Premium 639zz Deep Groove Ball Bearing for Industrial Machinery

• Customization: Available
• Temperature Range: -30°C to +150°C
• Corrosion Resistance: Excellent (Chemical and Saline Environments)
• Model NO.: 639ZZ
• 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: 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 639ZZ Deep Groove Ball Bearing Stable Performance Hardware & Machinery Use

(Custom configurations available upon request.)

Product Description
The 639ZZ Deep Groove Ball Bearing is designed for hardware machinery and general mechanical equipment requiring durability, smooth rotation, and reliable load capacity.

Manufactured from high-quality bearing steel, this bearing provides excellent wear resistance, dimensional stability, and long service life. The double metal shields (ZZ) help protect internal components from dust and contaminants, ensuring stable lubrication and consistent performance in industrial environments.

 
Key Features
Wear-resistant bearing steel construction
ZZ double metal shields for dust protection
Smooth and stable rotation
Suitable for continuous operation
Reliable performance in hardware machinery
Long service life
 
Typical Applications
Hardware machinery
General mechanical equipment
Small motors and drives
Industrial tools
Transmission and support systems

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

Product Name	Deep Groove Ball Bearing
Bearing Model	639ZZ
Bearing Type	Deep Groove Ball Bearing
Structure	Single Row
Sealing Type	ZZ (Double Metal Shields)
Ring Material	Bearing Steel
Ball Material	Bearing Steel
Inner Diameter (ID)	9 mm
Outer Diameter (OD)	30 mm
Width	10 mm
Lubrication	Grease (Standard)
Precision Grade	ABEC-3 (Standard)
Radial Clearance	C0
Load Capacity	Suitable for Light to Medium Loads
Speed Performance	Suitable for Moderate to High Speed
OEM / Custom Service	Supported

Model No.	S6309ZZ
Bearing Type	Deep Groove Ball Bearing
Material	Stainless Steel (AISI 440C / SUS440C)
Bore Diameter (d)	45 mm
Outer Diameter (D)	100 mm
Width (B)	25 mm
Sealing Type	ZZ (Double Metal Shield)
Clearance	C0 (standard), C3 optional
Cage Material	Stainless steel or reinforced nylon
Lubrication	Grease (food-grade or chemical-resistant available)
Dynamic Load Rating (Cr)	Approx. 37.7 kN
Static Load Rating (Cor)	Approx. 23.2 kN
Limiting Speed (Grease)	Approx. 5,500 rpm
Application	Electroplating machinery, chemical industry equipment, corrosion-prone environments
Temperature Range	-20°C to +180°C (depends on grease type)

Bearing NO.	Bore d mm	O.D D mm	Width B mm	Chamfer r min mm		Ball Complement		Load Rating(KN)
						NO.	Size mm	Dynamic Cr
S634	4	16	5	0.3		8	2.381	1.447
S635	5	19	6	0.3		6	3.969	2.161
S6300	10	35	11	0.6		7	6.35	7.65
S6301	12	37	12	1.0		6	7.938	9.72
S6302	15	42	13	1.0		7	7.938	11.5
S6303	17	47	14	1.5		7	8.731	10.68
S6304	20	52	15	2		7	9.525	12.25
S6305	25	62	17	2		7	11.5	17.25
S6306	30	72	19	2		8	12.0	21.66
S6307	35	80	21	2.5		8	13.494	25.68
S6308	40	90	23	2.5		8	15.081	31.36
S6309	45	100	25	2.5		8	17.462	37.04
S6310	50	110	27	3		8	19.05	47.43
S62200	10	30	14	1.0		8	4.763	3.91
S62201	12	32	14	1.0		7	5.953	5.22
S62202	15	35	14	1.0		8	5.953	5.87
S62203	17	40	16	1.0		8	6.747	7.33
S62204	20	47	18	1.5		8	7.938	9.85

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