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NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm thumbnail 1
NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm - Side View thumbnail 2
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NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm - Dimension thumbnail 4
NTN GENUINE
IN STOCK
NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm
NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm - Side View
NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm - Detail
NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm - Dimension
Model
8211
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

NTN Cylindrical Roller Bearings NJ2210 for Marine Gearbox – Long Life 50x90x25mm

MODEL: 8211 100% Genuine · Traceable

Ensure uninterrupted marine gearbox performance with the NTN NJ2210 cylindrical roller bearing, engineered for extended service life in harsh marine environments. This 50x90x25mm precision component delivers exceptional radial load capacity and durability, keeping your equipment running smoothly even under constant vibration and saltwater exposure.Chrome steel construction with P0-P2 precision ratings ensures consistent performance and easy replacementLow-noise operation reduces cabin vibrations while maintaining critical gear alignmentBacked by NTN's official authorized supply chain for full traceability and compliance documentation

Key Specifications
SPEC-01
Bore (d)
50mm
OD (D)
90mm
Width (B)
25mm
Dyn. Load Cr
183 kN
Stat. Load C0
220 kN
Lim. Speed
3,800 rpm
Request Quotation Now
24H
Quote Reply
5-7D
Sample Ship
100%
Genuine
SECTION 05 / FULL SPECIFICATIONS

Complete Technical Parameters

All specifications strictly follow NTN factory standards. Data verified against original NTN catalogue with full ISO 9001 compliance.

Dimensions DIM
Bore Diameter (d)50 mm
Outer Diameter (D)90 mm
Width (B)25 mm
Chamfer (rs min)2.1 mm
Net Weight1.85 kg
Performance PERF
Dynamic Load Rating (Cr)183 kN
Static Load Rating (C0r)220 kN
Limiting Speed (Grease)3,800 rpm
Limiting Speed (Oil)5,000 rpm
Fatigue Load Limit (Pu)23.6 kN
Construction CONST
Bearing TypeCylindrical Roller Bearing
Cage MaterialPressed Steel
Sealing TypeOpen / 2RS / ZZ
Internal ClearanceCN / C3 / C4
Tolerance ClassP0 / P6 / P5
Operating Conditions OP
Temperature Range-30°C ~ +120°C
LubricationGrease / Oil
Vibration ClassZ2 / Z3 / Z4
StandardJIS B 1518 / ISO 281
OriginJapan (NTN Factory)
SECTION 06 / INDUSTRY APPLICATIONS

Compatible Equipment & Industries

Validated by 2,400+ OEM customers across 50+ countries. Engineered for high-reliability operation in demanding industrial environments.

01

Steel Mills

Heavy-duty rolling mills, continuous casters, hot strip mills with shock-absorbed design.

02

Mining Equipment

Crushers, vibrating screens, conveyors operating under extreme loads and contamination.

03

Paper Machines

Drying cylinders, calenders, press rolls requiring vibration damping.

04

Conveyor Systems

Belt conveyors, idlers, drive pulleys for ports, logistics and manufacturing lines.

05

Cement & Aggregate

Vibrating equipment, crushers, kilns demanding misalignment tolerance.

06

Wind Power

Main shaft, gearbox, generator bearings for onshore and offshore turbines.

07

Petrochemical

Pumps, compressors, blowers in chemical processing and refining plants.

08

Construction Machinery

Excavators, cranes, loaders, drilling rigs working under impact loads.

09

Marine & Offshore

Propulsion shafts, deck machinery, anti-corrosion sealed for marine environment.

SECTION 07 / ENGINEERING DEEP DIVE

Why NTN Outperforms in Critical Applications

From raceway geometry to surface micro-finish, every parameter is engineered for L10 life extension and consistent batch performance.

MATERIAL

Premium Carburized Steel

High-purity SUJ2 / 100Cr6 bearing steel with vacuum degassing. Carburized case depth precisely controlled at 2.5-3.5mm with HRC 60-62 surface hardness.

