Nine common cause of bearing failure-Wenzhou Bearing wholesale

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Nine common cause of bearing failure

点击数：6607 日期：2014/4/4

Bearing failure occurs during operation is often the case , so do not make a fuss . Malfunction, and the judgment process is the key. Today we explain the reasons for FAG Bearings common faults . A bearing temperature: When the operation mechanism , the bearing mounting portion to allow a certain temperature, when the stroking mechanism housing , should not feel hot to normal , the bearing temperature indicates otherwise . Bearing temperature reasons: oil quality does not meet the requirements or deterioration, oil viscosity is too high ; institutions assembly tight ( less space ) ; bearing assembly tight ; bearing race rotates the shaft or housing ; overload large ; bearing cage or rolling fragmentation . 2 , bearing noise: Rolling allow slight noise at work, if the noise is too large or unusual noise or crash, it indicates that the bearing has failed. Rolling noise reasons : the more complex one ) is the bearing inner and outer rings with surface wear . Because of this the kind of wear and tear, damage the relationship between the bearing and the housing with the bearing and the shaft , resulting in a deviation from the correct position of the axis , the axis to produce abnormal sound in motion at high speed . When the bearing fatigue , peeling metal surface , but also make the bearing radial clearance increased abnormal sound . 2 ) lack of bearing lubrication , the formation of dry friction , and bearing broken and so will have an unusual sound . 3 ) After the bearing wear Songkuang cage loose damage , will produce abnormal noise bearing damage. When Rolling demolition inspection can determine the cause of bearing failure and damage to the bearing according injury . 3, the raceway surface of the metal peel : the rolling bearing and the inner and outer raceway surfaces are exposed to periodic pulsating effect of the load , resulting in a periodic variation of contact stress . When the number of stress cycles reaches a certain value , or in rolling inner and outer roller track on the work surface fatigue spalling. If the bearing load is too large , will make this fatigue worse. In addition, the bearing is not properly installed , the shaft bent , will produce raceway spalling . Bearing raceway fatigue spalling will reduce running accuracy axis , so that organizations occur vibration and noise. 4 , bearing Burns : Burns bearing raceway , temper rolling on color . The reason is generally insufficient lubrication burns , oil quality does not meet the requirements or deterioration , and bearing assembly too tight and so on. 5 , the plastic deformation: the contact surface of the bearing raceway and roller uneven pits described bearing plastically deformed. The reason is that in a lot of bearing static load or impact loading , local stress over the working surface of the material yield limit, which generally occurs in the low-speed rotation of the bearing . 6, the bearing race cracks : The reason the bearing race may be cracks with tight bearing , the bearing inner ring of foreign or loose , inclusive piece bearing deformation , installation and other adverse bearing surface processing . 7 , the retainer fragmentation : the reason is lack of lubrication , rolling crushing, distortion and other seat 8, the adhesion of the metal cage in the rolling body , the possible reason is that the rolling body is in the card holder or insufficient lubrication.

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