SKF China
High Precision Double Row Cylindrical Roller Bearing NN3040K NN3044K NN3048K P5 P4 W33
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing

High Precision Double Row Cylindrical Roller Bearing NN3040K NN3044K NN3048K P5 P4 W33

Experience smoother, more reliable machinery performance with our High Precision Cylindrical Roller Bearing, designed to minimize vibration and extend equipment lifespan even under heavy loads. The double row NN3040K, NN3044K, and NN3048K models deliver exceptional radial rigidity, ensuring precise alignment for high-speed applications where accuracy can’t be compromised.

  • P5/P4 precision grades reduce rotational clearance, eliminating the frustrating downtime caused by component misalignment
  • W33 lubrication groove design allows for easy maintenance, keeping your operations running without unnecessary interruptions

7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details

Looking for Reliable High Precision Double Row Cylindrical Roller Bearings NN3040K NN3044K NN3048K? Here’s What Matters

Procuring the right cylindrical roller bearings can be challenging when faced with countless brands and型号 across metric and imperial standards. Many buyers struggle with frequent maintenance issues in hard-to-reach equipment or encounter premature failures due to substandard material hardness and precision. Sourcing from multiple suppliers just to compare prices and delivery times only adds to the complexity.

Built for Heavy-Duty Performance Across Industries

Our high precision double row cylindrical roller bearings NN3040K, NN3044K, and NN3048K in P5, P4 accuracy classes with W33 lubrication grooves address these pain points directly. As a专业 bearing supplier with ISO 9001 certified production and inspection processes, we maintain extensive inventory across full product lines—from关节轴承 to stainless steel bearings—enabling one-stop procurement. These bearings excel in applications like steel mill rolling stands, hydraulic press spindles, and heavy-duty gearboxes where high radial load capacity and precise shaft guidance are critical.

Rendimiento Óptimo en Condiciones de Operación Exigentes

Designed to handle heavy radial loads and moderate axial loads in both directions, these double row cylindrical roller bearings operate reliably in temperatures ranging from -30°C to 120°C. Their robust construction makes them ideal for high-speed rotating machinery in mining equipment, wind turbine gearboxes, and automation systems where vibration resistance and dimensional stability are non-negotiable. The W33 lubrication groove ensures efficient grease distribution, reducing maintenance frequency compared to non-grooved alternatives.

Detalles de ingeniería que garantizan la longevidad

The NN3040K, NN3044K, and NN3048K series feature precision ground raceways and rollers that achieve P4/P5 accuracy levels, minimizing rotational backlash and ensuring smooth operation. Made from high-quality chrome steel with surface hardness exceeding 60 HRC, these bearings deliver exceptional wear resistance and fatigue life under continuous load. The double row design provides higher radial load capacity than single row alternatives, while the separable inner ring allows for easy mounting and dismounting during maintenance. Interchangeable dimensions with major international standards ensure compatibility with existing equipment.

Por qué los rodamientos de precisión reducen el costo total de propiedad

Choosing bearings with proper precision class directly impacts equipment uptime and maintenance costs. Inferior bearings with inadequate hardness or loose tolerances often cause excessive vibration, leading to premature wear of adjacent components like shafts and housings. Our bearings’ strict quality control—including原材料检验 and成品 testing for dimensions, hardness, and surface finish—prevents these issues. While initial investment may be higher than low-cost alternatives, the extended service life and reduced downtime result in lower total cost of ownership over time, aligning with ISO 281 bearing life calculation principles.

Calidad en la que puedes confiar

Our manufacturing and testing processes adhere to ISO 9001 standards, ensuring consistent quality across every bearing. Each unit undergoes rigorous inspection, including dimensional accuracy checks, hardness testing, and surface finish analysis. We provide a standard质保期 covering manufacturing defects, with clear terms for replacement or refund. Beyond our own brand, we offer procurement services for international brands like SKF, NSK, NTN, and domestic优质品牌, all sourced through verified supply channels. With substantial现货库存, we can fulfill orders quickly, even for small quantities.

Packaging & Shipping

    Embalaje industrial neutro con tratamiento anti-óxido

    Envío el mismo día para artículos en stock

    Opciones de envío flexibles: mensajería exprés, transporte aéreo o transporte marítimo

    Bajo mínimo de cantidad de pedido, apoyando tanto pedidos de prueba como compras al por mayor

Request Technical Details or a Custom Quote

Whether you need the NN3040K, NN3044K, NN3048K, or other cylindrical roller bearings, provide your required model, quantity, and delivery location for a detailed quote. Our technical team can also assist with cross-referencing alternative品牌型号 to ensure compatibility with your equipment. The sooner you confirm your requirements, the sooner we can arrange shipment.

Preguntas Frecuentes

Q: ¿Suministran rodamientos de otras marcas además de la suya propia?

A: Yes, we support procurement of all major international and domestic品牌, supplying according to customer-specified brand and型号 requirements.

Q: ¿Cómo puedo confirmar si este rodamiento se ajusta a mi equipo?

A: Provide your equipment model or existing bearing dimensions (d x D x B), and our engineering team will verify compatibility and suggest suitable alternatives if needed.

P: ¿Cuál es su política de garantía para estos rodamientos?

A: We provide a standard质保期 against manufacturing defects. Specific terms, including duration and coverage, are detailed in each sales contract.

Q: What is the minimum order quantity for these precision bearings?

A: We offer low minimum order quantities, allowing customers to place small trial orders before committing to larger purchases.

P: ¿Qué tan rápido pueden enviar y qué métodos de entrega están disponibles?

A: In-stock bearings ship the same day. We offer express courier for urgent orders, air freight for medium volumes, and sea freight for cost-effective bulk shipments.

Q: Do you provide OEM or ODM customization services?

A: Yes, we support custom bearing manufacturing according to customer-provided drawings, specifications, or samples for both OEM and ODM requirements.

Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
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Product Summary
Product Name
High Precision Double Row Cylindrical Roller Bearing NN3040K NN3044K NN3048K P5 P4 W33
Category
Cylindrical Roller Bearing
Brand
SKF
Certification
ISO 9001 · TS 16949
Lead Time
7 Working Days
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Our engineers will respond within 12 hours with a tailored solution.

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Why SKF China

The engineering partner advantage

7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
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