  • Oxygen content ≤ 8 ppm -- minimizes inclusion-induced fatigue cracks
  • Compressive residual stress on raceway surface for crack resistance
  • 40% L10 life improvement vs. industry standard steel
SEALING

Multi-Lip NBR / FKM Seals

Choice of contact (2RS), non-contact (2Z) and metal shielded (ZZ) options. Designed for IP65 dust ingress protection and grease retention.

  • NBR rated -40°C ~ +120°C / FKM rated up to +200°C
  • Garter spring tension calibrated for low torque & long sealing life
  • Customizable food-grade FDA compliant variants available
PRECISION

P0 to P5 Tolerance Class

Precision grades from standard P0 up to P5 (ISO Class 5) for high-speed spindle applications. Inspected on Mahr / Talyrond CMM equipment.

  • Bore tolerance ±2μm (P5) / Radial runout ≤ 4μm
  • Raceway roundness controlled within 0.8μm
  • Vibration class Z2/Z3/Z4 for low-noise applications
CLEARANCE

CN / C3 / C4 Internal Clearance

Internal radial clearance optimized per application -- CN for general use, C3 for thermal expansion, C4 for high-temperature environments.

  • Optimized load distribution under interference fits
  • Thermal expansion accommodation up to ΔT 80°C
  • Custom clearance ranges available for OEM specifications
SECTION 08 / TRUST & TRACEABILITY

100% Genuine NTN.
Traceable. Warranted.

We operate as an officially authorized NTN distributor with an unbroken supply chain. Every bearing carries laser-engraved batch codes that can be verified against NTN's factory database.

Authorized Distributor

Direct sourcing from NTN factories with original brand authorization certificate.

Laser Batch Code

Every bearing engraved with traceable batch ID. Verifiable via NTN factory MES system.

Full Documentation

Mill test certificates, COO, COC, packing list -- all export documents provided.

12-Month Warranty

Standard 12-month quality warranty. Free replacement for verified manufacturing defects.

2,400+
OEM Customers
50+
Countries Served
99.97%
QC Pass Rate
10+
Years Experience
SECTION 09 / PACKAGING & SHIPPING

Export-Ready Packaging, Worldwide Door-to-Door Delivery

Real-time WMS inventory ensures rapid dispatch. Standard NTN moisture-proof packaging with anti-rust treatment for long-term storage.

NTN original packaging with moisture protection
PACKAGING

Original NTN Packaging

  • Inner: NTN-printed plastic tube + VCI anti-rust paper
  • Middle: Original NTN branded carton with batch label
  • Outer: Reinforced export carton, optional wooden pallet
  • Custom: Neutral packaging or customer branding available
Global shipping logistics hub
LOGISTICS

Global Shipping Options

EXPRESS
DHL · FedEx · UPS
3-7 days door-to-door
AIR FREIGHT
Bulk Air Cargo
5-10 days port-to-port
SEA FREIGHT
FCL · LCL
15-35 days, lowest cost
RAIL
CN-EU Express
18-22 days to Europe
EXW · FOB · CIF · DDP -- flexible Incoterms supported
SECTION 11 / FAQ

Frequently Asked
Questions

Common questions from OEM and distributor partners. Can't find an answer? Contact our engineering team directly.

Ask a custom question
Q.01 How can I verify the authenticity of NTN bearings I receive?

Every NTN bearing has laser-engraved batch codes on the inner ring. We provide the original mill test certificate and brand authorization letter with each shipment. You can verify the batch code with NTN factory directly via their official channels.

Q.02 What is the typical lead time and minimum order quantity?

In-stock items ship within 5-7 working days. MOQ starts from 1 piece for samples. Bulk orders for OEM customers benefit from priority production scheduling and consolidated shipping. Custom non-standard bearings typically take 30-45 days.

Q.03 Do you offer OEM customization (clearance, sealing, precision)?

Yes. We support custom internal clearance (CN/C3/C4/C5), sealing options (2RS/ZZ/Open), precision class (P0/P6/P5), special grease, and neutral packaging. Submit your engineering drawing and we will return a feasibility report within 72 hours.

Q.04 What documentation is provided for international shipping?

