First, how chooses the lubricant?

The lubrication has the extremely important influence to the INA bearing revolution and the life, here introduces the choice lubricant briefly to you the principle of equality.The lubricant by the base oil, the thickening agent and the chemical additive is made, the different type and the identical type different trademark lubricant performance difference is very big, the permission revolving limit is different, when choice pays attention by all means must.The lubricant performance mainly decided by the base oil that, the general low viscosity base oil is suitable for the low temperature, high speed, macroviscosity being suitable in high temperature, high load.The thickening agent is also relating the lubricity, the thickening agent water resistance decision lubricant water resistance.In principle, the sign different lubricant cannot mix, moreover, even if is the homogeneous thickening agent lubricant, because also can the chemical additive different bring the bad influence mutually.

Second, before the bearing installment must clean? 　
The bearing surface spreads has the pickling oil, you must use the clean gasoline or the petroleum careful clean, again spreads clean high quality or the high speed high temperature lubricating grease only then installs the use.The cleanliness to the rolling bearing life and the vibration noise influence is extremely big.But we must remind you are specially: All seals up the bearing not to have to clean refuels.

Third, how installs and the disassemblage?
Installs when directly do not hammer the INA bearing end surface and the non-stress surface, should by the briquetting, the sleeve or other the erecting tool (work clothes) to cause the bearing even stress, is sure not through the rolling body driving force installment.If the installment surface spreads the lubricating oil, will cause the installment to be smoother.If has coordinated full big, should put in the bearing the mineral oil internal heating after 80~90℃ to install as soon as possible, controls the oil temperature not to surpass strictly 100℃, prevented tempering effect degree of hardness reduces with the influence size restoration.Encounters the difficulty when the disassemblage, suggested you use the lifter careful to fall on the hot oil to external bracing at the same time to the inner loop in, the quantity of heat can make the rolling bearing inner loop to inflate, thus causes it easily to fall off.

Fourth, to installs the surface and installs the place request?
Yes.If in the INA bearing has foreign matter and so on iron filings, burr, dust enters, will cause the bearing when the revolution has the noise and the vibration, even can damage the roller conveyer and the rolling body.Therefore, in installs in front of the bearing, you must guarantee the installment surface and install the environment clean.

Fifth, when lubricates the bearing, the fat spreads more the better?
When lubricates the INA bearing, the fat spreads more the better, this is a common wrong concept.The bearing and in the bearing room excessively many fat will create the fat the excessive agitation, thus will have the extremely high temperature.Rolling bearing backfill lubricant quantity take fills bearing interior space 1/2~1/3 as suitable, high speed when should reduce 1/3.

Sixth, the bearing radial direction windage is smaller more?
Is not all INA bearing all requests the smallest work windage, you must select the appropriate windage according to the condition.GB code in 4604-93, the rolling bearing radial direction windage altogether divides five group of - 2 group, 0 group, 3 group, 4 group, 5 groups, the windage value in turn from small to big, 0 groups are the standard windages.The basic radial direction windage group is suitable for the general revolution condition, the conventional temperature and the commonly used full coordination; Rolling bearing which in the high temperature, high speed, the low noise, the low friction and so on under the special condition work then selects the big radial direction windage suitably; To the precision main axle, the engine bed main axle and so on selects the small radial direction windage suitably with the bearing;
 
May maintain the few work windage regarding the roller bearings.Moreover, does not matter the windage regarding the separation bearing; Finally, after the bearing installing equipment work windage, must be smaller than the installment before primitive windage, because the bearing must withstand certain load revolving, but also has the elastic amount of deformity which the INA bearing coordination and the load produces.

After the bearing installment had ended, in order to inspect installs whether correctly, has to carry on the revolution inspection.The small machinery may use hand revolving, confirmed whether revolves smoothly.The inspection projects have the revolution which because of the foreign matter, the scar, the indentation creates to be impeded, is not good because of the installment, the installment place processing not good produces the moment of force is unstable, because the windage excessively is small, the moment of force which the wiring error, the seal friction causes oversized and so on.If does not have exceptionally may start the power revolution.

The power revolution, starts from the idling low speed, the slowly enhancement to decides the condition the fixed revolution.In the test runs inspects the item is, whether has unusual acoustic, INA bearing temperature change, lubricant divulging or color deterioration and so on.If discovers unusually, should stop revolving immediately, inspects the machinery, when the necessity must dismantle the bearing inspection.

The bearing temperature, may act according to the bearing seat generally exterior temperature extrapolation.But the use oil hole direct survey bearing addendum circle temperature is more accurate.The rolling bearing temperature, starts from the revolution to elevate gradually, after usual 1~2 hours temperature control.If the bearing installment is not good, the temperature can rise suddenly, appears the unusual high temperature.Its reason such as lubricant excessively are many, the INA bearing windage excessively is small, the installment not not good, the packing assembly friction oversized and so on.

The INA bearing rotation sound with inspections and so on stethoscope, has the strong metallic noise, the different sound, showing and so on irregular sound is unusual.Its reason has the lubrication not good, the axis or the bearing seat precision not good, the bearing damage, the foreign matter invasion and so on.




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