High-Temperature Pillow Blocks Provide Over 26 Years of Reliable Service

A recent paper mill application reminded us why bearing history matters.

High-temperature pillow blocks operating at 350°F and 30 RPM were found to have been in service since 1999. After reviewing the installation, Graphalloy engineers specified direct replacement assemblies that fit the existing pedestals, allowing eight new units to be installed without modifying surrounding equipment.

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 When textile bearings face heat, caustics, and constant motion, Graphalloy is built to last. Engineered from a graphite-metal alloy, these bearings thrive where grease and polymers fail — from dyeing tanks and ovens to laminators running at 450 °F. The result: no lubrication, no measurable wear, and five-times longer life. For textile plants chasing reliability and uptime, Graphalloy means fewer shutdowns and more production.

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High Heat May Cause Problems for Traditional Bearings

Steel and metals production creates problems for tradtional bearings because of the high heat and heavy loads. GRAPHALLOY® bearings provide a solution to these problems. Here is a really tough application:

The annealing furnace at a Pennsylvania metal manufacturer had an interior temperature in the range of 1200°F (650°C). Bearings supporting the pinch rolls were located outside the furnace walls and reached temperatures up to 750°F (400°C) due to heat transmitted through the furnace wall by the shaft.

The heat transmitted by the shaft through the oven wall to the bearing was causing lubrication failure. In addition, the movement (linear expansion) of the shaft caused problems well beyond the capability of any standard ball or roller bearing arrangement.

GRAPHALLOY high temperature bearings were installed in a metal adapter designed to fit the original bearing housings and solved the problem without a major redesign. With minimal investment, bearings failures and associated maintenance costs were reduced.

Even if your application isn't this tough, GRAPHALLOY bearings can solve your high temperature bearing problems.