Grease lubrication of bearings in humid environments

Core Tip: In a humid environment, condensate can form in the rolling bearing and cause corrosion, resulting in shortened bearing life. By carefully selecting the grease to lubricate, the effect of condensation moisture can be reduced.
In a humid environment, condensate forms in the rolling bearing and causes corrosion, resulting in a shortened bearing life. By carefully selecting the grease to lubricate, the effect of condensation moisture can be reduced. The fat thickened with sodium soap has a strong ability to absorb water vapor, but softens due to too much moisture absorption, and flows out of the bearing; although lithium soap does not absorb moisture, it is added by appropriate additives. Provides good corrosion protection, and some greases containing synthetic thickeners also provide excellent corrosion resistance and extend bearing life.

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Precautions for measuring radial clearance of bearings

Core Tips: (1) Use special instrument measurement method as much as possible; (2) Use hand-push measurement to require measurement people to have higher measurement skills. This method has a large measurement error, especially the clearance is on the side.
(1) Use special instrument measurement methods whenever possible;

(2) Measurement by hand is required to have higher measurement skills. This method has a large measurement error, especially when the clearance is in the edge state, which is easy to cause an error. In this case, the instrument measurement shall prevail;

(3) When measuring the feeler gauge, it shall be operated in accordance with the standard regulations, and shall not be measured by rolling the roller from the feeler gauge;

(4) During the measurement process, the ball should be guaranteed to fall into the bottom of the ditch; the closed bearing should be measured before closing; when using a loaded instrument, the measured value should also be reduced by the amount of play increase caused by the load.

(5) For multi-row bearings, it is required that the clearance of each column is qualified, and the arithmetic mean of each column clearance is taken as the radial clearance of the bearing.

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