No.1021E 2025Special Edition on Mobility Technologies Grease Technology to Prevent White Structure Flaking in Rolling Bearings for Engine Auxiliaries |
| Category | TECHNICAL REVIEW |
|---|---|
| Author | K. TAKAHARA K. MIYAKE Material R&D Dept., Research & Development Division |
| Abstract | Rolling bearings used in engine auxiliaries need to be resistant to white structure flaking and have high rust resistance, depending on where they are mounted. The countermeasure to white structure flaking, a type of early failure, is formation of tribofilm using an extreme pressure agent. Rust inhibitors work best when adsorbed on the surface to provide rust resistance. Therefore, it is necessary to understand the phenomena on the surface and design grease that can balance both properties. This study introduces research that clarified the surface reaction process of grease additives and efforts to balance white structure flaking resistance and high rust resistance. |
| Keyword | rolling bearing, white structure flaking, brittle flaking, hydrogen, grease, extreme pressure additive |
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ENGINEERING JOURNAL
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