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Mechanical equipment

Introduction of fixing method of imported bearing inner ring

Imported bearings are divided into inner and Outer Rings, I think we all know this. Then the imported bearing inner and Outer Ring is how to fix it? First of all, we introduce the imported bearing inner ring of the fixed way. 1. Shaft shoulder fixed bearing inner ring rely on shaft shoulder and interference to achieve axial fixation. It is suitable for supporting structure with both ends fixed. Simple structure, small outline size. 2. The inner ring of the elastic retaining ring fixed bearing is axially fixed by the shaft shoulder and the locking nut. Able to bear small axial load in both directions. Small axial size. 3. Lock nut fixed bearing inner ring by the shaft shoulder and lock nut to achieve axial fixation. And has the Stop Washer to prevent loose, reliable, is suitable for the high speed, the heavy load situation. 4. The bearing inner ring is axially fixed by the shaft shoulder and the shaft end retaining ring. The shaft end retaining ring is fixed at the shaft end by screws. The fixing screw should have anti-loosening device. The utility model is suitable for occasions where the shaft end is not suitable for cutting screw threads or the space is restricted. 5. The fastening sleeve is clamped on the shaft by compressing the Radial Dimension of the inner hole of the fastening sleeve to realize the axial fixation of the inner ring of the bearing. 6. The clamping mode of the fixed back-off sleeve of the back-off sleeve is the same as that of the back-off sleeve. But because of the special nut, it is convenient to load and unload the bearing. It is suitable to fix the double row spherical surface bearing with bigger radial load and smaller axial load on the optical axis.
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06
2020-07

Function of bearing

Release time : 2020-07--06
Bearing its role should be said to be support, that is, the literal interpretation of the bearing, but this is only part of its role, the essence of support is able to bear the radial load. Can also be understood as it is used to fix the shaft. Is to fix the axis so that it can only achieve rotation, and control its axial and radial movement. The consequence of a motor without bearings is that it does not work at all. Because the shaft can move in any direction, the motor requires the shaft to rotate only. It is theoretically impossible to realize the function of transmission, not only that, but also the bearing will affect the transmission. In order to reduce this influence to achieve good lubrication on the bearing of the high-speed shaft, some bearings already have lubrication, called pre-lubricated bearings, and most bearings have lubricating oil, responsible for high-speed operation, because friction will not only increase energy consumption, but also very easily damaged bearings. What effect does the lubricant have on the bearing? Whether rolling bearings or sliding bearings, in the shaft rotation, its rotating part and static part can not be directly in contact, otherwise it will be due to friction cooked and damaged. In order to prevent static part friction, add lubricant. The effect of Lubricant on bearing is mainly shown in three aspects: Lubrication, cooling and cleaning. Bearings can be divided into many kinds, rolling bearings, radial bearings, ball bearings, thrust bearings and so on. Its function should be to support, that is literally used to bearings, but this is only part of its function, the essence of support is to be able to bear radial load. Can also be understood as it is used to fix the shaft. Is to fix the axis so that it can only achieve rotation, and control its axial and radial movement. What is the role of the clutch release bearing? Clutch release bearing is a kind of thrust bearing commonly known as the Clutch Spring Plate, its role is in the clutch pedal under the pressure of the spring-loaded pressure plate or drive plate to move in the direction of the clutch housing, that is to say, when you step down the clutch pedal, tilt the separation lever to overcome the pressure plate spring thrust to complete the separation of the clutch. The separating lever of the clutch rotates with the pressure plate, but the operating mechanism linked with the clutch pedal can not rotate. In order to adapt to the different movement conditions between the two, thrust bearings are used to reduce friction and wear. If the separating bearing loses its sliding function because of the lack of oil, it will not only produce abnormal sound, but also aggravate the AL loss at the force point of the separating Rod, then the effective range of the starting pressure plate of the clutch pedal is getting smaller and smaller. Clutch Plate and pressure plate from incomplete shift will produce abnormal sound, separation rod wear will cause pressure plate starting uneven, driving and driven each other, resulting in shift not on.  
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21
2020-05

