JARBLUE Zirconia Ceramic Bearings R2 R4 R6 R8 R12 R16 2RS

JARBLUE High-Performance Zirconia Ceramic Bearings

Upgrade your machinery and precision equipment with these JARBLUE Zirconia Full Ceramic Bearings. Available in a wide range of imperial sizes — R2, R4, R6, R8, R12, and R16 — these bearings are engineered for smooth, low-friction operation in demanding environments. Whether you're building RC cars, skateboards, inline skates, CNC machines, or industrial equipment, these ceramic bearings deliver outstanding performance and durability. Made in Mainland China.

Size Reference Chart

Key Features

• Zirconia Ceramic Material: Superior hardness and corrosion resistance compared to standard steel bearings — ideal for wet, chemically harsh, or high-speed environments.
• Multiple Seal Options: Available in open (CE) and double-rubber-sealed (2RS) configurations to suit different operating conditions.
• Customizable: Custom sizing and configurations available upon request.
• Wide Application Range: Suitable for RC vehicles, CNC equipment, skateboards, inline skates, drones, medical devices, and industrial machinery.
• Low Friction & Quiet Operation: Precision-ground ceramic balls ensure smooth, quiet rotation with minimal heat generation.
• Non-Magnetic: Ideal for use in magnetic-sensitive applications such as motors and electronic equipment.
• Lightweight: Zirconia ceramic is significantly lighter than steel, reducing rotational mass for improved efficiency.

Specifications

• Brand: JARBLUE
• Material: Zirconia Ceramic (ZrO₂)
• Models Available: R2, R4, R6, R6-2RS, R8, R8-2RS, R12, R16, CE, 2RS
• Customized: Yes
• Origin: Made in Mainland China

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Frequently Asked Questions

Q: What is the difference between CE (open) and 2RS (double-sealed) ceramic bearings?

A: CE refers to open-style bearings with no seals, allowing for easier lubrication access and suited to clean, dry environments. 2RS bearings feature double rubber seals on both sides, keeping contaminants like dust and moisture out — making them ideal for outdoor, wet, or dirty operating conditions.

Q: Are JARBLUE zirconia ceramic bearings suitable for high-speed applications?

A: Yes. Zirconia ceramic bearings have a higher hardness rating and lower density than steel, enabling them to operate at higher speeds with reduced friction and heat. They are widely used in CNC spindles, RC vehicles, drones, and other high-speed precision equipment.

Q: Can these bearings be used as a direct replacement for standard steel bearings?

A: Yes. The imperial sizes (R2, R4, R6, R8, R12, R16) are dimensionally compatible with standard imperial ball bearings, allowing for direct drop-in replacement in most applications. Always verify the exact inner diameter, outer diameter, and width match your requirements using the size chart above.

Q: Is customization available for different sizes or seal types?

A: Yes, JARBLUE offers customized bearing configurations. Contact us with your required specifications for inner diameter, outer diameter, width, and seal type, and we will work to accommodate your needs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.