Premium Silent Miniature Ball Bearings for Smooth Operation

• Customization: Available
• Temperature Range: -30°C to +150°C
• Sealing Options: Open, Metal Shield (Zz), or Rubber Seal (2RS)
• Model NO.: 691
• Load Capacity: High
• Lubrication: Pre-Lubricated with Grease or Oil
• Tolerance: ABEC 1 to ABEC 7
• Noise Level: Low, Suitable for Precision Applications
• Applications: Robotics, Medical Devices, Instruments, RC Models,
• Transport Package: Sealed in Plastic Bags, Packed in Foam-Lined Boxes
• Specification: Chrome Steel (AISI 52100) or Stainless Steel (AISI
• Trademark: LOWIFAR
• Origin: China
• HS Code: 848210
• Production Capacity: 50000PCS/Year

Product Description

Key Features of 69 Series Miniature Ball Bearing

(Custom configurations available upon request.)

Compact Design

Small bore sizes ranging from 1mm to 10mm, ideal for compact and precision applications.
Material Versatility

Available in Chrome Steel (AISI 52100) for durability and Stainless Steel (AISI 440C) for corrosion resistance.
High Precision

Manufactured to tight tolerances for smooth operation, low noise, and minimal vibration.
Sealing Options

Open type for reduced friction.
Metal shields (ZZ) for dust protection.
Rubber seals (2RS) for enhanced protection against contaminants.
High-Speed Capability

Engineered for high rotational speeds while maintaining performance.
Lubrication

Pre-lubricated with high-grade grease, ensuring reduced maintenance and extended service life.
Lightweight

Designed for weight-sensitive applications without compromising performance.
Temperature Resistance

Operates effectively within a temperature range of -20°C to +120°C, suitable for various environments.
Load Capacity

Supports moderate radial and axial loads despite its compact size.
Applications

Widely used in medical instruments, robotics, small electric motors, RC models, and precision tools.

 

Series	69 Series
Material	Chrome Steel (GCr15) / Stainless Steel (AISI 440)
Bore Diameter	3 mm to 30 mm
Outer Diameter	10 mm to 47 mm
Width	Varies by model
Seal Type	Open / ZZ (Shielded) / 2RS (Sealed)
Precision Rating	ABEC-1 / ABEC-3 / ABEC-5
Lubrication	Pre-lubricated with premium grease
Operating Temperature	-30°C to +120°C
Dynamic Load Rating	Based on size and model
Static Load Rating	Based on size and model

Designation				Principal dimensions (mm)					Basic load ratings(N)
With shiled	Open type	With seal W	With seal DD	d	D	B	B1	r(min)	Cr
691	–			1	4	1.6	–	0.1	38
691X	691XZZ			1.5	5	2	2.6	0.15	237
692	692ZZ			2	6	2.3	3	0.15	330
692X	692XZZ			2.5	7	25	3.5	15	385
693	693ZZ			3	8	3	4	0.15	560
694	694ZZ			4	11	4	4	0.15	960
695	695ZZ	695VV	695DD	5	13	4	4	0.2	1080
696	696ZZ1	696VV	696DD	6	15	5	5	0.2	1730
697	697ZZ1	697VV	697DD	7	17	5	5	0.3	1610
698	698ZZ	698WV	698DD	8	19	6	6	0.3	2240
699	699ZZ1	699W	699DD	9	20	6	6	0.3	1720

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