Stainless Steel Ball Bearings 6703ug Open Ultra-Smooth Custom Spinner Bearing

• Customization: Available
• Temperature Range: -30°c to +150°c
• Corrosion Resistance: Excellent (Chemical and Saline Environments)
• Model NO.: 6703UG
• Load Capacity: High
• Lubrication: Pre-Lubricated with Grease or Oil
• Tolerance: ABEC 1 to ABEC 7
• Noise Level: Low, Suitable for Precision Applications
• Transport Package: Sealed in Plastic Bags, Packed in Foam-Lined Boxes
• Specification: Gcr15
• 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 Stainless Steel Ball Bearings 6703UG Open Ultra-Smooth Custom Spinner Bearing

(Custom configurations available upon request.)

Ultra-Smooth Rotation

Engineered for extremely low friction and noise, providing exceptionally smooth and long spin times — ideal for high-performance finger spinners and EDC toys.
Open-Type Design

Open structure without seals minimizes rotational resistance and allows for easy cleaning and maintenance, maximizing responsiveness and tactile feedback.
Precision Customization (UG Type)

Custom inner race geometry and optimized ball-to-raceway fit for enhanced balance and vibration control during high-speed rotation.
Corrosion-Resistant Stainless Steel

Made from SUS440C or equivalent high-grade stainless steel for excellent rust resistance and durability, even in humid or outdoor environments.
High-Speed Stability

Designed for stable performance at high RPM, ensuring consistent, wobble-free operation even under prolonged use.
Compact & Lightweight

Ultra-thin profile (17×23×4mm) fits in slim, low-profile spinner designs without compromising strength or reliability.
OEM Ready

Supports custom engraving, packaging, or lubricant options upon request for branded or special-use applications.

 

Model Number	6703UG
Bearing Type	Deep Groove Ball Bearing – Open (No seals)
Structure	Ultra-thin, non-standard UG design
Inner Diameter (ID)	17 mm
Outer Diameter (OD)	23 mm
Width (B)	4 mm
Material	SUS440C Stainless Steel
Ball Material	SUS440C or GCr15 (Chrome Steel) – optional
Cage Material	Stainless Steel or Nylon (optional)
Precision Grade	ABEC-3 / ABEC-5 / ABEC-7 (as required)
Ball Grade	G10 / G16
Sealing Type	Open (no ZZ or RS seals)
Lubrication	Dry (for spinners) / Light Oil / Grease
Speed Capability	Up to 60,000 RPM (depending on lubricant)
Noise Level	Low Noise (Z2 / Z3 available)
Application	Finger Spinners, EDC Toys, Precision DIY
Customization	Logo engraving, packaging, clearance, etc.

Bearing No.					Rated Load kN		Limit Speed rpm
Open	With Shields		With Seals		Cr	Cor	Grease		Oil
							RS,2RS	Open,Z,ZZ	Open,Z,ZZ
6700	6700-Z	6700-ZZ	6700-RS	6700-2RS	572	304	22000	30000	36000
6701	6701-Z	6701-ZZ	6701-RS	6701-2RS	935	527	18000	27000	33000
6702	6702-Z	6702-ZZ	6702-RS	6702-2RS	870	499	15000	24000	29000
6703	6703-Z	6703-ZZ	6703-RS	6703-2RS	930	640	12000	21000	26000
6704	6704-Z	6704-ZZ	6704-RS	6704-2RS	1040	558	9000	18000	23000
6705	6705-Z	6705-ZZ	6705-RS	6705-2RS	1090	843
6706	6706-Z	6706-ZZ	6706-RS	6706-2RS	1150	951
6707	6707-Z	6707-ZZ	6707-RS	6707-2RS
6708	6708-Z	6708-ZZ	6708-RS	6708-2RS
6709	6709-Z	6709-ZZ	6709-RS	6709-2RS
6710	6710-Z	6710-ZZ	6710-RS	6710-2RS

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