Full Ceramic Silicon Nitride Bearings 6900 6901 6902 6903 6904 6905 6906

Product Description

Key Features of 6900 6901 6902 6903 6904 6905 6906 6907 Full Ball Si3N4 Ceramic Bearings

(Custom configurations available upon request.)

Key Features
Full ball design for higher load capacity
High temperature resistance
Excellent corrosion and chemical resistance
Low friction and high-speed capability
Non-magnetic and electrically insulating
Lightweight with high hardness
Long service life in harsh environments

Typical Applications
Chemical processing equipment
Semiconductor manufacturing equipment
High-speed electric motors
Aerospace components
Medical devices
Precision instruments
High-temperature industrial machinery

Model	Inner Diameter (ID)	Inner Diameter (ID)	Outer Diameter (OD)
6900	10 mm	22 mm	6 mm
6901	12 mm	24 mm	6 mm
6902	15 mm	28 mm	7 mm
6903	17 mm	30 mm	7 mm
6904	20 mm	37 mm	9 mm
6905	25 mm	42 mm	9 mm
6906	30 mm	47 mm	9 mm
6907	35 mm	55 mm	10 mm

High-Precision Ceramic and Stainless Steel Bearings Manufacturer

The 6900 / 6901 / 6902 / 6903 / 6904 / 6905 / 6906 / 6907 Full Ceramic Bearings are manufactured entirely from Silicon Nitride (Si3N4) ceramic material, including the inner ring, outer ring, and rolling balls.

With a full ball structure (without cage), these bearings provide higher load capacity and improved rigidity compared with standard ceramic bearings. They are specially designed for high temperature, corrosive, and high-speed operating environments.

Silicon Nitride ceramic bearings offer excellent hardness, low density, superior wear resistance, and outstanding chemical stability, ensuring reliable performance in harsh industrial conditions.

Due to their non-magnetic, electrically insulating, and corrosion-resistant properties, these bearings are widely used in chemical equipment, semiconductor machinery, aerospace systems, and high-speed precision equipment.

Bearing Type	Ceramic Ball Bearing
Structure	Deep Groove Ball Bearing
Material	Silicon Nitride (Si3N4)
Cage Material	PTFE / PEEK / Ceramic
Precision Grade	ABEC-5 / ABEC-7
Lubrication	Dry / Grease / Oil
Temperature Resistance	Up to 800°C (material level)
Feature	High Speed / Corrosion Resistant
OEM / ODM	Available

Designation				Principaldimensions (mm)					Basic load ratings(N)
With shiled	Open type	With seal VV	With seal DD	d	D	B	B1	r(min)	Cr
623	623ZZ	–	–	3	10	4	4	0.15	630
624	624ZZ			4	13	5	5	0.2	1300
625	625ZZ1	625VV	625DD	5	16	5	5	0.3	1730
626	626ZZ1	626VV	626DD	6	19	6	6	0.3	2340
627	627ZZ	627VV	627DD	7	22	7	7	0.3	3300
628	628ZZ	628VV	628DD	8	24	8	8	0.3	3350
629	629ZZ	629VV	629DD	9	26	8	8	-0.6	4550

Specification

Applications
Aerospace: High-performance bearings for aircraft engines and systems.
Automotive: Durable solutions for engines, transmissions, and electric vehicles.
Medical Equipment: Precision bearings for surgical tools and diagnostic devices.
Industrial Machinery: Robust bearings for heavy-duty operations in manufacturing and production.
Renewable Energy: Specialized bearings for wind turbines and solar tracking systems.
Food & Beverage: Corrosion-resistant bearings for hygienic and reliable operations.
 
Key Configurations
Ceramic Bearings: Offering high temperature resistance, low friction, and excellent corrosion resistance.
Custom Designs: Tailored bearing solutions to meet specific application requirements.
High-Precision Tolerances: Ensuring consistent performance in demanding applications.
Maintenance-Free Options: Sealed bearings for enhanced durability and reduced downtime.

