How do you match this shaft with a bearing? What is the fit of the shaft and bearing

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The question is not detailed, so I have to tell you the main points. Install the large surface of the bearing, add a wave spring (or a coil of compression spring, of course, each has its own structural requirements) on the large end face of the outer ring of a bearing, and apply axial force to the outer ring, so that the clearance can be kept unchanged! Please give it points!

This requires specific size! It is easy to choose if there are bearing parameters! Luckily, a lot of them went!

Like the major brands of imported bearings and domestic models together; hundreds of thousands of models; Each brand has a different model name!

But it's all based on size and parameters!

There are no parameters; Even God-men don't know what model!

You can ** "original imported bearings" ** company; Ask them: 021-61175856

The main product of Hebei Qipeng Trading Company is bearing, which is the basis of all machines; It is an indispensable product in modern society; Known"Machinery industry of food"the beauty of the name; It ensures the quality of all industrial products; NSK is all about operation and control; Investigate the friction phenomenon of the operation of the machine to ensure the smooth rotation and operation; It is always present and provides a rich and colorful life for mankind and will contribute to the global energy conservation movement and resource conservation.

Products involve: deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, self-aligning ball bearings, self-aligning roller bearings, angular contact ball bearings, thrust ball bearings, thrust roller bearings, spherical bearings, high temperature bearings, outer spherical bearings.

Shaft and bearing fit:

1) The bearing fit is generally a transition fit, but in special cases, interference fit can be selected, but rarely;

2) Because the bearing is matched with the shaft, the inner ring of the bearing is matched with the shaft, and the base hole system is used, and the bearing should be completely aligned with zero.

We can also think of this in actual use, but in order to prevent the inner ring from rolling and damaging the surface of the shaft when the minimum limit size of the bearing inner ring is matched with the shaft, our bearing inner ring has a downward deviation tolerance of 0-several um to ensure that the inner ring does not rotate, so the bearing generally chooses the transition fit, even if the transition fit is selected, it can not exceed the interference of 3 wires;

3) Match the accuracy of the grade of the shirt to choose 6 grades, sometimes it also depends on the material, as well as the processing technology, theoretically the 7 level of accuracy is a bit low, 5 levels of cooperation to use grinding;

Zhishi 4) the general selection is: the inner ring of the bearing and the shaft fit, the shaft selection K6; <>

In general, the fit of the bearing with the shaft should be a transition or interference fit.

The fit between the shaft and the bearing refers to the dimensional relationship between the shaft and the inner ring of the bearing, and between the outer ring of the bearing and the housing hole. Generally speaking, the fit between the bearing and the shaft should be selected as a transition or interference fit to prevent relative sliding; The fit between the outer ring of the bearing and the housing bore should be selected as a clearance or transition fit for easy installation and disassembly.

Bearings and fittings, radial bearings, angular contact ball bearings, tapered roller bearings, etc. Tapered roller bearings are a type of split bearing that can withstand radial and unidirectional axial loads. It consists of an inner ring, an outer ring, rollers, and a cage.

The M6 tolerance zone is an interference fit that applies to the fit of the inner ring of the bearing to the shaft. It prevents relative sliding, improves turning accuracy, and adapts to temperature changes.

Performance characteristics of tapered roller bearings:

1.The speed is slippery, rigid, and resistant to shock and vibration.

2.It can withstand large axial loads and radial loads.

3.Detachable and interchangeable parts allow for easy installation, removal, and maintenance.

4.The larger the contact angle, the stronger the axial load capacity. <>

The fit between the shaft and the bearing is generally based on the form and direction of the load, and several forms of transition or interference and clearance fit are adopted.

The shaft will generally have a shoulder, after the bearing is installed, the end face of the inner ring will be in direct contact with the shoulder, and the axial sailing banquet will be carried out by the simple car with the shoulder of the shaft, and the other side will be positioned by the shoulder of the retaining ring to support the other side. State command silver.

<> relative movement between the inner ring of the bearing and the shaft is not allowed.

The inner ring and shaft are actually made by means of an "interference fit."

Fastened together. No matter how large the tolerance is, it must also be an interference fit, and not only Sun Xian's mold shot allows for a gap fit. Therefore, to install the bearing on the shaft diameter, it is necessary to preheat the bearing before installation, and after cooling, the inner ring shrinks and is fastened with the bearing.

Kaijian, that is, the inner ring of the bearing and the shaft can only be used with an "interference fit".

Fit of shaft and bearing: (1) Bearing fit is generally a transitional fit, but interference fit can be selected in special cases, but rarely; (2) Because the bearing and the shaft are matched with the inner ring of the bearing, the base hole system is used, the bearing should be completely zero, we can also think so in actual use, but in order to prevent the inner ring of the bearing from rolling when the minimum limit size of the shaft is matched, the surface of the shaft is damaged, so our bearing inner ring has a downward deviation tolerance of 0-a few um to ensure that the inner ring does not rotate, so the bearing generally chooses to transition with Lu Youtanghe on it, Even if the transition fit is selected, the interference of 3 filaments should not be exceeded; (3) The matching accuracy grade is generally selected 6 grades, sometimes it also depends on the material, as well as the processing technology, theoretically the 7 level accuracy is a bit low, and the 5 level of cooperation will be used to grind; (4) The general selection is: the inner ring of the bearing is matched with the shaft, and the shaft is K6;

Outside? Hole? , hole selection K6 or K7 shaft and pulley with the matching trapping:

The gap between the motor shaft and the pulley is matched, and then the positioning key is added, if it is over-matched, the motor shaft will heat and expand and damage the pulley, so there must be a gap!