GRAPHALLOY bearings in pillow block and flange block housings are a maintenance-free solution for wastewater treatment plants. GRAPHALLOY bearings are self-lubricating, nongalling, and dimensionally stable, meaning they can operate for years in tough wastewater applications.

GRAPHALLOY is a graphite-metal alloy. As such, it will not swell when submerged or lose lubrication like other bearing materials. GRAPHALLOY bearings are both reliable and low friction. Available in standard-size pillow blocks and flange blocks, the bearings are easily installed in such wastewater applications as flocculators, clarifiers, aerators and more. 

In one example, GRAPHALLOY bearings in pillow blocks were installed in the Rotating Biological Contractor systems at a wastewater treatment plant. The bearings were on either end of each shaft. One system was always running. Over 20 years later, the bearings were pulled and replaced with new GRAPHALLOY bearings, though the original bearings were found to still be functional, after all those years of tough service.