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Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas - Detail thumbnail 3
Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas - Dimension thumbnail 4
NTN GENUINE
IN STOCK
Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas
Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas - Side View
Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas - Detail
Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas - Dimension
Model
6311
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

Rolamento de esferas de sulco profundo 6311 25x52x15mm ZZ 2RS Qualidade OEM para aplicações em motocicletas

MODEL: 6311 100% Genuine · Traceable

Ensure smooth motorcycle performance with our Deep Groove Ball Bearing 6311, engineered to deliver reliable power transmission and reduced maintenance downtime. This 25x52x15mm precision bearing features dual sealing options (ZZ/2RS) to protect against dust and moisture, critical for withstanding the rigors of motorcycle applications.Single-row radial design optimized for high-speed rotation, minimizing friction and extending component lifeISO 9001-certified quality with full traceability documentation, ensuring compliance and peace of mind in global supply chainsGrease-lubricated for immediate installation, supported by our 10+ years technical team for customized application guidance

Key Specifications
SPEC-01
Bore (d)
25mm
OD (D)
52mm
Width (B)
15mm
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)25 mm
Outer Diameter (D)52 mm
Width (B)15 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 TypeDeep Groove Ball 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 smooth motorcycle performance with our Deep Groove Ball Bearing 6311, engineered to deliver reliable power transmission and reduced maintenance downtime. This 25x52x15mm precision bearing features dual sealing options (ZZ/2RS) to protect against dust and moisture, critical for withstanding the rigors of motorcycle applications.

  • Single-row radial design optimized for high-speed rotation, minimizing friction and extending component life
  • ISO 9001-certified quality with full traceability documentation, ensuring compliance and peace of mind in global supply chains
  • Grease-lubricated for immediate installation, supported by our 10+ years technical team for customized application guidance

Description

Especificações do Produto

Parâmetro

Detalhes

Modelo Nº

6311

Separado

Não separado

Número de Linhas

Único

Direção da Carga

Rolamento Radial

Material

Aço para Rolamentos

Nome do Produto

Rolamento de Esferas de Sulco Profundo

Tipo de Vedações

ZZ 2RS Open

Lubrificação

Graxa ou Óleo

Classificação de Precisão

P0 P6 P5 P4

Vibração

Serviço

OEM ODM

Embalagem de Transporte

Palete de Caixas

Especificação

25×52×15 mm

Código HS

8482102000

Z1V1 Z2V2 Z3V3

Indústrias de Aplicação

Indústria

Equipamento Típico

Motores de motocicleta, sistemas de transmissão, cubos de roda

Máquinas Gerais

Motores elétricos, bombas, redutores, transportadores

Automotive & Motorcycles

Pare o Tempo de Inatividade da Motocicleta com Rolamentos de Esferas de Sulco Profundo 6311 Confiáveis

Fabricantes de motocicletas e serviços de manutenção frequentemente enfrentam paradas inesperadas devido a falhas nos rolamentos. Rolamentos falsificados com vedação inadequada ou defeitos de material podem causar vazamento de óleo, superaquecimento e desgaste prematuro—custando horas de reparo e perda de produtividade. A aquisição de canais não confiáveis também significa prazos de entrega inconsistentes, dificultando o alinhamento com os cronogramas de produção.

Rolamento de esferas de ranhura profunda genuíno 6311 para desempenho estável da motocicleta

Nosso Rolamento de Esferas de Sulco Profundo 6311, projetado especificamente para aplicações em motocicletas, enfrenta esses desafios de frente. Com dimensões precisas de 25x52x15mm e opções de vedação ZZ (metálica) e 2RS (borracha), este rolamento garante proteção eficaz contra poeira e umidade em condições severas de pilotagem. Como distribuidor oficial com certificação de qualidade ISO 9001, garantimos fornecimento rastreável e com lote estável diretamente de canais autorizados, eliminando os riscos de produtos falsificados.

Desempenho Ótimo em Condições de Operação de Motocicleta

Este Rolamento 6311 se destaca em ambientes de alta velocidade com carga radial típicos de motores de motocicletas e transmissões. Seu design de fileira única e construção em aço para rolamentos oferecem desempenho consistente sob variações de temperatura e níveis de vibração (graus a

), garantindo transmissão de potência suave e vida útil prolongada. Seja para motos de rua, motocicletas off-road ou scooters comerciais, o Rolamento de Ranhura Profunda 25x52x15mm proporciona a confiabilidade necessária para operação contínua.

