1 and 2 allow quick determination if a particular lubricant selection is in the right range. How to capture the benefits of thicker lubricants without actually using them or how to best apply ISO VG 68 and thicker oils will be one of our subjects.įigs. They are generally preferred over ISO Grade 32 lubricants.īut not all application methods are possible with ISO viscosity grades higher than VG 32. For process pumps with rolling element bearings, ISO Grade 68 lube oils will allow higher operating loads. In general, thicker oil films will give better pump bearing protection than thinner oil films. ![]() Viscosity is by far the most important property of the lubricants applied to process pump bearings and recent, highly practical texts deal with the issue in great detail (Ref.
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