Noise Analysis Of Raceway Of Nsk Bearing
Noise Analysis Of Raceway Of Nsk Bearing
Five Fault Rules For Plain Bearings
Five Fault Rules For Plain Bearings

What Is The Preload Of Timken Rolling Bearing?

Timken Rolling Bearing

Timken bearing imported bearing sales friend Timken Rolling Bearing product platform what is the preload of rolling Timken bearing?

The internal clearance (original clearance) of Timken Rolling Bearing before installation is different from the internal clearance (called working clearance) of Timken bearing when the operating temperature is reached after installation.

The former is large. With different applications, many require negative operating clearance, i.e. applying load. This preload is to ensure that Timken Rolling Bearing can prevent damage due to slip under the load conditions used during matching.

Function: improve the stiffness of Timken imported bearing, reduce operating noise, compensate the increased clearance caused by wear during operation, improve the accuracy of shaft, and prolong the service life of Timken Rolling Bearing.

The force is often the coefficient of the main index (rated dynamic load CR). The preload shall be calculated first for the preload load, and the conventional value shall be determined after continuous correction confirmed by the test, Timken Rolling Bearing which shall be implemented through different adjustment methods.

What Is The Preload Of Timken Rolling Bearing?

We all know that many imported bearings will fail. Many users of imported bearings have this situation. Why? Timken Rolling Bearing The failure of imported bearings has become a new problem for us. We need to find all ways to solve this problem. What is the solution? This problem is so difficult to solve.

Of course, Timken Rolling Bearing it is difficult to solve. Imported bearings are easy to fail This is a common problem when we use imported bearings After the bearing runs for a period of time, it is necessary to check whether there are problems, especially whether it fails. Today I will tell you the failure classification of imported bearings.

1. Contact fatigue failure

Contact fatigue failure refers to the failure of bearing working surface under Timken Rolling Bearing the action of alternating stress. Contact fatigue spalling occurs on the working surface of the bearing and is often accompanied by fatigue cracks. It first occurs from the large alternating shear stress below the contact surface, and then extends to the surface to form different spalling shapes, such as pitting or pitting spalling, which is called shallow spalling.

Due to the gradual expansion of the spalling surface, Timken Rolling Bearing it often expands to the deep layer, forming deep spalling. Deep spalling is the fatigue source of contact fatigue failure.

2. Wear failure

Wear failure refers to the failure caused by the continuous wear of the metal on the Timken Rolling Bearing working surface caused by the relative sliding friction between the surfaces. Continuous wear will cause gradual damage to bearing parts, and eventually lead to loss of bearing dimensional accuracy and other related problems.

Wear may affect the change of shape, the increase of fit clearance and the change of working surface morphology, may affect the Timken Rolling Bearing lubricant or make it polluted to a certain extent, resulting in the complete loss of lubrication function, resulting in the loss of rotation accuracy and even normal operation of the bearing.

Wear failure is one of the common failure modes of various bearings. According to the wear form, Timken Rolling Bearing it can be divided into common abrasive wear and adhesive wear.

Abrasive wear refers to the wear caused by the relative movement of the contact surface due to the extrusion of foreign hard particles or hard foreign matters or Timken Rolling Bearing wear debris on the metal surface between the working surfaces of imported bearings, which often causes furrow like scratches on the working surfaces of bearings.

Hard particles or foreign matters may come from the inside of the host machine or from other adjacent parts of the host system and are sent into the bearing by the lubricating medium. Timken Rolling Bearing Adhesive wear refers to the uneven stress on the friction surface due to the micro bulge or foreign matter on the friction surface.

When the lubrication conditions are seriously deteriorated, the local deformation and friction micro welding of the friction surface are easy to be caused due to the heat generated by local friction. In serious cases, Timken Rolling Bearing the surface metal may be locally melted, and the force on the contact surface will tear the local friction welding point from the substrate and increase the plastic deformation.

This cyclic process of adhesion tear adhesion constitutes adhesive wear. Generally speaking, slight adhesive wear is called scratch and severe adhesive wear is called bite.

3. Fracture failure

The main reasons for Timken Rolling Bearing the fracture failure of imported bearings are defects and overload. When the external load exceeds the material strength limit and causes the part to break, it is called overload fracture. Overload is mainly caused by sudden failure or improper installation of the host.

Defects such as microcracks, shrinkage cavities, bubbles, large foreign objects, overheated tissue and local burns of bearing parts will also cause Timken Rolling Bearing fracture at the defect during impact overload or severe vibration, which is called defect fracture.

It should be pointed out that in the manufacturing process of bearings, the presence of the above defects can be correctly analyzed by instruments in the factory re inspection of raw materials, quality control of forging and heat treatment, and processing process control, Timken Rolling Bearing and the control must still be strengthened in the future. But generally speaking, most of the bearing fracture failures are overload failures.

4. Clearance change failure

During the operation of imported bearings, due to the influence of external or internal factors, the original matching clearance is changed, the accuracy is reduced, and even “bite” is called clearance change failure.

External factors such as excessive interference, improper installation, expansion caused by temperature rise, instantaneous overload, etc., and internal factors such as residual austenite and Timken Rolling Bearing residual stress in an unstable state are the main causes of clearance change failure.