Dongguan Lihao Bearing Co., Ltd
Dongguan Lihao Bearing Co., Ltd (BLH Bearing), established in 2005, is located in the global manufacturing hub of Dongguan, China. We specialize in stainless steel bearings, deep groove ball bearings, industrial plastic bearings, ceramic bearings, precision special non-standard bearings, and rubber-coated sliding wheel pulleys, all featuring high performance, low noise, and corrosion resistance.
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Silicon Nitride BearingsSilicon nitride is an important structural ceramic material. It is an ultra-hard material with inherent lubricity and wear resistance, and it is an atomic crystal. It resists oxidation at high
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Zirconia BearingsZirconium dioxide (chemical formula: ZrO2) is the primary oxide of zirconium. It typically appears as white, odorless, and tasteless crystals that are insoluble in water, hydrochloric acid, and
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Hybrid Ceramic BearingsHybrid ceramic bearings are made of stainless steel inner and outer rings, plus ceramic balls. The principle is the same as that of deep groove ball bearings. The following table is a comparison of
why choose us
Excellent Testing Equipment
BLH Bearing has its own independent laboratory, a complete R&D system, and a full range of testing equipment.
The Most Competitive Prices
With 60 sets of automated production lines, BLH Bearing can easily meet large-scale demand and provide the most competitive price guarantee.
One-Stop Solution
We offer one-stop solutions for global transmission equipment needs.
Our Service
Our professional bearing R&D capabilities, manufacturing strength, and 24/7 technical and after-sales service ensure that your transmission business is fully supported — with complete peace of mind.

Ceramic bearings perform the same function as conventional steel bearings, helping the moving parts of your bike turn with ease.
The difference between ceramic and steel bearings is, of course, the material. Made from silicon nitride, ceramic bearings are heralded for their reduced rolling resistance, increased hardness and longevity.
parameter
|
Model |
Hybrid Ceramic Bearings |
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Bearing Rings Material |
POM,PA66,GCR15,SUS420, SUS440,SUS304,SUS316 |
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Ball Material |
ZrO2 SiC Si3N4 |
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Dust cover |
ZZ, 2-RS,Open |
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Accuracy |
ABEC7,ABEC5 |
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Delivery time |
5-10 Days |
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Advantage |
We are direct factory, offering OEM ODM custom service, the most favor price and best quality is guaranteed |
- Improved rigidity, accuracy and precision
- Less operational vibration
- 40% increase in the lifespan of your application
- Higher speeds and lower rolling friction

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.

- Machine tool spindles: State of the art machining processes, like high-speed milling, require a new concept of bearing arrangements for spindles. The application of hybrid bearings has resulted in a remarkable improvement in performance. For many years we have successfully used spindles with hybrid bearings for our own production processes.
- Vacuum Pumps: The reliability of these bearings is of utmost importance, as a breakdown can result in high costs.
- Medical equipment like X-ray tube bearings
- Emergency bearings, like touchdown bearings, for magnetic bearing systems
- Bearings for aeronautic and aerospace applications
We construct the rolling elements in ceramic bearings using several ceramic materials, including
- Silicon nitride (Si3N4)
- Aluminum oxide (Al2O3)
- Zirconium oxide (ZrO2)
- Silicon carbide (SiC)
Ceramic bearing balls are graded based on several parameters, including sphericity, surface finish, and size variation. These grades are standardized internationally, ensuring consistency and reliability across different manufacturers and applications.
Key Parameters for Grading:
Sphericity: The degree to which the ball is perfectly spherical. Higher grades have tighter tolerances for sphericity.
Surface Finish: The smoothness of the ball's surface, which impacts friction and wear.
Size Variation: The permissible deviation in the ball's diameter, with higher grades having more stringent size tolerances.

Common Grades of Ceramic Bearing Balls
Sphericity: ±0.000003 inches
Surface Finish: Extremely smooth
Applications: Aerospace, medical devices, and other high-precision equipment requiring exceptional accuracy and performance.
Sphericity: ±0.000005 inches
Surface Finish: Very smooth
Applications: High-end ball bearings, and precision instruments where high performance is critical.
Sphericity: ±0.000006 inches
Surface Finish: Very smooth, even higher precision than G10
Applications: Ultra-precision instruments, specialized high-performance bearings.
Sphericity: ±0.00001 inches
Surface Finish: High quality, smooth
Applications: High-precision instruments, and high-performance bearings that require reliable performance.
Sphericity: ±0.000025 inches
Surface Finish: Good quality for general precision applications
Applications: Standard precision ball bearings are used in various industrial applications.
Sphericity: ±0.00005 inches or higher
Surface Finish: Suitable for less demanding applications
Applications: General-purpose bearings where ultra-high precision is not necessary.
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.
Our Honor





FAQ
As one of the leading ceramic ball bearings manufacturers and suppliers in China, we warmly welcome you to wholesale bulk ceramic ball bearings for sale here from our factory. All customized bearings are with high quality and competitive price.
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