Advanced PA66 Bearings for Underwater Robotics and Equipment

• Customization: Available
• Max Operating Temp.: ~120°C (Short-Term) / 100°C (Continuous)
• Corrosion Resistance: Excellent (Chemical and Saline Environments)
• Model NO.: R12
• Load Capacity: High
• Lubrication: Pre-Lubricated with Grease or Oil
• Tolerance: ABEC 1 to ABEC 7
• Noise Level: Low, Suitable for Precision Applications
• Structure: Open Type
• Material - Outer Ring: PA66 (Polyamide 66, Nylon)
• Ball Material: Glass Balls (Non-Magnetic, Anti-Rust)
• Transport Package: Sealed in Plastic Bags, Packed in Foam-Lined Boxes
• Specification: stainless steel
• Trademark: LOWIFAR
• Origin: China
• HS Code: 848210
• Production Capacity: 50000PCS/Year
• Package Size: 10.00cm * 2.00cm * 10.00cm
• Package Gross Weight: 0.020kg

Product Description

Key Features of PA66 Plastic Bearing R12 Open-Type Deep Groove Ball Bearing

(Custom configurations available upon request.)

Bearing Type: R12 Open-Type Deep Groove Ball Bearing
Material: High-strength PA66 (Nylon) outer ring
Rolling Elements: Glass balls, corrosion-resistant and non-magnetic
Design: Open type, allowing better water flow and easy inspection
Anti-Rust: Ideal for underwater or humid environments where standard metal bearings would corrode
Lightweight & Non-conductive: Suitable for marine, robotics, or electronic applications
Application Examples:

Underwater robots and drones (ROV/AUV)
Marine equipment
Aquatic research tools
Corrosion-sensitive motion systems

Bearing Type	Deep Groove Ball Bearing
Model	R12 (Inch size)
Structure	Open type
Inner Diameter (d)	19.05 mm (3/4 inch)
Outer Diameter (D)	41.28 mm (1-5/8 inch)
Width (B)	11.11 mm (7/16 inch)
Material - Outer Ring	PA66 (Polyamide 66, Nylon)
Cage Material	PA66
Ball Material	Glass balls (non-magnetic, anti-rust)
Shield/Seal Type	None (Open structure)
Max Operating Temp.	~120°C (Short-term) / 100°C (Continuous)
Corrosion Resistance	Excellent (suitable for underwater use)
Load Capacity	Light to Medium (depends on glass ball rating)
Speed Limit	~3000–5000 RPM (application dependent)
Features	Lightweight, non-conductive, rust-proof
Applications	Underwater robots, pumps, marine sensors, lab tools

Bearing NO.	Bore d mm	0.D D mm	Width B mm	Chamfer r min mm	Ball Complement		Load Rating(KN)
					NO.	Size mm	Dynamic Cr	Static   Cor
SR168	6.350	9.525	3.175	0.1			0.268	0.136
SR188	6.350	12.700	3.175	0.15	8	1.588	0.830	0.370
SR4	6.350	15.875	4.978	0.3	8	2.381	1.136	0.558
SR4A	6.350	19.050	7.14	0.4	6	3.969	2.175	1.163
SR6	9.525	22.225	5.556	0.4	7	3.969	2.560	1.350
SR8R	12.700	28.575	6.350	0.4	8	4.762	3.930	2.230
SR8-7	11.113	28.575	6.350	0.4	8	4.762	3.912	2.245
SR10	15.875	34.925	7.142	0.6	10	4.762	4.620	2.790
SR12	19.050	41.275	7.938	0.6	9	6.350	7.240	4.463
S99502H	15.875	34.925	7.938	0.8	8	5.593	4.605	2.774
SR14	22.225	47.625	9.525	0.6	10	6.350	7.740	4.960
SR16	25.400	50.800	9.525	0.6	10	6.747	7.740	5.160
SR18	28.575	53.975	9.525	0.6	9	7.938	10.180	6.910
SR3	4.763	12.7	3.967	0.3	8	2.0	1.301	0.488
SR133	2.380	4.763	3.175	0.3	8	1.588	1.89	0.6
SR166	4.763	9.525	3.0	0.3	8	2.0	0.709	0.272

High-Precision Ceramic and Stainless Steel Bearings Manufacturer

Delivering exceptional quality and precision, our ceramic and stainless steel bearings are engineered to meet the diverse needs of industries worldwide. Trusted for durability and performance, we are your reliable partner in advanced bearing solutions.

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