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<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Side View thumbnail 2
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Detail thumbnail 3
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Dimension thumbnail 4
NTN GENUINE
IN STOCK
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Side View
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Detail
<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas - Dimension
Model
30305
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

<p> 30305 30306 30307 Rolamentos de Rolos Cônicos com Serviço OEM para Aplicações em Máquinas

MODEL: 30305 100% Genuine · Traceable

Ensure seamless machinery performance with authentic NTN 30305, 30306, 30307 tapered roller bearings—Japan origin, ISO 9001 certified, and backed by 10+ years of technical expertise. As an official NTN distributor, we eliminate supply chain delays and counterfeit risks, delivering 100% traceable OEM solutions that keep your production lines running without costly interruptions.Precision-engineered with P0-P2 ratings and Z1V1-Z3V3 vibration control for heavy-duty machinery applicationsFlexible lubrication options (grease/oil) and custom OEM packaging to match your specific operational needsDedicated account managers provide full-cycle support, from model selection to door-to-door logistics across 50+ countries

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

Ensure seamless machinery performance with authentic NTN 30305, 30306, 30307 tapered roller bearings—Japan origin, ISO 9001 certified, and backed by 10+ years of technical expertise. As an official NTN distributor, we eliminate supply chain delays and counterfeit risks, delivering 100% traceable OEM solutions that keep your production lines running without costly interruptions.

  • Precision-engineered with P0-P2 ratings and Z1V1-Z3V3 vibration control for heavy-duty machinery applications
  • Flexible lubrication options (grease/oil) and custom OEM packaging to match your specific operational needs
  • Dedicated account managers provide full-cycle support, from model selection to door-to-door logistics across 50+ countries

Description

Especificações do Produto

Parâmetro

Detalhes

Modelo Nº

30305

Lubrificação

Graxa ou Óleo

Classificação de Precisão

P0 P6 P5 P4 P2

Vibração

Serviço

OEM ODM

Embalagem de Transporte

Palete de Caixas

Especificação

25*62*17 mm

Marca

Origem

Japão

Código HS

8482200000

Z1V1 Z2V2 Z3V3
NTN

Indústrias de Aplicação

Indústria

Equipamento Típico

Máquinas Gerais

Transmissões, Caixas de Engrenagens, Bombas, Compressores

Automotivo

Sistemas de Diferencial, Eixos de Tração, Componentes de Direção

Manufatura Industrial

Sistemas de Transporte, Máquinas-Ferramentas, Equipamentos de Manuseio de Materiais

Transporte Ferroviário

Bogies de Trem, Conjuntos de Eixos, Acionamentos por Engrenagens

Pare os Atrasos na Produção com Rolamentos Cônicos de Rolos Genuínos

Os fabricantes OEM conhecem a frustração: rolamentos falsificados falham prematuramente, causando paradas não planejadas e interrupções nas linhas de produção. Canais de distribuição com múltiplas camadas alongam os prazos de entrega em 30-50%, impossibilitando o alinhamento com cronogramas de produção apertados. Quando o suporte técnico está ausente, a seleção do modelo de rolamento errado leva a custos de manutenção aumentados e à redução da vida útil do equipamento.

Rolamentos Genuínos 30305, 30306, 30307 com Fornecimento Confiável

Como distribuidor oficial da , fornecemos rolamentos cônicos

100% genuínos, incluindo os modelos 30305, 30306 e 30307, com rastreabilidade completa do produto. Nosso sistema de inventário em tempo real WMS garante fornecimento estável a granel, enquanto nosso sistema de inspeção de qualidade de três níveis, em conformidade com a ISO 9001, assegura desempenho consistente. Seja para fusos de motor, caixas de engrenagens ou sistemas transportadores, esses rolamentos oferecem a confiabilidade que suas máquinas exigem.

