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Prevent TIMKEN deep groove ball bearings use premature failure of attention - bearing knowledge

by:Waxing     2020-05-27
TIMKEN bearing contact fatigue failure is bearing working surface caused by the effect of alternating stress and failure, and deep spalling is the inner reason of contact fatigue failure. We know that contact fatigue spalling occurs in deep groove ball bearing working surface, often accompanied by fatigue crack, begin from the contact surface of alternating shear stress produces, the biggest flake and then expands to form a different shape, such as dot to pitting corrosion or pitting spalling, peel into small sheet according to the shallow flaking. Due to spalling surface expands gradually, and often to deep extension, forming deep spalling. Refers to the relative sliding friction between the surface abrasion failure lead to constant wear and tear of the working surface of the metal and the failure. Continuous wear will cause bearing parts damaged gradually, and ultimately result in the loss bearing dimensional accuracy and other related issues. Wear may affect the shape change, the increase of fit clearance and working surface morphology change, may affect the lubricant or make its pollution to a certain degree of lubrication function is lost, so that loss of bearing rotating accuracy and will not operate properly. Wear failure is one of the common failure modes of all kinds of bearings, according to the wear and tear is usually divided into one of the most common form of abrasive wear and adhesive wear. TIMKEN bearing failure of the main reason is the TIMKEN bearing itself defects and use overloads when fracture loads more than material strength limit and cause parts called overload fracture. Overload reason mainly is the main engine failure or improper installation. Bearing parts of micro crack, shrinkage cavity, bubbles and large foreign impurities, overheating organizations and local burns and other defects during the impact overload or violent vibration will cause fracture in defect, known as defect fracture. It should be pointed out that the bearing in the process of manufacturing, for raw materials into the factory reinspection, forging and heat treatment quality control, process control through instrument analysis of the existence of the above defects and correct still must strengthen control in the future. But in general, usually most of the deep groove ball bearing failure for overload failure. 1) Keep the bearing and its surrounding clean 2) When used carefully if careless to the bearing to strong impact when using, can cause a scar, indentation, bearing fracture, etc. 3) Use the right tools (4) Note bearing anti-rust avoid use in damp places, and to not make sweat stained, gloves should be worn. 5) The user should be familiar with bearing 6) For deep groove ball bearing using the code of conduct, bearing a safekeeping, bearing and its surrounding clean c b, the size of the installation site and processing quality of test installed d, e, after inspection, remove the g f, maintenance ( Regular inspection) H, a supplement to the lubricant
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