guide to full ceramic bearings in water€¦ · ppt file · web view · 2017-07-19what are...
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WHAT ARE BEARINGS?• ESSENTIAL MECHANICAL COMPONENTS OF MACHINERY • FACILITATE DESIRED MOTION• LIMIT UNDESIRED MOVEMENT• REDUCE FRICTION
• FULL CERAMIC BEARINGS• NECESSARY IN APPLICATIONS WHERE LIQUIDS ARE PRESENT• WATER PROCESSING, WATER FILTRATION, AND LIQUID HANDLING
COMPARING FULL CERAMIC MATERIALS
• ZIRCONIA OXIDE (ZRO2)
• SILICON NITRIDE (SI3N4)
• ALUMINUM OXIDE (AL2O3)
• SILICON CARBIDE (SIC)
CERAMIC BEARING LIFESPAN
• GENERALLY EXTREMELY DURABLE
• TEMPERATURE AND CORROSION RESISTANT
• LONGER LIFESPAN THAN STEEL OR HYBRID
• RARELY BECOMES DISTORTED UNDER LOAD
• MORE BRITTLE HOWEVER
OTHER KEY FACTORS
• ELECTRICAL INSULATION WITH CERAMIC BEARINGS
• IMPROVED PERFORMANCE OF BEARINGS IN WATER AND OTHER
LIQUIDS
• RESISTANCE TO CORROSION
• TEMPERATURE CONSIDERATIONS
RESISTANCE TO FRACTURE UNDER LOAD
Fracture ToughnessZirconia Oxide - 10 MPA*m1/2 Silicon Nitride - 6.2 MPA*m1/2
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