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NTN GENUINE
IN STOCK
<p> Roulements à rouleaux coniques 30234 30336 pour machines automobiles haute vitesse
<p> Roulements à rouleaux coniques 30234 30336 pour machines automobiles haute vitesse - Side View
<p> Roulements à rouleaux coniques 30234 30336 pour machines automobiles haute vitesse - Detail
<p> Roulements à rouleaux coniques 30234 30336 pour machines automobiles haute vitesse - Dimension
Model
30234
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

<p> Roulements à rouleaux coniques 30234 30336 pour machines automobiles haute vitesse

MODEL: 30234 100% Genuine · Traceable

Boost your automotive machinery's performance with NTN Tapered Roller Bearings designed for high-speed applications. These precision-engineered 30234 and 30336 models deliver long life, low noise, and reliable operation—critical for keeping production lines running smoothly without unexpected downtime.Japanese-manufactured with P0-P2 precision ratings and Z1V1-Z3V3 vibration control, ensuring consistent batch quality for OEM assembly170×310×57mm specification (30234) optimized for heavy-load automotive transmissions and machinery gearboxesBacked by Dunyu Bearings' ISO 9001 quality system and full traceability documentation, streamlining global logistics and compliance

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 TypeTapered 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

Boost your automotive machinery’s performance with NTN Tapered Roller Bearings designed for high-speed applications. These precision-engineered 30234 and 30336 models deliver long life, low noise, and reliable operation—critical for keeping production lines running smoothly without unexpected downtime.

  • Japanese-manufactured with P0-P2 precision ratings and Z1V1-Z3V3 vibration control, ensuring consistent batch quality for OEM assembly
  • 170×310×57mm specification (30234) optimized for heavy-load automotive transmissions and machinery gearboxes
  • Backed by Dunyu Bearings’ ISO 9001 quality system and full traceability documentation, streamlining global logistics and compliance

Description

Spécifications du produit

Paramètre

Détails

Modèle n°

30234

Évaluation de précision

P0, P6, P5, P4, P2

Vibration

,

,

Caractéristique

Longue durée de vie, haute vitesse, faible bruit

Spécification

170*310*57 mm

Marque de commerce

Origine

Japon

Code SH

8482200000

NTN

Industries d'application

Industrie

Équipement typique

Automobile

Transmissions, Différentiels, Systèmes d'essieux

Machines générales

Boîtes de vitesses, Pompes, Compresseurs, Convoyeurs

Arrêtez les retards de production avec les véritables roulements à rouleaux coniques 30234

Pour les fabricants automobiles et de machines, rien n'arrête la production plus rapidement qu'une panne de roulement. Les fournisseurs du marché gris livrent souvent des roulements à rouleaux coniques contrefaits qui manquent d'un traitement thermique approprié, entraînant une usure prématurée et des temps d'arrêt imprévus. Les canaux de distribution multi-niveaux aggravent le problème, allongeant les délais de livraison de 30 à 50 % et rendant presque impossible l'alignement sur des calendriers de production serrés.

30234 Roulements à rouleaux coniques: En stock et traçable

En tant que distributeur officiel , nous éliminons ces points douloureux grâce à un accès direct aux roulements à rouleaux coniques

authentiques. Notre système WMS en temps réel garantit que le modèle 30234 – avec ses dimensions 170x310x57 mm – est disponible pour une expédition immédiate. Chaque unité est accompagnée d'une documentation de traçabilité complète, du lot de fabrication à la livraison, garantissant la conformité aux normes de qualité des équipementiers automobiles et simplifiant le dédouanement pour les expéditions internationales.

Conçu pour les applications automobiles et mécaniques à grande vitesse

Le roulement à rouleaux coniques 30234 excelle dans les environnements rotatifs à haute vitesse, ce qui le rend idéal pour les transmissions automobiles et les boîtes de vitesses de machines lourdes. Sa conception de précision gère efficacement les charges radiales et axiales, tandis que sa construction à faible bruit minimise les vibrations opérationnelles. Que votre équipement fonctionne dans des lignes de production continues ou dans des conditions de charge variables, ce roulement offre des performances constantes dans des circonstances exigeantes.

Excellence technique qui stimule la fiabilité

Three critical specifications define the 30234’s performance capabilities. Its precision ratings (from P0 to P2) ensure tight dimensional tolerance, reducing runout in high-precision applications like automotive powertrains. Vibration classes Z1V1 to Z3V3 allow customization based on noise sensitivity—critical for passenger vehicle transmissions. The bearing’s 57 mm width provides optimal load distribution, extending service life in heavy machinery applications where durability directly impacts maintenance costs.

Pourquoi les roulements authentiques réduisent les coûts totaux

Choosing genuine NTN Tapered Roller Bearings over counterfeit alternatives eliminates hidden expenses. Counterfeit bearings often fail within 30-50% of the expected service life, leading to emergency repairs, production downtime, and potential damage to adjacent components. Our ISO 9001 compliant three-level inspection system ensures every 30234 bearing meets NTN’s strict quality standards, delivering predictable performance that reduces long-term operational costs.

Votre partenaire de confiance pour la fourniture de roulements OEM

Avec plus de 10 ans d'expertise technique et de service dans plus de 50 pays, nous garantissons chaque roulement que nous fournissons. Notre chaîne d'approvisionnement agréée assure des produits 100 % authentiques, tandis que notre équipe technique dédiée propose des conseils spécifiques à l'application — de la sélection du modèle aux meilleures pratiques d'installation. Nous soutenons une personnalisation OEM flexible et offrons une réservation de stock dédiée pour les partenariats de production à long terme, garantissant un approvisionnement stable même en période de forte demande.

Packaging & Shipping

  • Carton and pallet packaging with NTN’s original branding and anti-counterfeit labels
  • Dimensions du colis : 33,00 cm * 33,00 cm * 7,20 cm (poids brut : 16,700 kg)

    Logistique porte-à-porte mondiale par DHL, FedEx, UPS, fret aérien ou maritime

    Suivi des expéditions en temps réel et support de documentation d'exportation

    Quantités de commande flexibles, y compris les essais en petits lots et les séries de production en vrac

Obtenez vos 30234 roulements expédiés aujourd'hui

Don’t let bearing issues disrupt your production schedule. Send us your order details—including quantity and application requirements—and we’ll issue a formal quotation with traceability certificates within 24 hours. Our rich stock ensures prompt delivery, helping you minimize downtime and maintain manufacturing continuity.

Questions fréquemment posées

Q: Ces roulements sont-ils d'origine?

A: Oui, nous sommes un distributeur officiel . Chaque roulement est livré avec une documentation de traçabilité complète et des certificats d'autorisation de marque.

Q: Comment puis-je confirmer que le 30234 est adapté 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 provide full support for claims related to manufacturing defects.

Q : Quelle est la quantité minimale de commande ?

A: Nous acceptons les commandes à partir de 1 unité, prenant en charge à la fois les réparations d'urgence et les besoins de production à grande échelle.

    Q: À quelle vitesse pouvez-vous expédier ?
  • A: In-stock items are dispatched within 3-7 business days. Custom orders follow NTN’s standard production lead times.

Q: Comment vérifier l'authenticité des roulements?

A: Check for NTN’s holographic labels, laser-etched part numbers, and scan the QR code for batch verification. We provide full traceability reports upon request.

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
30234?

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-30234 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