The Enbridge pipeline across North America saw issues with bearing contamination in Sulzer pumps being sealed with industry standard labyrinths. After Isomags bearing isolators were spec’d in 2008 the contamination was eliminated and since then 366 units have been installed on Sulzer HSB pumps. These units are still running smoothly today.
Pump: Sulzer Speed:1800 RPM
Model: 20x20x34 HSB Lubrication: Oil ring splash
Power: 5,000 HP Problem solved: contamination
Shaft Diameter 1: 2.000 inch Year installed: 2008
Shaft Diameter 2: 5.500 inch Units sold: 366