The desire for small maintenance costs and extended service intervals promotes the development of life time lubricated systems. Therefore consistent fluids (greases) are mainly used. Their limitations, represented in characteristic value (speed*mean bearing diameter) clearly increased up to 2,5*106 min−1*mm. However possibilities, potentials and limitations for radial working sealing systems are still unknown. The following shows a possibility for test arrangement and measurement to analyse wear concerning rotary shaft sealing systems in grease application.

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