Standard export documents include: Commercial Invoice, Packing List, Bill of Lading / Air Waybill, Certificate of Origin (Form A / E / FTA), Certificate of Conformity, NTN Mill Test Certificate, and Brand Authorization Letter. Customs HS code and country-specific requirements are pre-checked.

Q.05 What is your warranty and return policy?

We offer a standard 12-month quality warranty from shipping date for verified manufacturing defects. Defective products are replaced free of charge. Failure analysis reports are provided to support root cause investigation. Wear due to misapplication or improper installation is excluded.

Q.06 Can you ship under DDP terms to my country?

Yes. We support EXW, FOB, CIF, CFR, and DDP terms. Our logistics team handles customs clearance, duties, and last-mile delivery for DDP shipments to 50+ countries. For sensitive markets, we recommend DDP to avoid customs delays.

PRODUCT DESCRIPTION

Detailed Product Information

Ensure uninterrupted marine gearbox performance with the NTN NJ2210 cylindrical roller bearing, engineered for extended service life in harsh marine environments. This 50x90x25mm precision component delivers exceptional radial load capacity and durability, keeping your equipment running smoothly even under constant vibration and saltwater exposure.

  • Chrome steel construction with P0-P2 precision ratings ensures consistent performance and easy replacement
  • Low-noise operation reduces cabin vibrations while maintaining critical gear alignment
  • Backed by NTN’s official authorized supply chain for full traceability and compliance documentation

Description

Produktspezifikationen

Parameter

Details

Modell-Nr.

Material

Wälzlagerstahl

Funktion

Service

Transportverpackung

Kartonpalette

Spezifikation

Marke

Ursprung

Japan

HS-Code

8482300000

Produktionskapazität

1000000

Packungsgröße

Paket Bruttogewicht

NJ2210
Outer Dimension Medium and Large(120-190mm)
Spherical Aligning Bearings
Load Direction Radial Bearing
Separated Unseparated
Long Life / Durable / Low Voice
Precision Rating P0 P6 P5 P4 P2
Materia Chrome Steel
OEM Service
50mm×90mm×25mm
NTN
7.00cm * 11.00cm * 4.00cm
1.000kg

Anwendungsindustrien

Industrie

Typische Ausrüstung

Marine Marine Gearbox

Stop Marine Gearbox Failures with NTN NJ2210 Cylindrical Roller Bearings

Marine gearbox operators face critical challenges with bearing reliability—premature failures from counterfeit parts cause costly downtime, while inconsistent supply chains disrupt maintenance schedules. When bearings fail at sea, the risks multiply: delayed voyages, emergency repairs, and compromised safety. These issues aren’t just about replacement costs; they threaten operational continuity for vessel owners and marine engineering firms.

Genuine NTN NJ2210 Bearings for Marine Gearbox Reliability

Our NTN NJ2210 cylindrical roller bearings address these pain points directly. As an official NTN distributor, we ensure 100% genuine products with full traceability, eliminating the risk of counterfeit components that plague gray-market channels. With a 50x90x25mm specification, these bearings are engineered for the high radial loads and continuous operation of marine gearboxes, delivering the long life critical for maritime applications. Our WMS real-time inventory system ensures stable supply, so you can align maintenance schedules without unexpected delays.

Engineered for Marine Gearbox Performance

Marine gearboxes operate in harsh conditions—constant vibration, variable loads, and exposure to moisture demand bearings that excel under stress. The NTN NJ2210 cylindrical roller bearing is designed to handle these challenges, with radial load capacity optimized for the torque demands of propulsion systems. Its chrome steel construction and precision manufacturing (available in P0-P2 ratings) ensure consistent performance even in saltwater environments, making it a reliable choice for commercial ships, offshore vessels, and fishing boats.

Technical Details That Define Marine-Grade Reliability

The NTN NJ2210’s performance stems from critical technical features. Its 50mm bore diameter and 90mm outer diameter balance compactness with load-bearing capability, fitting seamlessly into standard marine gearbox designs. The 25mm width provides stability under axial loads, while the low-voice operation reduces noise pollution—a key consideration for crew comfort. Precision ratings from P0 to P2 allow customization for applications requiring tight tolerances, ensuring minimal vibration and extended gearbox life. The long-life design, a result of NTN’s advanced material processing, directly translates to fewer replacements and lower maintenance costs over the bearing’s lifecycle.

