Normal use and common faults in rolling bearings

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Car, dozens of bearing rolling bearing, large and small, including almost all the common types of bearings, rolling bearings hit and damage is more common.

    The rolling bearings are generally mounted on the house, so the inconvenience intuitive check, only the symptoms and first rough judgment, and then remove the check.

The proper use of the rolling bearing is a reliable guarantee to reduce the failure of bearings, extending bearing life, its contents, including proper installation and lubrication.

The following were the requirements for use of rolling bearings and common faults, damage.

The proper use of rolling bearings

1 bearing disassembly

The bearings should be cleaned before installation. Installation, you should use special tools to auxiliary bearing straight and evenly pressed into, do not hand hammer percussion, especially the ban on direct bearing on percussion. When the bearing ring and bore with loose bore shall repair or replace the bearings, not to play in the bearings with surface pitting or pad copper reluctant to use. Bearing demolition should use the appropriate pull-bearing will be pulled out, bearing Do not use chisels, hand hammer perc ussion. slewing bearing suppliers

(2) bearing lubrication

Rolling bearings commonly used lubricant oils and greases. Circumferential speed when the axis is less than 4-5m / s, or parts of the car can not be used lubricating oil, grease lubrication. The advantages of grease lubrication is simple sealing structure of the grease is not easy to drain, affected by temperature, little, add a grease you can use a longer time.

Use of grease should pay attention to two issues, first, according to the vehicle specification requirements, selection of appropriate grades of grease. Automotive water pump bearings, for example, should not use the Sonar grease, because of its poor water resistance. The second is to join the bearing grease in moderation, generally filling the bearing cavity 1/2-l/3 appropriate, too much is not only useless, but also increase the resistanc e of the bearing operation, warming heat. With particular attention to the automotive wheel bearings should be encouraged to "empty hub lubrication, bearings coated with a layer of an appropriate amount of grease can be, is not only a waste of heat and bad, will make the grease heat spillover, which may affect braking performance.

The advantages of the lubricating oil is small frictional resistance, and heat, mainly for speed and working environment of high temperature bearings. Grades of lubricating oil according to vehicle specification requirements to choose from, and then the vehicle maintenance cycle timely replacement, cleaning the organization to release the old oil with new oil, fuel should be added to the marking, or flush with the refueling port (as car specific structural requirements), not more.

Second, the common fault of rolling bearing

The phenomenon of rolling bearing faults are generally two types of First bearing inst allation site temperature is too high, the second is the noise in the bearing operation.

Bearing temperature is too high

Install the bearing parts in the operation of the institutions, are allowed a certain temperature, when the hand stroked institutions shell should not feel hot as normal, and vice versa showed that the bearing temperature is too high. china bearing

Cause of the high bearing temperature: lubricant quality to meet the requirements or deterioration, lubricant viscosity is too high; institutions assembly tight (gap); bearing assembly tight; bearing ring rotation on the shaft or shell; overload ; bearing cage or rolling body fragmentation.

(2) bearing noise

Rolling to allow a slight running sound at work, if the sound or unusual noise or crash, showed that the bearing failure.

Rolling noise of the re ason is more complex, one of the bearing inner and outer rings with surface wear. As a result of this wear and tear, destruction of the bearings and housings, bearings and axes with the relationship, leading to the axis deviated from the correct location, abnormal sound in the high-speed movement of the shaft. When the bearing fatigue, the surface of metal falling off, and also make the bearing radial clearance increases to generate abnormal sound. In addition, the lack of bearing lubrication, the formation of dry friction, and bearing broken and will produce an unusual sound. Bearing wear Songkuang cage loose damage, also have abnormal sound. slewing bearing manufacturers