NSK Nu2221em Nu2222em Nu2224em Cylindrical Roller Bearing
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SKF
Angular Contact Ball Bearing
ISO 9001
TS 16949
Genuine SKF
50+ Countries
24h Response
-- SKF Authorized Engineering Partner
Japan NTN High Precision Deep Groove Ball Bearings
Ensure smooth, high-precision performance in your machinery with NTN Deep Groove Bearings, designed to deliver long life and minimal noise even at high speeds. Crafted from durable bearing steel, these Japan NTN High Precision Deep Groove Ball Bearings (model 256706) feature a double-row design that enhances radial load capacity, addressing the common challenge of maintaining stability under continuous operation.
- Precision ratings from P0 to P2 available for applications requiring tight tolerance control
- Grease or oil lubrication flexibility adapts to your specific operating environment
- 25*52*42 mm specification ensures compatibility with standard industrial setups
- Rich stock availability means you can minimize downtime with quick fulfillment
Technical Specifications
- Product Name
- Japan NTN High Precision Deep Groove Ball Bearings
- Category
- Angular Contact 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
Tipo de Rolamento
Rolamento de esferas de ranhura profunda
Separado
Não separado
Número de Linhas
Duplo
Direção de Carga
Rolamento Radial
Material
Aço para rolamentos
Nome do produto
Rolamento de Cubo de Roda
Lubrificação
Graxas ou Óleo
Classificação de Precisão
P0 P6 P5 P4 P2
Vibração
Especificação
25*52*42 mm
Origem
China
Código HS
8482109000
Adequação da Aplicação
Indústria
Aplicações Típicas
Automotivo
Conjuntos de cubo de roda
Maquinário industrial
Finding the right deep groove ball bearing for your equipment can be challenging. Many buyers struggle with mismatched dimensions causing installation delays, or low-quality bearings that fail prematurely under heavy loads. Sourcing from multiple suppliers to compare brands and lead times only adds to the frustration. Our Japan NTN High Precision Deep Groove Ball Bearings address these pain points with a design focused on durability and precision. Manufactured under ISO 9001 certified processes, each bearing undergoes strict material and dimensional inspections. With rich stock availability, we support quick delivery for both small and large orders, ensuring your production stays on schedule. This double-row radial bearing is ideal for automotive wheel hubs and industrial machinery requiring reliable radial load handling at high speeds. Desempenho ideal em condições exigentes
This deep groove ball bearing excels in applications where consistent radial load support and low noise operation are critical. With a specification of 25*52*42 mm, it accommodates standard mounting requirements while maintaining high precision across P0 to P2 rating classes. The bearing steel construction provides excellent hardness and wear resistance, making it suitable for continuous operation in temperatures typical of automotive and industrial environments. Principais características de engenharia que afetam a confiabilidade
The double-row design of this bearing enhances radial load capacity compared to single-row alternatives, making it suitable for heavier load applications like wheel hubs. Precision rating options (P0 to P2) allow customization based on application requirements—higher precision grades (P4, P2) reduce vibration and noise for sensitive equipment, while standard grades (P0, P6) offer cost-effective solutions for general use. Vibration classes Z1V1 to Z3V3 further ensure smooth operation, with higher classes minimizing operational noise and extending bearing life. The unseparated construction simplifies installation and maintenance, reducing downtime during assembly or replacement. Por que a escolha do rolamento certo reduz o custo total Selecting a high-quality deep groove ball bearing directly impacts your equipment’s total cost of ownership. Inferior bearings with substandard material hardness or imprecise dimensions often lead to early wear, causing unexpected downtime and costly repairs. This bearing’s long life design, combined with proper lubrication (grease or oil), reduces maintenance frequency and extends service intervals. By following ISO 281 fatigue life standards, it delivers predictable performance, helping you avoid the hidden costs of premature failure and unplanned maintenance. Garantia de Qualidade em Que Você Pode Confiar
Our commitment to quality starts with ISO 9001 certified production and inspection processes. Each bearing undergoes rigorous原材料 testing and finished product checks for dimensions, hardness, and surface treatment. We stand behind our products with a warranty against manufacturing defects, ensuring you receive reliable components. With access to both our own brand and international brands like NTN, we can source bearings to your exact specifications, whether you need standard models or custom solutions. Embalado em caixas e paletes para transporte seguro
Amplo estoque disponível para atendimento imediato dos pedidos
Opções flexíveis de envio, incluindo transporte marítimo, aéreo e entrega expressa
Ready to secure reliable bearings for your application? Provide us with the model number, required quantity, and delivery location, and we’ll promptly send you a competitive quote. We also offer sourcing services for other bearing brands and models—just share your specifications, and our team will assist with your procurement needs. Perguntas frequentes
P: Vocês oferecem suporte para a aquisição de outras marcas e modelos de rolamentos?
A: Yes, we offer comprehensive sourcing services covering our own brand, international brands (including SKF, NSK, NTN, Koyo, NACHI, IKO, FAG, Timken), and domestic quality brands. We can supply bearings according to your specified brand or model requirements. P: Como posso verificar se este rolamento é compatível com o meu equipamento?
A: Provide your equipment’s required bearing dimensions (bore diameter, outer diameter, width) or existing model number, and our technical team will verify compatibility with the 256706 deep groove ball bearing. P: Qual é a política de garantia para este rolamento?
A: We provide a warranty against manufacturing defects. Specific warranty terms and duration are outlined in our sales contract, ensuring coverage for material and workmanship issues. Q: Qual é a quantidade mínima de pedido para este rolamento?
A: We offer low minimum order quantities to accommodate both small-batch trial orders and large-scale production needs. Contact us for details on current stock availability and MOQ. Q: How quickly can you ship this bearing, and what shipping methods are available? A: With rich stock availability, we can ship orders promptly. Shipping options include sea freight, air freight, and express courier services, depending on your delivery timeline and location. P: Vocês oferecem personalização OEM/ODM para rolamentos?
A: Yes, we support OEM and ODM services. We can manufacture bearings according to your provided drawings, specifications, or performance requirements. Ready to order or need a quote?
256706
Z1V1 Z2V2 Z3V3
Rotary components requiring radial load support
Need Reliable Japan NTN High Precision Deep Groove Ball Bearings Model 256706? Avoid These Common Issues
Engineered for Long Life and High-Speed Performance
Packaging & Shipping
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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.
01
Authorized SKF Engineering Partner
Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
02
15+ Certified Engineers On-Staff
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
03
ISO 9001 & TS 16949 Certified QC
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
04
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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