The Hidden Costs of Non-Genuine Marine Bearings

Choosing non-genuine bearings for marine gearboxes creates hidden liabilities. Counterfeit parts often fail prematurely due to substandard materials, leading to gearbox damage, oil leaks, and even propulsion system failures. The cost of emergency repairs at sea can exceed $100,000 per incident, not counting lost revenue from delayed cargo or passenger trips. In contrast, genuine NTN NJ2210 bearings, backed by ISO 9001 quality control, reduce total cost of ownership by minimizing downtime and ensuring compliance with marine safety standards. Full traceability documentation also simplifies customs clearance for international vessel operators, avoiding costly delays at ports.

Why Marine Operators Trust Our NTN Supply

As an official NTN distributor with over 10 years of technical expertise, we deliver value beyond products. Our three-level quality inspection system ensures every bearing meets NTN’s strict standards before shipment. We serve clients in 50+ countries, including major maritime markets in Southeast Asia and Europe, with dedicated account managers overseeing orders from quote to delivery. Our global door-to-door logistics network ensures timely delivery, even to remote ports, while our technical team provides free model selection support to ensure optimal bearing performance in your specific gearbox model. For marine OEMs, we offer flexible customization to meet unique application requirements, backed by complete export documentation for regulatory compliance.

Packaging & Shipping

  • Carton pallet packaging with NTN original branding and防伪标签
  • Package size: 7.00cm * 11.00cm * 4.00cm; gross weight: 1.000kg per unit
  • Globaler Tür-zu-Tür-Logistik via DHL, FedEx, UPS, Luft- oder Seefracht

    Echtzeitverfolgung für alle Sendungen bereitgestellt

  • Flexible order quantities, including small-batch trial orders for quality verification

Secure Your Marine Gearbox Bearings Today

Don’t let bearing failures disrupt your marine operations. Send us your gearbox model, operating conditions, and required quantity for a formal quotation within 24 hours. Our inventory includes NTN NJ2210 bearings ready for immediate shipment, ensuring you can maintain schedules and avoid costly downtime. With genuine parts, technical support, and reliable delivery, we’re your trusted partner for marine bearing supply.

Häufig gestellte Fragen

F: Sind das echte Lager?

A: Yes, we are an official NTN authorized distributor. Every NJ2210 bearing comes with brand authorization and traceability certificates to verify authenticity.

Q: How do I confirm if the NJ2210 fits my marine gearbox?

A: Provide your gearbox model or technical specifications (load, speed, operating temperature), and our 10+ years technical team will verify compatibility at no cost.

F: Wie lautet die Garantiepolitik?

A: All NTN bearings are backed by the manufacturer’s warranty. We provide full support for manufacturing defect claims, with replacement or refund options as needed.

Q: Wie lautet die Mindestbestellmenge?

A: We accept orders starting from 1 unit, supporting both emergency repairs and bulk OEM requirements.

F: Wie lange dauert der Versand?

A: In-stock bearings ship within 3-7 business days via your preferred logistics (DHL/FedEx/UPS/air/sea). We provide tracking numbers for real-time updates.

F: Wie kann ich die Authentizität des Lagers überprüfen?

A: Check the NTN laser marking, packaging hologram, and traceability certificate. We also provide official authorization documents upon request for customs or quality audits.

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SECTION 12 / GET QUOTATION

Ready to Order
8211?

Submit your inquiry below. Our senior application engineers will respond within 24 hours with a formal quotation, brand authorization, and traceability certificate.

  • Formal quotation in 24h
  • Sample within 5-7 days
  • 100% genuine guarantee
  • Worldwide DDP shipping
FORM · INQUIRY-8211 SECURE SSL

By submitting, you agree to NTN OEM processing your contact details for quotation purposes only. We never share information with third parties.

NTN AUTHORIZED DISTRIBUTOR / OEM · Wholesale · Global Logistics
ISO 9001:2015 · JIS B 1518