- Hello Customer - Log in or Register!
1. Contact fatigue failure
Failure means the bearing working surface of contact fatigue failure arising from the effect of alternating stress. Contact fatigue spalling in bearing working surface, is often accompanied by fatigue crack, first from the contact surfaces of the following maximum alternating shear stress, and then extended to the flaking of the surface form different shapes, such as point-like pitting or flaking spots, shallow layer peeling off of the Peel into small flakes. Due to flaking surfaces gradually expanded, and tend to spread deeper, forming deep peeling. The deep contact fatigue failure fatigue spalling is the source.
2. Wear failure
Wear failure refers to the relative sliding friction between the surface causing surface metal constantly wear and tear resulting from the failure of its work. Continuous wear and tear will cause bearing damage gradually, and eventually lead to loss of precision bearing size and other related issues. Wear can affect the shape change, increased clearance and surface morphology changes may affect the lubricants or lubrication function caused by pollution reaches a certain level and make it a complete loss, so that the loss of running accuracy of the bearing and does not operate properly. Wear failure is one of the common failure modes of all kinds of bearings, worn forms can generally be classified into the most common abrasive and adhesive wear of wear.
Abrasive wear of means between the bearing surfaces into external hard particles or hard foreign objects or debris on the surface of metal contact surface wear and tear resulting from the relative movement, often causing the furrow of the bearing surface abrasions. Hard particles or foreign objects may come from inside or from other neighboring parts of the host system from the host into bearing lubrication medium. Adhesive wear means due to the friction surface micro-bumps or uneven friction force of foreign bodies, lubrication when conditions deteriorated, because of local friction heat, causing friction and local deformation of surface micro-welding and friction, serious metal on the surface may be partial melting, forcing local friction on the contact surface plastic deformation of weld tearing from the substrate increases. This adhesion – tear – cycle constitutes of adhesion of adhesive wear, in General, slightly adhesive wear is known as bruises, severe adhesive wear is called occlusion.
3. Fracture failure
Bearing failure due to defects and overload two major factors. When the applied load exceeds the ultimate strength of the material part fracture called the overload fracture. Overload is mainly hosts sudden failure or improper installation. Bearing parts of micro-cracks, shrinkage, bubbles, large defects such as foreign bodies, organizations and local overheating burn shock overload or high vibration is also prone to defects caused by fracture, break called defects. It should be noted, bearing in the manufacturing process, the raw materials into the plant a re-inspection, forging and heat treatment quality control, process control through the instrument correctly interpreting the defect exists, control must be strengthened in the future. In General, however, usually appear most of fracture failure overload failure of the bearing.
4. Clearance fail
Bearing at work, due to the effects of the external or internal factors, so that the original clearance changes, loss of precision, even causing "death" called clearance change failure. External factors such as the degree of interference is too large, the installation is not in place, expansion caused by temperature, instantaneous overload, intrinsic factors such as residual stress and residual austenite in clearance changes caused by instability, which is the main cause of failure.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 60TAC120B NSK | 60 | 120 | 20 |
| 55TAC120B NSK | 55 | 120 | 20 |