Double Row Cylindrical Roller Bearing NNU4938 B/Sp W33 for Heavy-Duty Industrial Machinery with Brass Cage
<p>Ensure uninterrupted performance in heavy-duty industrial machinery with the <strong>Double Row Cylindrical Roller Bearing NNU4938 B/Sp W33</strong>, engineered to handle extreme radial loads while maintaining precision under high-speed operation. Its brass cage construction reduces friction and heat buildup, extending service life in critical applications like steel mills and mining equipment.</p><ul><li>Non-aligning design with W33 lubrication groove ensures consistent maintenance access and optimal performance in fixed-shaft configurations</li><li>Bearing steel construction with 60-64 HRC hardness delivers exceptional durability for continuous heavy-load operations</li><li>Separated inner and outer rings allow for easy installation and replacement, minimizing downtime during maintenance</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 Range | Medium and Large (120-190mm) |
| Material | Bearing Steel |
| Alignment Capability | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separable Design | Separated |
| Internal Clearance | C0, C2, C3, C4, C5 |
| Cage Material | Brass, Steel |
| Vibration Class | Z1V1, Z2V2, Z3V3 |
| Surface Hardness | 60-64 HRC |
| Transport Package | Carton Pallet |
| Origin | Jiangsu, China |
| HS Code | 8482800000 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Heavy-Duty Industrial Machinery | Power transmission systems, gearboxes, rolling mills |
| General Manufacturing | Large-scale rotating equipment, precision machine tools |
Need a Durable NNU4938 B/Sp W33 Double Row Cylindrical Roller Bearing? Here's What to Check
Selecting the right heavy-duty industrial bearing often means the difference between smooth operation and unexpected downtime. Many buyers face challenges with misaligned dimensions, questionable material quality, or limited availability of specific models like the NNU4938 B/Sp W33. These issues can lead to costly installation delays or premature bearing failure in critical machinery.
Engineered for Reliable Performance in Heavy-Duty Applications
Our Double Row Cylindrical Roller Bearing NNU4938 B/Sp W33 with Brass Cage addresses these pain points through precision manufacturing and comprehensive supply capabilities. As a supplier with ISO 9001 certified processes, we ensure each bearing meets strict dimensional and hardness standards (60-64 HRC), making it suitable for heavy loads in industrial machinery. With a separated design and multiple clearance options (C0-C5), this bearing offers flexibility for various installation requirements, supported by our extensive inventory for quick delivery.
Optimal Performance in High-Load Industrial Environments
This Heavy-Duty Industrial Bearing excels in applications involving high axial and radial loads, such as gearboxes and rolling mills. The brass cage provides enhanced durability and heat resistance, maintaining stability even under continuous operation. With vibration classes up to Z3V3, it minimizes noise and vibration transfer, critical for precision machinery. The non-aligning design requires proper mounting alignment but delivers superior load capacity compared to self-aligning alternatives in rigidly supported systems.
Key Engineering Features That Impact Longevity
The bearing's separated structure allows for easy mounting and dismounting, simplifying maintenance procedures. Bearing steel construction ensures high fatigue resistance, while the 60-64 HRC hardness rating provides excellent wear resistance against abrasive contaminants. Available clearance classes (C0-C5) let you optimize for thermal expansion or preload requirements—C3 clearance, for example, suits applications with moderate temperature variations. The brass cage option reduces friction compared to steel cages, extending service life in high-speed operations.
Why Choosing the Right Bearing Lowers Total Cost
Investing in a quality Double Row Bearing with Brass Cage reduces long-term costs by minimizing downtime and replacement frequency. Inferior bearings often fail early due to substandard materials or imprecise manufacturing, leading to unplanned maintenance and production losses. This bearing's compliance with international standards ensures interchangeability with major brands, eliminating the need for costly equipment modifications. By selecting the correct clearance and cage material upfront, you avoid premature failures caused by misapplication, ultimately lowering your total cost of ownership.
Quality Assurance You Can Verify
Our manufacturing process adheres to ISO 9001 standards, with rigorous testing for dimensional accuracy, hardness, and surface finish. Each bearing undergoes inspection before shipment, and we provide material certificates for traceability. We offer a warranty against manufacturing defects, with clear terms outlined in our supply agreements. Our global network includes multiple sourcing channels, ensuring we can fulfill orders for both standard and hard-to-find bearing models, including the NNU4938 B/Sp W33. Stock availability means most orders ship within 1-3 business days, reducing your inventory holding costs.
Packaging & Shipping
- Standard packaging: Carton with pallet reinforcement for bulk orders
- Expedited shipping options available for urgent requirements
- Flexible logistics: Door-to-door delivery via courier, air, or sea freight
- Low minimum order quantity supported for prototype or maintenance needs
Get a Quote for Your NNU4938 B/Sp W33 Bearing Requirement
Whether you need a single unit for maintenance or bulk quantities for production, we can provide competitive pricing and delivery timelines. Share your specific requirements, including quantity, application details, and delivery location, and our technical team will confirm compatibility and submit a quote within 24 hours. Early inquiry ensures priority handling, especially for specialized configurations like the brass cage variant.
Frequently Asked Questions
Q: Can you supply other brands or models of cylindrical roller bearings?
A: Yes, we support procurement of all major bearing brands and models. Simply provide the brand, model number, or dimensional specifications (d x D x B), and we can source accordingly.
Q: How do I confirm if this NNU4938 B/Sp W33 bearing fits my equipment?
A: Provide your equipment model or existing bearing dimensions (bore diameter, outer diameter, width), and our technical team will cross-verify compatibility with standard specifications.
Q: What is your warranty policy for this bearing?
A: We offer a warranty against manufacturing defects. The specific duration and terms are detailed in our sales contract, typically covering 12 months from delivery under normal operating conditions.
Q: What is the minimum order quantity for this bearing?
A: We accept low minimum order quantities, including single-unit purchases, to support maintenance and prototyping needs. Volume discounts apply for bulk orders.
Q: How long does shipping take to [my location]?
A: For in-stock items, domestic shipping takes 1-3 days, while international delivery typically ranges from 5-15 days depending on the destination and selected shipping method (express, air, or sea).
Q: Do you offer custom bearing solutions if this model doesn't meet my needs?
A: Yes, we support OEM/ODM customization. Provide your detailed requirements (dimensions, material, cage type, clearance, etc.), and our engineering team can develop a tailored solution.
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 NNU4938 B/Sp W33 for Heavy-Duty Industrial Machinery with Brass Cage
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