Roller Bearing

High Precision NTN N2304EM Cylindrical Roller Bearing for Industrial Machinery 20x52x21mm

SKU: 11ac4a1e3788 In Stock

Ensure smooth, precise rotation in your industrial machinery with the High Precision NTN N2304EM Cylindrical Roller Bearing (20x52x21mm). Engineered to deliver reliable performance under radial loads, this bearing minimizes downtime and enhances equipment efficiency, making it ideal for machine tools, textile machinery, and other heavy-duty applications.

  • Separated design allows easy installation and maintenance, reducing assembly time and operational disruptions
  • Precision rating options from P0 to P2 and vibration grades Z1V1 to Z3V3 ensure compatibility with high-precision machinery requirements
  • Constructed with premium bearing steel for extended service life, even in demanding industrial environments
Wholesale Price (FOB)
¥1.00
MOQ: 1 Piece • Bulk discounts available on inquiry
12-Month Warranty
Free Samples
Global Shipping
Product Specifications

Technical Details & Description

Product Specifications

Parameter Details
Model NO. N2304em
Product Name Cylindrical Roller Bearing
Specification 20*52*21mm
Bore Size 15-90 mm
Outer Dimension 35mm-180mm
Material Bearing Steel
Structure Cylindrical
Load Direction Radial Bearing
Separated Separated
Spherical Non-Aligning Bearings
Lubrication Grease or Oil
Precision Rating P0 P6 P5 P4 P2
Vibration Z1V1 Z2V2 Z3V3
Trademark NTN
Origin Japan
HS Code 8482500090

Application Industries

Industry Typical Equipment
Industrial Machinery Machine Tools, Printing Presses, Reducers
Manufacturing CNC Machines, Gearboxes, Electric Motors
Automotive Transmission Systems, Engine Components
Agricultural Machinery Harvesters, Tractors, Heavy-Duty Equipment

Minimize Downtime with High Precision NTN N2304EM Cylindrical Roller Bearing

Industrial machinery operators know the frustration of unexpected downtime caused by bearing failure. A single faulty component can halt production lines, delay orders, and increase maintenance costs. Sourcing reliable bearings with consistent quality and flexible order options often feels like navigating a maze of suppliers with unclear origin claims and minimum order requirements.

Genuine NTN Bearings with Fast Delivery and Flexible Ordering

The High Precision NTN N2304EM Cylindrical Roller Bearing addresses these challenges directly. As an integrated manufacturer and exporter with over 15 years of experience, we supply authentic NTN bearings with full traceability. Our 1pc MOQ for standard items means you can order exactly what you need for emergency repairs or scheduled maintenance, without overstocking. With 3–5 days sample lead time and 5–15 days bulk delivery, we ensure you get the bearings when your production line can’t wait.

Engineered for Demanding Industrial Applications

This NTN N2304EM Cylindrical Roller Bearing excels in high-load, high-precision environments. Its separated structure allows for easy mounting and dismounting, making it ideal for machinery where maintenance accessibility is critical. With a bore size of 20mm, outer diameter of 52mm, and width of 21mm, it delivers reliable radial load performance in machine tools, printing presses, and reducers. The bearing’s design ensures stable operation even under varying speeds, making it a trusted choice for continuous production processes.

Precision and Vibration Control for Optimal Performance

The technical specifications of the NTN N2304EM directly impact your machinery’s efficiency. Available precision ratings from P0 to P4 ensure you can match the bearing to your equipment’s accuracy requirements—P4 grade for high-speed spindles or P0 for general industrial use. Vibration grades Z1V1 to Z3V3 reduce noise and energy consumption, extending both bearing life and the lifespan of connected components. Constructed from high-quality bearing steel, this cylindrical roller bearing balances durability with performance, even in heavy-duty applications.

Why Authenticity Matters for Long-Term Cost Savings

Choosing genuine NTN bearings over counterfeit alternatives eliminates hidden costs. Fake bearings often fail prematurely, leading to unplanned downtime, increased labor for repairs, and potential damage to expensive machinery. Our authentic NTN N2304EM bearings come with a 12-month global warranty, ensuring replacement or refund for manufacturing defects. By investing in genuine components, you reduce total cost of ownership through extended service life and consistent performance—critical factors in competitive industrial markets.

Our Commitment to Reliable Supply and Support

Buyers trust us for our comprehensive quality control and customer-focused services. We hold ISO9001 and ISO14001 certifications, with a dedicated QC lab ensuring every bearing meets international standards. Our R&D team provides free technical guidance, helping you select the right bearing for your specific application. With operations serving Europe, America, Southeast Asia, and the Middle East, we offer stable supply chains even during market fluctuations. Whether you need OEM customization or standard NTN bearings, our team ensures clear communication and on-time delivery.

Packaging & Shipping

  • Carton and pallet packaging for secure transport
  • 3–5 days sample lead time for urgent evaluation
  • 5–15 days bulk delivery via T/T, credit card, or Alibaba trade payment
  • Global logistics options including express, air, and sea freight
  • 1pc MOQ available for standard items, supporting emergency repairs

Get Your NTN N2304EM Bearing Today

Don’t let bearing issues slow down your production. Whether you need a single replacement or bulk order, our team is ready to assist. Send us your bearing model, application details, and quantity, and we’ll provide a competitive quote within 24 hours. With our reliable supply and technical support, you can keep your machinery running at peak performance.

Frequently Asked Questions

Q: Are these NTN N2304EM bearings genuine?

A: Yes, we supply authentic NTN bearings with full traceability. As an authorized distributor, we ensure all products come directly from NTN’s official supply chain.

Q: How do I confirm if this bearing fits my equipment?

A: Provide your equipment model or technical specifications (load, speed, operating conditions), and our technical team will verify compatibility at no cost.

Q: What is the warranty policy?

A: We offer a 12-month global warranty. Manufacturing defects are covered by free replacement or refund.

Q: What is the minimum order quantity?

A: The minimum order quantity for standard items like the NTN N2304EM is 1 piece, ideal for emergency repairs.

Q: How long does shipping take?

A: Samples ship in 3–5 days, bulk orders in 5–15 days. We offer flexible logistics via DHL, FedEx, UPS, air, or sea freight.

Q: How can I verify the bearing’s authenticity?

A: Authentic NTN bearings include original packaging with serial numbers. We provide documentation to trace each product to its manufacturing batch.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

Sample Policy

Free samples available for distributors. 3–5 days production lead time.

Bulk Delivery

5–15 days for bulk orders. T/T, L/C and Alibaba payments accepted.

Certifications

ISO 9001:2015, ISO 14001 certified. ABMA / DIN compliant.

After-Sales

12-month warranty plus dedicated technical failure analysis support.

Engineering Insights

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