API-610 is the most widely used pump standard in the petrochemical and refining industries. It includes experience-based recommendations for lubricant applications and one of those recommendations rel..
API-610 is the most widely used pump standard in the petrochemical and refining industries. It includes experience-based recommendations for lubricant applications and one of those recommendations relates to oil-mist systems. The API standard asks for oil mist to be routed through the bearings, as shown in Fig. 1, instead of past the bearings (Fig. 2). Although intended for pumps, this same recommendation will work equally well for electric motor rolling element bearings. The resulting diagonal through-flow route guarantees adequate lubrication; however, oil mist entering and exiting on the same side may allow some of the mist to leave without first wetting the rolling elements. Through-flow
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