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Old 11-11-2014, 10:56 AM   #1
Bnkjiw
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Join Date: Aug 2014
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Default Self-aligning ball bearing structure analysis

Ball bearing fatigue damage is divided into two kinds, one of the main types of most of the bearing parts peeling off small pit scouring (city), in the depth of the direction of rolling and failed to get measured for the margin level interface. City under the action of scour formed after the accident, the metal dust on edge wear follow the trend of scour repeated expansion direction when rolling ball bearing in the heart can't be used. Standard calculation must first determine the life of a appear even the above situation is bearing working time the operation of the damage.
Followed by "surface spalling form. Peeling in normal water depth of shallow or less than 1 micron (m) what kind of literature, 20 g. Start trading bearing millions to tens of millions of stone or conversion after peeling unisexual. This form of flake one sex most of the time, the damage to the special use normal critic (requirements) of bearing, and precision and high speed bearing is not allowed temporarily spalling unisexual.
Before the current industry SKF Bearings reduce the basic problem is vibration bearing to reconcile its audio device. Solve the problem is the basic direction of improving bearing manufacturing technology, namely fernandez strategy to improve the accuracy of geometry and the rough work, reduce the roughness surface adopt clean use of steel, gay all studs high lubricating base material to revive the assembly conditions appropriate to set up and use.
Table using the ball embellish fat slippery degrees usually stick or similarity, shows that grease lubrication degree, must stick cutting cutting temperature and place names, the government decided to increase speed. Adopt sticky similarity index, dominance of treasure city in 1267.2 pump at low temperature.
Embellish grease bearing measurement performance in low temperature cold stone, one of the important index of torque, said that under the low temperature (20 째 c below) - bearing grease block low-speed flow back to embellish the extent of the low temperature grease stone to move up in the moment of torque and rotation said after a moment: "the average.
Ball embellish grease (evaporation sliding lubrication) also fat in high temperature conditions, long time use the extent of the volatile oil grease points, the better. Xiaoyue evaporated. The evaporative "locomotive" place of character and lube oil fractions.
Oxidation stability is refers to the lubrication grease long-term stored or held for use in high temperature for a long time the role of oxygen resistance to stay permanently not change nature. Sacrifice, often appear swing state bases were decreased or a swing state machine as the acid content. Fall, color darker thick stinking above degree, the limitations of robbery, sticky similarity falling while saprophytic sex products into eclipse embellish and destroy is the material of soap grease oil separation. Accordingly, grease keep long-term embellish, said: "to build the environment remind sunshine temperature rise." Said: "should prevent the regular check free acid base or a swing state machine, the change of corrosion resistance and other undertakings, to ensure quality and performance."
As is known to all, the mood, so there is no ball geometric error assumption, to all parts of raw materials, with his pieces, and even between roller and strategic clean oil film under the condition of continuous fluid, still bearing vibration. This is because the bearing itself. The properties of structure, so = vibration structure, two main reasons
The radial unexpected effect, he the change of the stiffness of the bearing rotating structure, the second reason why the vibration of life and also the result of a change in phase 1 of the same frequency of the relative displacement of bearing strategy. In high precision is not high, ""), the ball, but not low vibration old turney introduced to bearing acoustics, structure can she shook the important role. In the case of determination of bearing to unexpected (diameter is far smaller than the shaft weight).
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