Nk Series Needle Roller Bearings for Automotive & Electric Motors Salt Bath Quenched

• Customization: Available
• Cage: Without Cage
• Rows Number: Multiple
• Model NO.: NK5/10
• Load Direction: Radial Bearing
• Style: Without Outer Ring
• Material: Bearing Steel
• Type: Closed
• Load Capacity: Handles High Radial Loads and Dynamic Conditions
• Bearing Type: Needle Roller Bearing
• Structure: V-Groove Outer Ring with Needle Rollers
• Hardness: HRC 60–64
• Precision Grade: P0 / P6 (Customizable)
• Lubrication: Grease-Filled (Customizable)
• Applications: Linear Motion Guides, V-Rail Systems, Precision Au
• 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 NK Series Needle Roller Bearings

(Custom configurations available upon request.)

Compact with High Load Capacity
NK series bearings use needle rollers without an inner ring, optimizing the bearing's outer diameter while maintaining exceptionally high radial load capacity, ideal for compact systems.
Salt Bath Quenching for Enhanced Hardness
Components undergo salt bath heat treatment, ensuring uniform surface hardness, improved wear resistance, and longer service life, even in demanding environments.
Precision Ground for High-Speed Performance
Manufactured with tight tolerances and precise roller guidance, NK bearings ensure low vibration, smooth rotation, and excellent dimensional stability.
High-End Material Selection
Constructed from high-carbon chromium bearing steel (GCr15) or custom stainless options, suitable for high-temperature and corrosive environments such as aerospace or automotive under-hood applications.
Available as Combined Bearings
Optional integration with thrust bearings or inner rings to form composite axial-radial bearing units, simplifying assembly in complex mechanical 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

Bearing Designation	Mass ≈g	Dimensions(mm)Basicloadratings
		Fw	D	C	r min.	dyn. Cr N		stat.
								Cc N
NK5/10-TV	3.1	5	10	10	0.15	2650		1920
NK5/12-TV	3.7	5	10	12	0.15	3400		2650
NK6/10-TV	4.7	6	12	10	0.15	2950		2280
NK6/12-TV	5.7	6	12	12	0.15	3800		3150
NK7/10-TV	6.9	7	14	10	0.3	3250		2650
NK7-/12TV	8.2	7	14	12	0.3	4150		3600
NK8/12-TV	8.7	8	15	12	0.3	4450		4100
NK8/16-TV	12	8	15	16	0.3	5800		5800
NK9/12-TV	10.3	9	16	12	0.3	5100		5000
NK9/16-TV	12.8	9	16	16	0.3	6600		7100
NK10/12-TV	10.1	10	17	12	0.3	5300		5500
NK10/16-TV	13.3	10	17	16	0.3	7000		7800
NK12/12	12.1	12	19	12	0.3	7200		7100
NK12/16	15.9	12	19	16	0.3	10100		11000
NK14/16	20.7	14	22	16	0.3	11400		11500
NK14/20	25.5	14	22	20	0.3	14500		15600
RNA4900	16.5	14	22	13	0.3	9600		9200
NK15/16	21.8	15	23	16	0.3	12100		12700
NK15/20	26.6	15	23	20	0.3	15400		17200
NK16/16	22.4	16	24	16	0.3	12800		13900
NK16/20	28.4	16	24	20	0.3	16300		18800
RNA4901	17.4	16	24	13	0.3	10600		10900
RNA6901	31	16	24	22	0.3	18100		21600
NK17/16	23.7	17	25	16	0.3	13500		15000
NK17/20	29.8	17	25	20	0.3	17100		20400
NK18/16	24.9	18	26	16	0.3	14100		16200
NK18/20	31.4	18	26	20	0.3	17900		22000
NK19/16	26.1	19	27	16	0.3	14700		17400
NK19/20	32.2	19	27	20	0.3	18700		13600

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