Full Ceramic Bearings

ISK BEARINGS ceramic bearings feature high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetic insulation, and oil-free self-lubrication, allowing them to operate reliably in harsh and specialized environments. These outstanding characteristics make ceramic bearings widely used in industries such as semiconductor, aerospace, maritime, petroleum, chemical, automotive, metallurgy, textiles, pumps, medical equipment, and defense, becoming the ideal choice for new material applications in various hardware equipment across industries.

The ceramic bearings produced by ISK BEARINGS mainly use zirconia (ZrO2) and silicon nitride (Si3N4) as materials for the inner and outer rings and rolling elements. The cages are made of materials such as PTFE, PEEK, UPE, PVDF, and PA66.

ZrO2 Ceramic Bearings

Zirconia ceramic bearings utilize ZrO2 (Zirconia) as the main material for the bearings, featuring excellent hardness, high strength, and wear resistance. They also exhibit high corrosion resistance in most acidic and alkaline environments. Zirconia ceramic bearings are commonly used in high-temperature environments, such as turbochargers, dental tools, and cutting equipment.

Si3N4 Ceramic Bearings

Silicon Nitride ceramic bearings utilize Si3N4 (Silicon Nitride) as the main material for the bearings. They possess excellent mechanical properties, including high strength, high-temperature resistance, and high thermal conductivity. They also have a low coefficient of friction and excellent thermal stability. Silicon Nitride ceramic bearings are commonly used in demanding environments, such as aerospace, semiconductor manufacturing, and chemical processing.

Precautions for Operating with Full Ceramic Bearings

Susceptible to impact and extreme thermal stress.
Compared to metal materials, full ceramic bearings have lower toughness.
Must be used in strong acid, strong alkali, and other chemical environments. Please contact ISK BEARINGS.

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Comparison Table of Full Ceramic Bearing Materials

Rings/Balls/Cage	Load capacity	Limiting speed	Anti-corrosion	Long-time working temp.	Used costs
ZrO2/ZrO2/PA	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️	90°C	⭐️⭐️⭐️⭐️⭐️⭐️
ZrO2/ZrO2/PTFE	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️⭐️	180°C	⭐️⭐️⭐️⭐️⭐️⭐️
ZrO2/ZrO2/PEEK	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	260°C	⭐️⭐️⭐️⭐️⭐️⭐️
ZrO2/ZrO2/PI	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	300°C	⭐️⭐️⭐️⭐️⭐️⭐️
ZrO2/ZrO2/No cage	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️⭐️	400°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Si3N4/Si3N4/PTFE	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️⭐️	180°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Si3N4/Si3N4/PEEK	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️	260°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Si3N4/Si3N4/PA	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️	90°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Si3N4/Si3N4/No cage	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️⭐️	1100°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Si3N4/Si3N4/PI	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️⭐️	⭐️⭐️⭐️⭐️⭐️	300°C	⭐️⭐️⭐️⭐️⭐️⭐️⭐️