Características Técnicas que Importam para Rolamentos de Motocicleta

The precision rating options (P0 to P4) allow customization based on application requirements—P5/P4 grades for high-precision engines reduce noise and vibration, while P0/P6 suits standard transmission systems. The choice between ZZ and 2RS seals balances maintenance needs: ZZ seals offer superior heat resistance for high-temperature engine compartments, while 2RS seals provide enhanced protection against debris in off-road conditions. Grease or oil lubrication flexibility ensures compatibility with different motorcycle manufacturers’ specifications, simplifying integration into existing assembly lines.

Evite os custos ocultos de rolamentos de motocicleta de baixa qualidade.

Choosing non-genuine 6311 2RS Motorcycle Bearings may seem cost-effective initially, but the long-term expenses tell a different story. Early failures can damage关联 components like crankshafts or gearbox housings, leading to repair bills 5-10 times the bearing cost. Our fully traceable bearings, backed by NTN’s OEM quality standards, reduce total cost of ownership by minimizing downtime and extending service intervals. Each unit comes with complete documentation, ensuring compliance with export customs requirements and avoiding delays in international shipments.

Por que fabricantes de motocicletas confiam em nosso fornecimento de rolamentos

Com mais de 10 anos de experiência técnica e atendimento em mais de 50 países, destacamo-nos como um parceiro confiável para necessidades de rolamentos para motocicletas. Nosso sistema de inventário em tempo real WMS garante disponibilidade de estoque para pedidos urgentes, enquanto gerentes de conta dedicados oferecem suporte completo, desde a seleção de modelos até o pós-venda. Oferecemos pedidos de teste em pequenos lotes para verificação de qualidade, seguidos por acordos de fornecimento de longo prazo com estoque reservado — perfeitos para alinhar com ciclos de produção. Nossa rede logística global porta a porta entrega para o Sudeste Asiático, Europa e América do Norte dentro dos prazos padrão, com documentação de exportação completa incluída.

Packaging & Shipping

    Embalagem segura em caixa de papelão e palete com etiquetas do produto e informações de rastreabilidade

    Itens em estoque enviados em 3 a 7 dias úteis após a confirmação do pedido

    Envio flexível via DHL, FedEx, UPS, frete aéreo ou marítimo, dependendo da urgência e do volume

    Números de rastreamento em tempo real fornecidos quando a remessa for despachada

    Quantidade mínima de pedido de 1 unidade disponível para reparos emergenciais e testes em pequenos lotes

Receba seus Rolamentos de Motocicleta 6311 Entregues no Prazo

Não deixe que problemas com rolamentos interrompam sua programação de produção ou manutenção. Se você precisa de 10 unidades para reparos urgentes ou 10.000 para produção OEM, nosso processo simplificado garante resposta rápida e entrega confiável. Envie-nos hoje seus requisitos de modelo, detalhes de aplicação e volume do pedido—forneceremos um orçamento formal com certificados de autorização dentro de 24 horas.

Perguntas Frequentes

Q: Estes são rolamentos genuínos ?

A: Sim, somos um distribuidor oficial autorizado . Cada rolamento 6311 vem com documentação completa de rastreabilidade para verificar a autenticidade, incluindo certificados de autorização da marca.

P: Como confirmar se o rolamento 6311 25x52x15mm se encaixa no modelo da minha motocicleta?

A: Provide your motorcycle’s make, model, and engine type, or share the original equipment’s bearing specifications. Our technical team will verify compatibility and recommend the appropriate seal type (ZZ/2RS) and precision grade.

P: Qual é a política de garantia para esses rolamentos?

A: All bearings are covered by NTN’s OEM warranty standards. Manufacturing defects are eligible for unconditional replacement or refund, with support from our dedicated after-sales team.

P: Qual é a quantidade mínima do pedido?

A: Aceitamos pedidos a partir de 1 unidade, tornando-o adequado para manutenção de emergência, testes de amostra ou necessidades de produção em pequenos lotes.

P: Quanto tempo leva o envio para a Europa?

A: Rolamentos 6311 em estoque normalmente são enviados para destinos europeus dentro de 5-7 dias úteis via DHL ou FedEx. Para frete marítimo, a entrega leva 30-40 dias, ideal para pedidos em grandes quantidades.

Q: How can I verify the bearing’s authenticity upon receipt?

A: Each bearing includes NTN’s original packaging with anti-counterfeit labels. We also provide traceability documents linking the product to NTN’s manufacturing batch, which can be cross-verified through 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
6311?

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