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<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles - Detail thumbnail 3
<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles - Dimension thumbnail 4
NTN GENUINE
IN STOCK
<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles
<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles - Side View
<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles - Detail
<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles - Dimension
Model
NTN-702
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

<strong> Roulements à rouleaux cylindriques <p> Haute précision pour machines automobiles

MODEL: NTN-702 100% Genuine · Traceable

Ensure seamless automotive machinery performance with the NTN NU338EM bearing, a high-precision cylindrical roller solution engineered to deliver reliable radial load handling in critical industrial applications. Its separated inner/outer ring design allows for easy installation and maintenance, reducing downtime during machinery overhauls.Precision ratings from P0 to P2 ensure consistent operation under high-speed conditions, minimizing vibration and extending equipment lifespanConstructed with premium bearing steel and compatible with both grease and oil lubrication, adapting to diverse working environments380mm outer diameter and 75mm width provide robust support for heavy-duty automotive transmission systems

Key Specifications
SPEC-01
Bore (d)
75mm
OD (D)
130mm
Width (B)
31mm
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)75 mm
Outer Diameter (D)130 mm
Width (B)31 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 seamless automotive machinery performance with the NTN NU338EM bearing, a high-precision cylindrical roller solution engineered to deliver reliable radial load handling in critical industrial applications. Its separated inner/outer ring design allows for easy installation and maintenance, reducing downtime during machinery overhauls.

  • Precision ratings from P0 to P2 ensure consistent operation under high-speed conditions, minimizing vibration and extending equipment lifespan
  • Constructed with premium bearing steel and compatible with both grease and oil lubrication, adapting to diverse working environments
  • 380mm outer diameter and 75mm width provide robust support for heavy-duty automotive transmission systems

Description

Spécifications du produit

Paramètre

Détails

Modèle n°

Dimension extérieure

35mm-180mm

Matériau

Acier pour roulements

Sphérique

Roulements non-alignants

Direction de charge

Roulement radial

Séparé

Séparé

Diamètre d'alésage

15-90 mm

Structure

Cylindrique

Lubrification

Graisse ou Huile

Évaluation de précision

P0 P6 P5 P4 P2

Vibration

Service

OEM ODM

Emballage de transport

Palette en carton

Spécification

180*380*75mm

Code SH

8482500090

NU338EM
Z1V1 Z2V2 Z3V3

Industries d'application

Industrie

Équipement typique

Automobile

Systèmes de transmission, composants moteur, ensembles d'essieux

Machines générales

Moteurs électriques, boîtes de vitesses, pompes, compresseurs

Transport Ferroviaire

Moteurs de traction de train, systèmes de bogie

Éliminez les risques de temps d'arrêt avec les roulements à rouleaux cylindriques authentiques

Les fabricants OEM des secteurs de l'automobile et de la machinerie sont fréquemment confrontés à des arrêts de production en raison de roulements contrefaits qui tombent en panne prématurément ou de livraisons irrégulières de la part de distributeurs multi-niveaux. Lorsqu'un roulement critique tel que le

tombe en panne, il endommage non seulement l'équipement mais perturbe également les plannings de production, entraînant des pertes financières importantes.

: Performance de haute précision en laquelle vous pouvez avoir confiance

En tant que distributeur officiel de

, nous garantissons que chaque roulement à rouleaux cylindriques
    répond aux normes OEM strictes. Grâce à notre système d'inventaire en temps réel WMS, ce roulement de haute précision est prêt pour une expédition immédiate, éliminant les délais de 30–50% courants dans les canaux de distribution traditionnels. Sa conception séparée et sa capacité de charge radiale le rendent idéal pour les boîtes de vitesses automobiles et les applications de moteurs où la fiabilité est non négociable.

