Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 for Heavy Duty Industrial Machinery
<p>Ensure uninterrupted performance in heavy-duty industrial machinery with the <strong>Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33</strong>, engineered to deliver exceptional load capacity and rigidity for critical applications. This SKF cylindrical roller bearing features a separable design with brass or steel cage options, allowing for easy maintenance and precise mounting—key for minimizing downtime in high-stress operations like steel mills and mining equipment.</p><ul><li>Medium and large outer dimensions (120-190mm) paired with 60-64 HRC hardness ensure durability under extreme conditions</li><li>W33 lubrication groove and clearance options (C0-C5) provide customizable performance to match specific machinery requirements</li><li>100% genuine SKF construction with full traceability, backed by official factory warranty for long-term reliability</li></ul>
- 100% genuine -- COC & factory certificates available
- In-stock · bulk & small-batch orders accepted
- ISO · DIN · ABMA · JIS compliant
- Full customs clearance documentation provided
Product Details
Full Specifications & Description
Product Specifications
| Parameter | Details |
|---|---|
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage | Brass, Steel |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| HS Code | 8482800000 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Heavy Duty Industrial Machinery | High-load rotating equipment, industrial gearboxes, large-scale mechanical transmissions |
Struggling with Bearing Failures in Heavy Machinery? The NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing Makes a Difference
Industrial operations often face unexpected downtime due to bearing issues—premature wear from material inadequacies, misalignment problems from imprecise manufacturing, or compatibility issues when replacing critical components. Sourcing reliable heavy duty bearings that meet exact specifications can be a complex process, especially when dealing with multiple suppliers and uncertain quality standards.
Engineered for Heavy-Duty Performance and Reliability
The NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing addresses these challenges with its robust design and precise engineering. As a specialized supplier with ISO 9001 certified processes, we ensure each bearing meets strict quality standards, from raw material selection to final inspection. Our extensive inventory covers a wide range of industrial bearings, including this heavy duty cylindrical roller bearing, available for same-day shipping to minimize your operational delays.
Optimal Performance in Demanding Industrial Environments
This double row cylindrical roller bearing excels in heavy duty industrial machinery applications where high axial and radial loads are present. With an outer dimension range of 120-190mm, it is specifically designed to handle the rigorous demands of large-scale equipment such as industrial gearboxes, heavy-duty rotating machinery, and power transmission systems. Its separated structure allows for easy installation and maintenance, even in tight mechanical configurations.
Key Engineering Features That Enhance Durability
The bearing's construction from high-quality bearing steel, hardened to 60-64 HRC, provides exceptional wear resistance and load-carrying capacity. Available with brass or steel cages, it offers flexibility to match specific application requirements—brass cages for higher speed operations and steel cages for enhanced rigidity in heavy load scenarios. The clearance options (C0, C2, C3, C4, C5) allow precise tailoring to operating conditions, ensuring optimal performance and minimizing vibration, which is further controlled by Z1V1, Z2V2, and Z3V3 vibration classes.
Why Choosing the Right Bearing Reduces Total Cost of Ownership
Selecting a precision-engineered heavy duty roller bearing like the NNU4921 B/Sp W33 directly impacts your bottom line. Inferior bearings may seem cost-effective initially but often lead to frequent replacements, unplanned downtime, and potential damage to adjacent components. This bearing's robust design and quality construction minimize these risks, extending service life and reducing maintenance costs. By adhering to international standards, it ensures compatibility with existing systems, avoiding the need for costly modifications or adaptations.
Quality Assurance You Can Trust
Our commitment to quality is backed by ISO 9001 certified production and inspection processes. Each bearing undergoes thorough testing, including dimensional accuracy checks, hardness verification, and surface treatment evaluations. We provide a warranty against manufacturing defects, ensuring you receive a reliable product that meets your specifications. With access to a comprehensive range of brands and models, we can source and supply the exact bearing you need, whether it's a standard size or a hard-to-find component.
Packaging & Shipping
- Securely packaged in cartons and pallets to ensure product integrity during transportation
- Available for immediate dispatch from stock for urgent requirements
- Flexible shipping options including express courier, air freight, and sea freight to meet your delivery timeline
- Low minimum order quantity supported, ideal for both small-scale maintenance and large-volume production needs
Get Your NNU4921 B/Sp W33 Bearing Quote Today
Whether you need a single unit for emergency replacement or bulk quantities for production, we can provide competitive pricing and reliable delivery. Simply share the bearing model, required quantity, and destination details, and our team will promptly assist with your order, ensuring you get the right heavy duty cylindrical roller bearing when you need it.
Frequently Asked Questions
Q: Do you supply bearings from other brands or models?
A: Yes, we support procurement of bearings across all major international and domestic brands, as well as custom specifications. Simply provide the required brand, model, or dimensions for a quote.
Q: How can I confirm if this bearing fits my equipment?
A: Provide your equipment model or the specific dimensions (bore diameter, outer diameter, width) of the bearing you need to replace, and our technical team will verify compatibility.
Q: What is your warranty policy for this bearing?
A: We offer a warranty against manufacturing defects. The specific terms are detailed in our supply contract, ensuring coverage for any quality issues arising from production.
Q: What is the minimum order quantity for this bearing?
A: We accept low minimum order quantities, including single units, to support both small maintenance needs and large-scale production requirements.
Q: How quickly can you ship the NNU4921 B/Sp W33 bearing?
A: This bearing is available from stock, enabling same-day shipping for urgent orders. Delivery time depends on your location and chosen shipping method.
Q: Do you offer OEM or ODM customization for bearings?
A: Yes, we support custom bearing production according to your technical drawings, specifications, or sample requirements for specialized applications.
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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Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 for Heavy Duty Industrial Machinery
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