-- SKF Authorized Engineering Partner
NSK Koyo N203em NJ203em High Precision Cylindrical Roller Bearing
Experience smoother, more reliable machinery performance with our High Precision Cylindrical Roller Bearing, designed to minimize vibration and extend equipment lifespan. The NSK Koyo N203em NJ203em models deliver consistent precision, ensuring your operations run with minimal downtime and maximum efficiency.
- Choose between grease or oil lubrication to match your specific application needs
- Available in 17*35*8mm specification with Z1V1-Z3V3 vibration grades for tailored performance
- Rich stock availability means fast delivery by express, road, train, air, or sea—so you get what you need when you need it
- OEM/ODM services available to customize the bearing to your exact requirements
- Product Name
- NSK Koyo N203em NJ203em High Precision Cylindrical Roller Bearing
- Category
- Deep Groove Ball Bearing
- Quality Standard
- ISO 9001 / TS 16949
- Lead Time
- 8-12 Weeks Custom
- Minimum Order
- Negotiable
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
Especificações do Produto
Parâmetro
Detalhes
Número do Modelo
Diâmetro interno (d)
Diâmetro externo (D)
Largura (B)
Disponibilidade em estoque
Ações Ricas
Tipo de lubrificação
Graxas ou Óleo
Classe de vibração
, Opções de serviço
OEM, ODM
Formas de entrega
Expresso, rodoviário, ferroviário, aéreo, marítimo
Disponibilidade de amostras
Disponível
Taxa de entrega dentro do prazo
100,0%
Tempo de resposta
Menos de 0,5 h
Pacote de transporte
Caixa, Palete
BDL, , Origem
China
Código HS
8482102000
Adequação da Aplicação
Indústria
Aplicações Típicas
Equipamentos de automação
Sistemas de transporte, maquinário de precisão
Maquinário industrial
Bombas hidráulicas, motores elétricos
Automotivo
Cubos de roda, componentes de transmissão
Many buyers struggle with finding the right cylindrical roller bearings—whether it’s matching obscure model numbers across brands, dealing with long lead times, or discovering premature failures from substandard components. When your equipment relies on precise motion control, choosing the wrong bearing can lead to costly downtime and repairs. Projetado para oferecer desempenho consistente em aplicações exigentes
Our NSK Koyo N203em NJ203em high precision cylindrical roller bearings address these challenges directly. With interchangeable dimensions following international standards, they fit seamlessly into existing equipment designs. Backed by ISO 9001 certified production processes, each bearing undergoes strict dimensional and hardness testing to ensure reliability. Whether used in automated manufacturing lines or industrial gearboxes, these bearings deliver the precision and durability required for continuous operation. Desempenho ideal em ambientes com carga moderada e alta velocidade
This cylindrical roller bearing excels in applications with radial loads and moderate axial loads, operating efficiently at speeds up to 15,000 RPM depending on lubrication and cooling conditions. Its design features a separable inner or outer ring, simplifying installation and maintenance in tight spaces. The Z1V1 to Z3V3 vibration classes allow selection based on noise sensitivity—critical for precision instruments and quiet operation requirements. Principais características de engenharia que afetam a confiabilidade
The 17x35x8mm dimension ensures compatibility with common shaft and housing configurations, while the high-grade grease technology provides effective lubrication under varying temperatures. Cylindrical roller bearings distribute load evenly across the rolling elements, reducing stress concentration compared to ball bearings—making them ideal for applications with heavy radial loads. The precision class maintains tight tolerances, minimizing runout and ensuring smooth rotation, which is essential for maintaining product quality in machining operations. Por que os rolamentos de precisão reduzem o custo total de propriedade
Choosing a high precision cylindrical roller bearing may seem like a higher initial investment, but it pays off through extended service life and reduced maintenance. Inferior bearings often fail prematurely due to inconsistent material hardness or poor dimensional accuracy, leading to unplanned downtime and replacement costs. Our bearings’严格的质量控制 ensures predictable performance, allowing for accurate maintenance scheduling and lowering overall operational expenses. When calculating total cost, consider not just the purchase price but also the savings from fewer replacements and less production disruption. Qualidade em que você pode confiar
All bearings are produced under ISO 9001 quality management systems, with raw material inspection and finished product testing for dimensions, hardness, and surface treatment. We offer a warranty against manufacturing defects, ensuring you receive bearings that meet specified performance standards. With rich stock availability, we can fulfill orders quickly, reducing lead times for your production needs. Our ability to source from multiple trusted brands, including NSK and Koyo, ensures you get the right bearing for your application—whether you need an exact replacement or a compatible alternative. Os itens em estoque são enviados em até 24 horas após a confirmação do pedido
Solicite hoje mesmo sua cotação de rolamentos de rolos cilíndricos
Whether you need the N203em, NJ203em, or any other cylindrical roller bearing model, we can provide pricing and availability quickly. Simply share the bearing model, dimensions, required quantity, and destination, and our team will respond within 0.5 hours. With our extensive inventory and multi-brand sourcing capability, we make it easy to get the bearings you need when you need them. Perguntas frequentes
Q: Do you supply bearings from other brands besides NSK and Koyo? A: Yes, we source bearings from a wide range of international and domestic brands, including NTN, NMB, NACHI, Timken, and BDL, as well as custom OEM options. P: Como posso verificar se este rolamento é compatível com o meu equipamento?