    Conçu pour les environnements exigeants de machinerie automobile

    Le

  • prospère dans les environnements de machinerie automobile à charge élevée et à grande vitesse. En tant que roulement à rouleaux cylindriques non alignable, il offre des performances stables sous charges radiales, ce qui le rend adapté à un fonctionnement continu dans les systèmes de transmission et les broches de moteur électrique. Sa fabrication de précision garantit des vibrations minimales (indices

    à
      ) et un fonctionnement constant même sous des températures variables.

      Caractéristiques techniques clés garantissant la fiabilité

      The NTN NU338EM’s performance is defined by critical technical specifications. Its precision ratings (P0 to P2) allow for tight tolerance applications, ensuring minimal runout in high-speed machinery. The separated inner and outer rings facilitate easy installation and maintenance, reducing downtime during replacements. Available with grease or oil lubrication, it adapts to diverse operating conditions, while bearing steel construction provides durability for extended service life.

      Pourquoi authentiques roulements réduisent le coût total de possession

      Choosing genuine NTN NU338EM bearings over gray-market alternatives reduces long-term costs significantly. Counterfeit bearings often lack proper material quality and precision, leading to early failures that cause secondary equipment damage and unplanned downtime. Our ISO 9001 compliant three-level quality inspection ensures each bearing meets NTN’s strict standards, backed by full product traceability to prevent customs clearance issues and quality disputes.

      Notre engagement pour la réussite de votre production

      Avec plus de 10 ans d'expertise technique et de service dans plus de 50 pays, nous soutenons chaque roulement

      . Notre chaîne d'approvisionnement officielle autorisée garantit des produits 100 % authentiques avec une documentation complète. Un gestionnaire de compte dédié supervise votre commande, de la réservation des stocks à la logistique mondiale porte-à-porte, tandis que notre équipe technique fournit des conseils d'application pour assurer des performances optimales du roulement.

      Packaging & Shipping

        Emballage sécurisé en carton et sur palette pour éviter les dommages pendant le transport

        Livraison sous 3–7 jours ouvrables pour les articles en stock

        Options logistiques flexibles incluant DHL, FedEx, UPS, fret aérien et maritime

        Suivi en temps réel fourni pour toutes les expéditions

        Quantité minimale de commande de 1 pièce, prenant en charge à la fois les réparations d'urgence et les commandes en gros

      Obtenez votre

      roulement expédié aujourd'hui

      Don’t let bearing issues disrupt your production schedule. Send us your NTN NU338EM order details, including quantity and application requirements, and we’ll provide a formal quotation within 24 hours. With our stock availability and global shipping capabilities, you can minimize downtime and keep your machinery running efficiently.

      Questions fréquemment posées

      Q: Ces roulements sont-ils d'origine?

      A: Oui, nous sommes un distributeur agréé officiel

      . Chaque roulement
        est accompagné d'une documentation complète de traçabilité et de certificats d'autorisation de marque.

      Q : Comment puis-je confirmer si le convient à mon équipement ?

      A: Fournissez votre modèle d'équipement ou vos paramètres de fonctionnement (charge, vitesse, température), et notre équipe technique vérifiera la compatibilité sans frais.

      Q : Quelle est votre politique de garantie ?

      A: All NTN bearings are covered by the manufacturer’s warranty. We offer unconditional replacement for any manufacturing defects.

      Q : Quelle est la quantité minimale de commande ?

      A : Nous acceptons les commandes pour 1 pièce, répondant à la fois aux besoins de maintenance d'urgence et de production OEM à grande échelle.

      Q: À quelle vitesse pouvez-vous expédier le roulement ?

      R : Les articles en stock sont expédiés sous 3 à 7 jours ouvrés via le mode logistique de votre choix (DHL, FedEx, UPS, fret aérien ou maritime).

      Comment puis-je vérifier l'authenticité du roulement ?

      A: Each bearing includes NTN’s original packaging with防伪标签 and laser marking. We also provide full traceability documents for verification through NTN’s official channels.

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

SECTION 12 / GET QUOTATION

Ready to Order
NTN-702?

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-NTN-70 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