GUIDE TO FULL CERAMIC BEARINGS IN WATER

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 VS. STEEL BEARINGS

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

WILD GOOSE ENGINEERING

BOCA BEARING COMPANY1420 Neptune Dr. Suite ABoynton Beach, FL 33426 U.S.A.Phone: (800) 332-3256Fax: (800) 409-9191Email: info@bocabearings.com