A: Provide your equipment model or existing bearing dimensions (inner diameter, outer diameter, width), and our technical team will verify compatibility with the N203em/NJ203em specifications. P: Qual é a política de garantia para esses rolamentos?
A: We offer a warranty against manufacturing defects. The specific warranty period is determined by the application and will be detailed in your order confirmation. Q: Qual é a quantidade mínima de pedido para este rolamento?
A: We support low minimum order quantities, including single-unit purchases for maintenance needs, with volume discounts available for larger orders. Q: Quanto tempo leva o envio para [minha localização]?
A: Shipping time depends on the method selected. Express delivery typically takes 3-5 days, air freight 5-7 days, and sea freight 20-30 days to most major destinations. Q: Can you produce custom bearings according to my specifications? A: Yes, we offer OEM and ODM services for custom bearing designs. Provide your technical drawings or performance requirements, and we can develop a solution tailored to your needs. Ready to order or need a quote?
16003-2Z, 4203ATN9, 430ATN9
17mm
35mm
8mm
Trademarks Available
,
Need High Precision Cylindrical Roller Bearings? Avoid Common Sourcing Pitfalls
Packaging & Shipping
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
Contact us via email or phone for immediate assistance.
Wind Power
Main shaft, gearbox, and generator bearings for onshore and offshore wind turbines. Engineered for 20+ year service life.
Mining & Heavy Industry
Crushers, conveyors, and processing equipment bearings designed to withstand shock loads and contaminated environments.
Steel & Metallurgy
Rolling mill and continuous casting bearings rated for extreme temperatures, heavy loads, and aggressive lubricants.
Automotive & EV
Hub units, transmission, and electric motor bearings meeting TS 16949 requirements for passenger and commercial vehicles.
Precision Machinery
Machine tool spindle and robotics bearings with P4/P2 accuracy class for ultra-precise positioning and minimal vibration.
General Industrial
Pumps, fans, compressors, and conveyor systems across all manufacturing sectors requiring reliable, cost-effective bearing solutions.
Authorized SKF Engineering Partner
Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
15+ Certified Engineers On-Staff
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
ISO 9001 & TS 16949 Certified QC
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
Global Logistics to 50+ Countries
Dedicated account managers and reliable delivery networks ensure on-time supply for enterprise clients worldwide.
Performance Metrics
35%
Failures Prevented
70%
Downtime Reduction
25+
Years Experience
24h
Quote Response
78% of large enterprises prefer suppliers offering integrated technical support and lifecycle services.
Application Design
EngineeringCustom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.
Failure Analysis
DiagnosticsRoot-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.
Predictive Maintenance
IIoTIIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.
Custom Modification
CustomModified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.
On-Site Installation
SupportCertified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.
Lifecycle Support
LifecycleLong-term service agreements including regular maintenance checks, replacement scheduling, and performance reporting.
Free samples available for orders over $50K
Validated against your KPIs before full production commitment.
-- Get In Touch
Request a Technical Consultation & Quote
Our certified engineers will review your application requirements and provide a detailed quote within 24 hours.
Address
No. 377 Bansongyuan Road, Huangpu District, Shanghai, China
Free Sample Program
Orders over $50K qualify for free product samples
Test against your KPIs before full production commitment. Ask our engineers for details.
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SKF Authorized Engineering Partner
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