Explanation of micro lead generation in external cylindrical plunge grinding of radial shaft sealing counterfaces

Abstract

This article examines the generation of micro lead during cylindrical plunge grinding of sealing counterfaces for rotary shaft seals. Micro lead can cause fluid leakage through the sealing contact, impacting sealing performance. Preliminary investigations indicate that dressing parameters influence micro lead formation. This publication presents new insights into this phenomenon, aiming to enhance industrial sealing reliability by optimizing sealing counterfaces for demanding applications, such as E-powertrains with high sliding speeds and temperatures. The presented findings underscore the value of using specifically optimized grinding and dressing parameters for the manufacturing of sealing counterfaces.