SMF52zz/RS Sf52 Open-Type Stainless Steel Miniature Flanged Deep Groove Ball Bearing

• Customization: Available
• Temperature Range: -30°c to +150°c
• Sealing Options: Open, Metal Shield (Zz), or Rubber Seal (2RS)
• Model NO.: SMF52
• 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
• Package Size: 10.00cm * 2.00cm * 10.00cm
• Package Gross Weight: 0.020kg

Product Description

Key Features of SMF52ZZ/RS & SF52 Flanged Stainless Steel Bearings:

(Custom configurations available upon request.)

Ultra-Miniature Design: Ideal for precision applications with tight space constraints, such as micro motors, medical instruments, and robotics.
Flanged Outer Ring: Built-in flange simplifies axial positioning and improves mounting stability in compact housings.
Shielded/Sealed/Open Options:

SMF52ZZ: Double metal shields for protection against dust and low-friction rotation.
SMF52RS: Rubber seal for better dust and moisture resistance.
SF52: Open design for minimal friction and ultra-low torque.
Corrosion Resistance: Made from 440C stainless steel, suitable for humid, corrosive, or clean-room environments.
High-Speed, Low Noise: Precision-grade balls and raceways allow stable, quiet, high-speed operation.
Customizable: Grease type, cage material, tolerance grade, and logo printing available upon request.

Wide Applications: Used in 3D printers, power tools, home appliances, RC devices, medical devices, and conveyors.

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

Model	SMF52ZZ / SMF52RS / SF52
Bore Diameter (d)	2 mm
Outer Diameter (D)	5 mm
Width (B)	2.5 mm
Flange Outer Diameter	≈ 5.8 mm
Shield/Seal Type	ZZ (Metal Shields) / RS (Rubber Seal) / Open
Material	440C Stainless Steel
Cage Material	Stainless Steel / Nylon
Precision Grade	ABEC-3 / ABEC-5
Lubrication	Pre-lubricated / Dry / Custom Grease
Temperature Range	-30°C to +200°C
Application Industries	Robotics, Medical Devices, Micro Motors, Smart Devices

Model	Inner Diameter (mm)	Outer Diameter (mm)	Width (mm)	Flange Diameter (mm)
MF63	3	6	2.5	7.2
MF74	4	7	2.5	8.2
MF85	5	8	2.5	9.2
MF105	5	10	3	11.2
MF106	6	10	3	11.2
MF128	8	12	3.5	13.5
MF148	8	14	4	15.5
MF148-2RS	8	14	4	15.5
MF148-ZZ	8	14	4	15.5
MF63	3	6	2.5	7.2
MF74	4	7	2.5	8.2
MF85	5	8	2.5	9.2
MF105	5	10	3	11.2
MF106	6	10	3	11.2
MF128	8	12	3.5	13.5
MF148	8	14	4	15.5
MF148-2RS	8	14	4	15.5
MF148-ZZ	8	14	4	15.5

MF85	MF85ZZ	5	8	9.2	2	2.5	0.6	0.6	0.1
MF95	MF95ZZ		9	10.2	2.5	3	0.6	0.6	0.15
MF105	MF105ZZ		10	11,211.6	3	4	0.6	0.8	0.15
MF115	MF115ZZ		11	12.6	4	4	0.8	1	0.15
F685	F685ZZ		11	12.5	3	5	0.8	1	0.15
F695	F695ZZ		13	15	4	4	1	1	0.2
F605	F605ZZ		14	16	5	5	1	1	0.2
F625	F625ZZ		16	18	5	5	1	1	0.3
F635	F635ZZ		19	22	6	6	1.5	1.5	0.3
MF106	MF106ZZ	6	10	11.2	2.5	3	0.6	0.6	0.15
MF126	MF126ZZ		12	13,213.6	3	4	0.6	0.8	0.2
F686	F686ZZ		13	15	3.5	5	1	1.1	0.15
F696	F696ZZ		15	17	5	5	1.2	1.2	0.2
F606	F606ZZ		17	19	6	6	1.2	1.2	0.3
F626	F626ZZ		19	22	6	6	1.5	1.5	0.3
MF117	MF117ZZ	7	11	12.2	2.5	3	0.6	0.6	0.15
MF137	MF137ZZ		13	14.2 14.6	3	4	0.6	0.8	0.2
F6B7	F687ZZ		14	16	3.5	5	1	1.1	0.15
F697	F697ZZ		17	19	5	5	1.2	1.2	0.3
F607	F607ZZ		19	22	6	6	1.5	1.5	0.3
F627	F627ZZ		22	25	7	7	1.5	1.5	0.3
MF128	MF128ZZ	8	12	13,213.6	2.5	3.5	0.6	0.8	0.15
MF148	MF148ZZ		14	15.6	3.5	4	0.8	0.8	0.2
F6B8	F688ZZ		16	18	4	5	1	1.1	0.2
F698	F698ZZ		19	22	6	6	1.5	1.5	0.3
F608	F608ZZ		22	25	7	7	1.5	1.5	0.3
F689	F689ZZ	9	17	19	4	5	1	1.1	0.2
F699	F699ZZ		20	23	6	6	1.5	1.5	0.3
F6700	F6700ZZ	10	15	16,516.5	3	4	0.8	0.8	0.3
F6800	F6800ZZ		19	21	5	5	1	1	0.3
F6900	F6900ZZ		22	25	6	6	1.5	1.5	0.3
F6701	F6701ZZ	12	18	19,519.5	4	4	0.8	0.8	0.3
F6801	F6801ZZ		21	23	5	5	0.8	1	0.3
F6901	F6901ZZ		24	26.5	g	6	1	1.5	0.3

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