting run is conducive to the proper operation of the rolling bearings.

If the clearance is too small, the temperature of the rolling bearing will rise, and it will not work normally, so that the rolling elements will be stuck: the clearance will be too large, the equipment will vibrate greatly, and the noise of the infusion bearing will be large. Hopefully, this service will help you <>

<> you can click on my avatar to follow me, and if you have any questions in the future, you can consult me again, and look forward to serving you again. Good luck;Have a good life and everything goes well!If you are satisfied with my service, please give a thumbs up<>

Once again, I wish you all the best!Hand Bi peace and joy.

Summary. Use a feeler gauge to plug the tooth profile gap from the end face (another gear can be turned), and the readout of the feeler gauge that can be just stuffed in is the tooth side clearance.

Use a feeler gauge to plug the tooth profile gap from the end face (another gear can be turned), and the readout of the feeler gauge that can be just stuffed in is the tooth side clearance.

How to calculate the gear clearance when the large reducer repair bearing is not equipped with gears.

The size of the gap is related to the medium connected to the grinding wheel, the larger the gap, the smaller the torque that the connected medium can bear, the size of this torque is related to the maximum torque that the motor can bear, such as the torque from the deceleration of the number of types exceeds the most blind slag of the motor, and the connected medium is not broken, the motor will be burned because of overload. Geared motor refers to the integration of reducer and motor (motor). This type of integration is also commonly referred to as a gear motor or gear motor.

Usually by a professional reducer manufacturer, after the integration and assembly, it is supplied as a complete set with the motor.

This gap is generally within the range, otherwise the tumbling body will be unevenly loaded and cause more serious axial channeling.