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NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery thumbnail 1
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NTN GENUINE
IN STOCK
NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery
NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery - Side View
NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery - Detail
NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery - Dimension
Model
NTN-678
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

NTN NUP324EM Cylindrical Roller Bearing 120x260x55mm for Automotive Machinery

MODEL: NTN-678 100% Genuine · Traceable

Ensure uninterrupted production for your automotive machinery with the NTN NUP324EM cylindrical roller bearing, engineered to deliver exceptional radial load capacity and stability in high-torque applications. This Japan-manufactured 120x260x55mm bearing features separated inner and outer rings for easy installation and maintenance, a critical advantage for minimizing downtime during equipment servicing.Bearing steel construction with P0-P2 precision ratings ensures consistent performance under heavy loadsNon-aligning design optimized for rigid shaft applications in automotive powertrains and industrial machinery100% genuine NTN product with full traceability documentation, eliminating compliance risks in global supply chains

Key Specifications
SPEC-01
Bore (d)
120mm
OD (D)
260mm
Width (B)
55mm
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)120 mm
Outer Diameter (D)260 mm
Width (B)55 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 production for your automotive machinery with the NTN NUP324EM cylindrical roller bearing, engineered to deliver exceptional radial load capacity and stability in high-torque applications. This Japan-manufactured 120x260x55mm bearing features separated inner and outer rings for easy installation and maintenance, a critical advantage for minimizing downtime during equipment servicing.

  • Bearing steel construction with P0-P2 precision ratings ensures consistent performance under heavy loads
  • Non-aligning design optimized for rigid shaft applications in automotive powertrains and industrial machinery
  • 100% genuine NTN product with full traceability documentation, eliminating compliance risks in global supply chains

Description

Especificações do Produto

Parâmetro

Detalhes

Modelo Nº

Nome do Produto

Rolamento de rolos cilíndricos

Diâmetro do furo

15-90 mm

Dimensão Externa

35mm-180mm

Especificação

Material

Aço para Rolamentos

Estrutura

Cilíndrico

Direção da Carga

Rolamento Radial

Esférico

Rolamentos Não Alinháveis

Separado

Separado

Lubrificação

Graxa ou Óleo

Classificação de Precisão

P0 P6 P5 P4 P2

Vibração

Marca

Origem

Japão

Código HS

8482500090

NUP324EM
120*260*55mm
Z1V1 Z2V2 Z3V3
NTN

Indústrias de Aplicação

Indústria

Equipamento Típico

Automotivo

Máquinas Gerais

Manufatura Industrial

Transmission systems, gearboxes, engine components
Electric motors, pumps, compressors, conveyors
Machine tools, spindles, heavy-duty gear units

Stop Equipment Downtime with Genuine NTN NUP324EM Cylindrical Roller Bearings

OEM manufacturers across automotive and machinery sectors know the cost of bearing failure: unplanned downtime, production line halts, and quality disputes. Gray market supplies often lack traceability documents, causing customs delays and liability risks. Multi-tier distribution chains stretch delivery cycles by 30-50%, making it nearly impossible to align with tight production schedules.

Genuine NTN NUP324EM Bearings: In Stock and Traceable

As an official NTN distributor, we eliminate these pain points with direct supply chain access. The NTN NUP324EM cylindrical roller bearing—with dimensions 120x260x55mm—is designed for radial load applications in automotive machinery and industrial equipment. Our WMS实时 inventory system ensures stock availability, while ISO 9001 compliant quality checks guarantee batch consistency.

Projetado para Aplicações Industriais de Alto Desempenho

This Japan-manufactured cylindrical roller bearing excels in high-speed, heavy-load environments. Its separated structure allows easy mounting and dismounting, ideal for maintenance-intensive machinery. The non-aligning design maintains precision under radial loads, making it suitable for electric motors, gearboxes, and conveyor systems where reliability is critical.

Características Técnicas que Maximizam o Tempo de Atividade do Equipamento

The NTN NUP324EM combines key engineering features to deliver long service life. Its bearing steel construction provides superior durability, while precision ratings from P0 to P2 accommodate applications requiring tight tolerances. Vibration classes Z1V1 to Z3V3 ensure smooth operation, reducing noise and wear in high-speed scenarios. The radial design efficiently handles axial loads in one direction, complemented by grease or oil lubrication options to match operating conditions.

Por que Genuínos Rolamentos Reduzem o Custo Total de Propriedade

Counterfeit bearings may offer lower upfront prices, but they often fail prematurely—costing far more in replacement parts, labor, and production losses. Our 100% genuine NTN NUP324EM bearings come with full traceability documentation, eliminating customs clearance issues and quality disputes. With a three-level quality inspection system, we ensure each bearing meets NTN’s strict performance standards, reducing the risk of unexpected failures.

Por que fabricantes globais confiam em nosso fornecimento

With over 10 years of technical expertise and service in 50+ countries, we provide more than just products. Our dedicated account managers oversee every order from quotation to delivery, offering real-time progress updates. We support OEM customization, small-batch trials, and long-term supply agreements with reserved inventory. Our technical team provides application-specific guidance, from model selection to failure analysis, helping clients optimize bearing performance and reduce maintenance costs.

Packaging & Shipping

  • Carton pallet packaging with protective inner boxing
  • Package Size: 28.00cm * 28.00cm * 7.50cm
  • Package Gross Weight: 14.400kg
  • Logística global porta a porta via DHL, FedEx, ou frete marítimo/aéreo

    Rastreamento de remessas em tempo real e suporte à documentação de exportação

  • Flexible MOQ: 1 piece for urgent repairs, bulk pricing available

Get Your NTN NUP324EM Bearing Quote Today

Don’t let bearing procurement delays disrupt your production. Send us your model list, application parameters, and order volume—we’ll issue a formal quotation with authorization certificates within 24 hours. With WMS real-time inventory, we can arrange prompt delivery to keep your machinery running.

Perguntas Frequentes

Q: Estes são rolamentos genuínos ?

A: Yes, we are an official NTN authorized distributor. Every NTN NUP324EM bearing comes with full traceability documentation and brand authorization certificates.

P: Como posso confirmar se este rolamento se encaixa no meu equipamento?

A: Forneça o modelo do seu equipamento ou os parâmetros operacionais (carga, velocidade, temperatura), e nossa equipe técnica verificará a compatibilidade sem custos.

P: Qual é a sua política de garantia?

A: We offer NTN’s standard manufacturer warranty, covering manufacturing defects with unconditional replacement.

P: Qual é a quantidade mínima do pedido?

A: We accept orders starting from 1 piece to support emergency maintenance needs, with preferential pricing for bulk purchases.

P: Quanto tempo leva a entrega?

A: In-stock items ship within 3-7 working days via DHL, FedEx, or UPS; sea/air freight options are available for large orders.

Q: Como verifico a autenticidade do rolamento?

A: Each bearing includes NTN’s original packaging with anti-counterfeit labels. We provide full traceability documents, and you can cross-verify via 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-678?

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-67 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