Radial Bearings
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Lubricant selection is of critical importance for the performance of a ball bearing. It affects Life, Torque, Speed, Noise, Grease migration, Outgassing, Temperature effects and rust prevention.
The two basic types of lubricants available are oil and grease.
Oil Lubricants
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Applications that require extremely low torque or narrow range of torque variation, are suited to use oil as a lubricant.
Grease Lubricants
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Greases are comprised of a base oil and a thickener. The life obtained from greases is considerably greater than that of just oil. This is because of a continuous mechanism of lubrication by base oil separation coming from the construction of the thickener.
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Calculating grease life and performance in sealed-for-life ball bearings includes many complicated factors, such that grease life calculation formulas in the industry at this time will likely show different results than actual life.
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In recent years, using plastic material around the bearing has become more common, so the proper selection of lubricant is even more critical to prevent compatibility issues.
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Miniature and instrument ball bearings are typically filled with a 30% (±5%) by volume fill quantity.
Tags:- Lubrication Of Radial Bearings, Types Of Lubricants In Radial Bearings