Detailed explanation of Koyo bearing's ultra-precision machining steps

Release time : 2020-05--21
Detailed explanation of Koyo bearing's ultra-precision machining steps. Koyo bearing super finishing sequence can be generally divided into three steps: cutting, semi-cutting, finishing finishing. 1. Cutting of Koyo bearings: When the surface of the grindstone is in contact with the convex peak of the surface of the rough raceway, the force per unit area is larger because of the small contact area, and under certain pressure, the grinding stone was first "anti-cutting" by Koyo bearing workpiece, so that the surface of the local grinding stone particles scattered and broken, revealing some new sharp abrasive particles and edge. At the same time, the CONVEX peaks on the surface of Koyo bearing parts are cut rapidly, and the convex peaks and the grinding metamorphosis layer on the surface of Koyo bearing parts are removed by cutting and anti-cutting. This stage is called the cutting stage, in which the bulk of the metal is removed. 2, Koyo bearing semi-cutting: With the processing continued to stop, Koyo bearing workpiece surface was gradually ground. At this point, the surface of the grinding stone and workpiece contact area added, the pressure on the unit area reduced, cutting depth reduced, cutting can be weakened. At the same time, the pores on the surface of the grindstone are blocked, and the grindstone is in a semi-cut form. This stage is called the semi-cutting stage of Koyo bearing finish machining. During the semi-cutting stage, the cutting marks on the surface of the Koyo bearing workpiece become shallow and appear darker. 3, Koyo bearing finishing stage: This is the Koyo bearing super finishing a step. As the surface of the workpiece is gradually ground, the contact area between the grinding stone and the surface of the workpiece is further increased, and the surface of the grinding stone and the Koyo bearing workpiece is gradually separated by a smooth oil film, the pressure on the unit area is very small, and the cutting effect is reduced, automatic stop cutting. This stage is called the finishing stage. There is no cutting mark on the surface of the workpiece in the finishing stage, and Koyo bearing has a bright finish luster.
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21
2020-05

Matters needing attention in NSK bearing maintenance process

Release time : 2020-05--21
NSK bearing maintenance process matters needing attention: 1, NSK bearing seat ring disassembly skills: Some machine equipment easy to attack the connecting Rod Nsk bearing damage results, and NSK bearing damage, its outer ring is still kept in the connecting rod hole, disassembly is more difficult, as the outer ring of all the steel is relatively solid, so the hacksaw easy to slip, but too hard to hit the connecting rod will cause damage. At this point, the connecting Rod can be fixed on the vise, and the sleeve head passing through the heavy-duty socket wrench can hold the connecting rod hole with the sleeve head on one side which is slightly larger than the size of the connecting Rod Nsk bearing hole, the outer ring of NSK bearing is pressed by a sleeve head which is slightly smaller than the hole size of Nsk bearing of the connecting Rod. 2. Problems of NSK bearing itself: When repairing machinery and equipment, maintenance personnel should master the information of corresponding NSK bearing code and model one-sidedly, and avoid using other NSK bearing to exchange original NSK bearing. At present, there is a great difference in the quality of NSK bearings available on the market, and there is a high incidence of fruits such as fish-eye mixing and sub-charging, and even some NSK bearings will suffer from a decrease in the quality or function because of the excessive storage time, in order to improve the quality of NSK bearings, it is necessary to check the relevant information of NSK bearings and test their functional status and surface condition before repairing and exchanging the new NSK bearings. 3. NSK bearings must not be installed in reverse: in the process of maintenance of machinery and equipment, the demand of the machine NSK bearings direction requirements to stop accurate control, only the correct installation to ensure its obligation to operate. Because the external characteristics of some NSK bearings are not very clear, so no matter which direction can be installed on, so anti-installation results from time to time. Therefore, when assembling NSK bearings, maintenance personnel need to understand and accurately understand the installation and structure of NSK bearings, one-sided understanding of the relevant rules of the manual, in order to ensure the accuracy and efficiency of NSK bearings maintenance obligations.
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