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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>IKO bearing common failure method and application notes analysis Analysis of common failure methods and application precautions of IKO bearings
1. Touch fatigue failure Touch fatigue failure refers to the effect of IKO imported bearing operation on the appearance of alternating stress. The touch fatigue occurs in the appearance of IKO bearing operation; often accompanied by fatigue crack; firstly from the touch surface The shear stress occurs; then it expands to the outer surface to form a different shedding shape; if the point is pitting or pitting, the shallow piece is called the shallow layer falling off because of the gradual expansion of the shedding surface; Enlarge; constitute deep detachment. Deep detachment is the source of fatigue that touches fatigue failure. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
2, wear and failure wear and tear refers to the relative sliding conflict between the appearance of the external wear caused by the wear and tear of the metal. The continued wear will lead to the gradual damage of IKO bearing parts; and the end of the IKO bearing scale accuracy loss and other related problems Wear can affect the shape change; the cooperation gap is increased and the work appearance is modified; the smoothing agent can be affected or the pollution can reach a certain extent to form a smooth loss of smooth function; thus, the IKO bearing loses the rotation precision and can not work normally. Failure is one of the common failure modes of various types of bearings; according to the wear method, it can be generally divided into the most common abrasive wear and adhesive wear.
Abrasive wear refers to the abrasion caused by the extrusion of foreign solid particles or hard foreign objects or metal appearance between the outer surface of IKO bearing work, and the wear caused by the relative movement of the outer surface; often forms a furrow-like scratch on the outer surface of the bearing operation. Hard The particles or foreign matter can come from the inside of the host or other adjacent parts from the host system are sent from the smooth medium into the IKO bearing. IKO bearing accuracy error is associated with common sense. Adhesive wear refers to the conflict surface due to the conflicting appearance of microscopic bumps or foreign objects. Uneven force; when the smooth condition is severely deteriorated; due to partial conflict heat generation; easy to form part of the conflict surface deformation and conflict micro-welding; when the surface is severe, the surface metal can be partially melted; the touch surface effect will be part of the conflict solder joint Tearing from the substrate to increase plastic deformation. This adhesive tearing adhesion process constitutes adhesive wear; in general; fine adhesive wear is called scratch; severe adhesive wear is called bite.
3, cracking failure IKO bearing cracking failure is the main reason is the shortcomings and overload two major elements. When the applied load exceeds the data strength limit and the part cracking is called overload cracking. The overload is mainly caused by the host sudden fault or the device is not proper. Bearing parts Micro-cracks, shrinkage cavities, air bubbles, large foreign objects, overheating arrangements and partial burns will also cause cracking in the shortcomings during impact overload or severe oscillation; it is called defect cracking. It should be pointed out; IKO bearing is in the process of production. For the re-inspection of the original data, the quality control of the casting and heat treatment, and the processing of the processing process, the above-mentioned shortcomings can be correctly analyzed through the instrument; the control must be strengthened in the future. However, in general, the IKO bearing cracking failure is generally presented. Most are overloaded.
4, the clearance change fails IKO bearing in the operation; because of the influence of the external or connotation elements; the original cooperation gap is changed; the accuracy is reduced; even the formation of "bite death" is called the clearance modification failure. External factors such as interference Large; the device is not in place; the large amount of expansion caused by temperature rise, instantaneous overload, etc.; connotation elements such as residual austenite and residual stress are unstable, etc. are the primary reasons for the failure of the play change.
1. If the IKO bearing is outstandingly smooth; and the correct insulation and moisture, it should show that the oil seal should not wear. However, the best way to look at the bearings and view the oil seals is when you open the bearing housing. Look at the oil seal near the bearing; to ensure that they are sufficient to avoid hot liquid or corrosive liquid or gas entering the bearing along the axis; if the oil seal has worn out, it should be replaced quickly.
2. High temperatures often indicate that IKO bearings are in an abnormal condition. High temperatures are also detrimental to the smoothing agent in the bearing. Sometimes IKO bearings are overheated and can be attributed to the smoothing agent of the bearing. If the bearing is operated for a long time beyond 125 degrees Celsius, the IKO bearing life will be reduced.
The causes of high temperature IKO bearings include: smooth lack or over-smooth, smoothing agent containing magazines, excessive load, IKO bearing damage, lack of clearance, and high temperature conflicts in oil seals.
3. Check the condition of the running machine; monitor it; avoid forming a device stop.
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Analysis of common failure methods and application precautions of IKO bearings
Source: China Bearing Network Time: 2014-03-27