Production Process

1) Premium-grade ceramic and stainless steel materials are sourced to meet stringent quality standards.
2) Advanced CNC and grinding machines shape the bearing components to achieve tight tolerances and smooth finishes.
3) Precision polishing ensures low friction and optimal performance for both ceramic and stainless steel bearings.
4)Bearings are carefully assembled in a clean, controlled environment to maintain integrity and precision.
5) Rigorous quality checks, including dimensional accuracy, surface finish, and load testing, are performed to ensure every bearing meets or exceeds industry standards.

Ceramic bearing

Stainless steel bearing

Hybrid ceramic bearing

Many years of experience in bearing business

After Sales Service

Technical Support: Expert guidance for installation, maintenance, and troubleshooting to ensure optimal performance.
Warranty Assurance: Coverage for manufacturing defects, providing peace of mind with every purchase.
Customized Solutions: Tailored advice and modifications to address specific operational challenges or requirements.
Prompt Response: Dedicated support team available to address inquiries and resolve issues quickly and effectively.

Company Profile

At LOWIFAR Bearings, we specialize in designing and manufacturing a wide range of precision, high-quality ball bearings and tapered roller bearings. Our products are designed to meet the demands of heavy agricultural machinery, textile machinery, various engineering applications, motors, automobiles, computers, electric appliances, power tools, pumps, and more.

With over ten years of experience in bearing production, LOWIFAR is a trusted manufacturer dedicated to providing custom-made bearing solutions to meet your unique requirements.

Our experienced and professional team ensures that we deliver products of the highest quality. We are proud to have exported our bearings to numerous countries and regions worldwide, including Europe, North America, India, Thailand, South Korea, Mexico, Turkey, Argentina, Russia, and many others.

Our bearings have earned a strong reputation for reliability and performance among our global customer base. We invite customers, business partners, and friends from all over the world to connect with us for mutually beneficial cooperation.

FAQ

1. What are ceramic bearings?
Ceramic bearings are bearings made from advanced ceramic materials such as Zirconia (ZrO2) or Silicon Nitride (Si3N4). They are known for their high strength, wear resistance, and ability to perform in extreme conditions.

2. What are the advantages of ceramic bearings over steel bearings?
Ceramic bearings offer several advantages, including:

  Higher Durability: Resistant to wear, corrosion, and high temperatures.
  Lighter Weight: Up to 40% lighter than steel bearings.
  Non-Magnetic & Electrically Insulating: Ideal for sensitive applications.
  Low Friction: Reduces energy loss and heat generation.
3. In which industries are ceramic bearings commonly used?
Ceramic bearings are widely used in:

  Packaging equipment
  Renewable energy (e.g., wind turbines)
  Aerospace and automotive
  Medical devices
  Chemical processing
  High-precision tools
4. Can ceramic bearings handle high temperatures?
Yes, ceramic bearings are highly resistant to heat and can operate in temperatures exceeding 1,000°C, depending on the material used.

5. Are ceramic bearings suitable for corrosive environments?
Absolutely! Ceramic bearings are non-reactive to most chemicals, making them ideal for use in highly corrosive environments.

6. What is the lifespan of ceramic bearings?
Ceramic bearings typically last much longer than steel bearings due to their wear resistance and durability. However, the exact lifespan depends on the operating conditions and maintenance practices.

7. How do I maintain ceramic bearings?
Ceramic bearings require minimal maintenance, but to ensure longevity:

  Use the correct lubrication when necessary.
  Keep them clean and free from contaminants.
  Follow proper installation procedures.
8. Do you provide customized ceramic bearings?
Yes, we offer tailored ceramic bearing solutions to meet your specific application requirements. Contact us to discuss your needs.

9. What sizes and types of ceramic bearings do you offer?
We supply a wide range of sizes and configurations, including ball bearings, roller bearings, and hybrid bearings. Check our product catalog or contact us for more details

10. How can I place an order or request a quote?
Simply visit our Contact Us page, fill out the inquiry form, or reach out to us directly via email or phone. Our team will respond promptly with the information you need