Na Rna Natr Series Needle Roller Bearing

• Customization: Available
• Cage: Without Cage
• Rows Number: Multiple
• Model NO.: NA4822
• Load Direction: Radial Bearing
• Style: Without Outer Ring
• Material: Bearing Steel
• Type: Closed
• Series: Na Rna Natr
• Load Capacity: Handles High Radial Loads and Dynamic Conditions
• Sealing: Available with Sealed Designs for Contaminant
• Transport Package: Sealed in Plastic Bags, Packed in Foam-Lined Boxes
• Specification: Gcr15
• Trademark: LOWIFAR
• Origin: China
• HS Code: 848210
• Production Capacity: 50000PCS/Year

Product Description

Key Features of NKI Series Needle Roller Bearing

(Custom configurations available upon request.)

The NA, RNA, and NATR Series Needle Roller Bearings are engineered for high performance in demanding applications requiring compact size and high load-carrying capacity. The NA and RNA series are standard needle roller bearings with or without an inner ring, while the NATR series includes track roller bearings designed for applications requiring guided motion and high radial loads. These bearings are built for precision, durability, and versatility across industrial, automotive, and machinery sectors.

 
 
Features:
Needle Roller Design: Provides high load capacity with minimal space requirements, ensuring efficient operation.
Inner Ring Options:NA Series: Includes an inner ring for use with shafts without raceways.
RNA Series: Inner ring omitted for use with hardened and ground shafts.
Track Roller Design (NATR Series): Features a thick-walled outer ring to handle high radial loads and guided motion applications.
Durable Construction: Made from premium-grade materials resistant to wear, impact, and corrosion.
Precision Engineering: Ensures smooth, quiet operation with low friction and minimal heat generation.
Sealed Options: Available with seals for enhanced protection against contaminants, extending service life.
Versatility: Wide range of sizes and configurations to suit diverse applications.
 
 
Applications:
Automotive: Used in transmissions, engines, and gearboxes for efficient power transmission and high load handling.
Industrial Equipment: Ideal for conveyors, material handling systems, and heavy machinery.
Agricultural Machinery: Found in tractors, harvesters, and other farming equipment for reliable performance.
Construction Equipment: Perfect for cranes, excavators, and other machines requiring durable bearings.
Guided Motion Systems (NATR Series): Track rollers are suitable for linear guidance and cam mechanisms.

Bearing Model	Dimensions(mm)			Basic Load Rating(KN)		Limiting Speed(rpm)	Weight(Kg)
	d	F	D	Dyn.C	Stat.Co	Oil
NA4822	110	120	140	74.8	168	2640	1.110
NA4824	120	130	150	79.6	186.4	2480	1.170
NA4826	130	145	170	94.4	244	2240	1.820
NA4828	140	155	175	96.8	252	2080	1.600
NA4830	150	165	190	121.6	312	1920	2.720
NA4832	160	175	200	128	340	1840	2.900
NA4834	170	185	215	148	396	1760	3.990
NA4836	180	195	225	156	432	1680	4.190
NA4838	190	210	240	181.6	544	1520	5.620
NA4840	200	220	250	184.8	564	1440	5.840
NA4844	220	240	270	193.6	616	1360	6.370
NA4848	240	265	300	288	864	1200	10.000
NA4852	260	285	320	300	928	1120	10.800
NA4856	280	305	350	364	1040	1040	15.500
NA4860	300	330	380	500	1416	960	22.000
NA4864	320	350	400	512	1480	880	23.200
NA4868	340	370	420	524	1552	880	24.100
NA4872	360	390	440	532	1616	800	25.700

NA4876	380	415	480	800	2272	760	44.500
NA495	5	7	13	2.24	2.02	27200	0.007
NA496	6	8	15	3.14	2.62	25600	0.009
NA497	7	9	17	3.44	2.77	24000	0.011
NA498	8	10	19	4.71	3.82	22400	0.015
NA499	9	12	20	5.02	4.79	20800	0.017
NA4900	10	14	22	6.88	7.36	19200	0.024
NA4901	12	16	24	7.64	8.72	18400	0.265
NA4902	15	20	28	8.24	10.24	16000	0.036
NA4903	17	22	30	8.96	11.68	14400	0.037
NA4904	20	25	37	17.04	20.4	12800	0.074
NA49/22	22	28	39	18.56	23.44	11200	0.080
NA4905	25	30	42	19.2	25.2	10400	0.088
NA49/28	28	32	45	19.84	26.8	10400	0.098
NA4906	30	35	47	20.4	28.4	8800	0.101
NA49/32	32	40	52	25.2	38	8000	0.157
NA4907	35	42	55	25.6	40	7600	0.171
NA4908	40	48	62	34.8	53.2	6800	0.232
NA4909	45	52	68	36.8	58.4	6000	0.232
NA4910	50	58	72	38.4	64	5600	0.276

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