Projetado para aplicações em maquinário pesado

Os rolamentos cônicos se destacam em aplicações com cargas radiais e axiais combinadas, comuns em máquinas industriais. O modelo 30305, com diâmetro do furo de 25mm e diâmetro externo de 62mm, é especificamente projetado para lidar com ambientes de alto torque. Quando operando sob cargas pesadas e velocidades moderadas, a seleção adequada do rolamento impacta diretamente a eficiência do equipamento e os intervalos de manutenção.

Características Técnicas Que Garantem Desempenho

As opções de classificação de precisão (P0 a P2) permitem combinar a exatidão do rolamento com os requisitos da aplicação – os graus P5 e P4 são adequados para máquinas de alta velocidade onde a vibração mínima é crítica. As classes de vibração a

oferecem flexibilidade, sendo que
    fornece os níveis mais baixos de vibração para equipamentos sensíveis a ruído. A largura de 17mm do rolamento 30305 equilibra a capacidade de carga e as restrições de espaço, enquanto a compatibilidade com lubrificação a graxa e a óleo torna-o adaptável a várias condições operacionais.

    Por que Autênticos Rolamentos Reduzem o Custo Total

    Counterfeit tapered roller bearings may offer lower upfront prices, but they typically fail within 30-50% of the expected service life. This leads to repeated replacement costs, unplanned downtime, and potential damage to adjacent components. Genuine NTN bearings, backed by NTN’s engineering expertise, provide predictable performance and longer service intervals, ultimately reducing your total cost of ownership. Our complete export documentation ensures customs clearance without delays, avoiding costly production interruptions.

    Nosso Compromisso com o Sucesso da Sua Produção

    Com mais de 10 anos de expertise técnica, atendemos clientes em mais de 50 países, incluindo fabricantes automotivos e de maquinário. Nossa cadeia de suprimentos autorizada garante a autenticidade dos produtos, com cada rolamento rastreável até sua origem. Oferecemos personalização OEM flexível para atender às necessidades específicas de aplicação, apoiados por um gerente de conta dedicado que acompanha seu pedido desde o armazenamento até a entrega. Nossa logística global porta a porta garante que seus rolamentos cheguem quando e onde você precisar.

    Packaging & Shipping

      Embalagem original com opções de caixa de papelão e palete para transporte seguro

      Dimensões da embalagem: 8,20cm * 8,20cm * 3,70cm por unidade

      Peso bruto por pacote: 0.264kg

      Entrega global via DHL, FedEx, UPS, frete aéreo ou marítimo

      Rastreamento de logística em tempo real fornecido para todas as remessas

      Quantidades de pedido flexíveis, de pequenos lotes a fornecimento em massa

    Obtenha seus Rolamentos Enviados Rapidamente

    Don’t let bearing issues slow down your production. Send us your model list, application parameters, and order volume today. We’ll provide a formal quotation with brand authorization within 24 hours, including sample testing options for quality verification. With our dedicated inventory reservation, you can secure the bearings you need when you need them.

    Perguntas Frequentes

    Q: Estes são rolamentos genuínos ?

    R: Sim, somos um distribuidor autorizado oficial da . Todos os produtos vêm com documentação completa de rastreabilidade e certificados de autorização da marca.

    Q: Como posso confirmar o modelo de rolamento correto para o meu equipamento?

    A: Nossa equipe técnica pode ajudar na seleção do modelo com base nas especificações do seu equipamento, requisitos de carga e condições operacionais.

    P: Qual é a sua política de garantia?

    A: We adhere to NTN’s original warranty standards, with unconditional replacement for manufacturing defects.

    P: Qual é a quantidade mínima do pedido?

    A: Aceitamos pedidos a partir de 1 unidade, atendendo tanto às necessidades de manutenção emergencial quanto de produção em larga escala.

    P: Quanto tempo leva a entrega?

    A: Itens em estoque geralmente são enviados dentro de 3 a 7 dias úteis, com os prazos de entrega variando de acordo com o destino e o método logístico escolhido.

    P: Como posso verificar a autenticidade dos rolamentos?

    A: Each bearing includes NTN’s original packaging with security features. We also provide complete traceability documents for verification.

    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
30305?

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-30305 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