Date: 2013-08-22

The necessary maintenance TIMKEN thrust ball bearing on the operation significance

TIMKEN bearing grease is usually apparent viscosity or similar viscosity, in the description of the grease viscosity, temperature and shear rate must be specified. Can adopt similar viscosity index to control the low temperature fluidity and pumpability.
One of the important indexes to measure the low temperature performance of thrust ball bearing grease is low temperature torque, i.e. at low temperature (- 20 DEG C) grease block low speed flow bearing rotation degree, average torque at low temperature grease from the starting torque and rotational torque of 60mm.
Evaporation of thrust ball bearing grease (degree) said grease for long-term use in high temperature conditions, the lubricant volatile degree, evaporation of the smaller the better. Composition of lipid mainly depends on the properties of lubricating oil and fractions.
Oxidation stability is the grease used in long-term storage or long-term high temperature resistance and the role of oxygen, ability to maintain its nature not permanently change. Due to oxidation, often free alkali content reduced or free organic acid content increased, drop down, the appearance of dark colors, abnormal odor, consistency, strength limit, similar to decrease viscosity, formation of corrosion products and the destruction of grease structure of the material, resulting in the separation of oil soap. Therefore, in the long-term storage of lubricating grease, should be stored in dry and ventilated environment, prevent sun exposure, and should change regularly check the free base or free organic acid, corrosion resistance and other projects, in order to ensure its quality and performance.
According to the size specifications, accuracy of location and conditions of use and environmental conditions, with the right bearing is the premise of thrust ball bearing life and reliability of the.
Using the site: combined loads of axial and radial thrust ball bearings for radial load to bear mainly on the bearing, usually in two sets of paired, mainly in the automotive front and rear wheels, a driving bevel gear, gear, reducer and other transmission parts.
TIMKEN bearings in a slightly negative clearance operation, the maximum bearing life. But in fact to maintain bearing the best condition is very difficult to use if certain conditions change, then the negative clearance increases, thereby incurring the thrust ball bearing life is significantly reduced or fever. Therefore, often choose the initial clearance, require clearance operations is only slightly greater than zero.  

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