Cylindrical Roller Bearing
Class
P4 / P2
Origin
DE / SE
Standard
DIN 620
Lead
3-7 Days
Cylindrical Roller Bearing
In Stock
NNU4920B/SPW33 SKF Double Row Cylindrical Roller Bearing for Precision Machine Tools Open Design
ISO 9001 · DIN Certified
<p>Ensure uncompromising precision for your high-end CNC machine tools with the <strong>SKF NNU4920B/SPW33</strong> double row cylindrical roller bearing—engineered to deliver stable long-term performance in critical motion control applications. Its open design minimizes friction and heat buildup, optimizing spindle accuracy even during extended operation cycles, while the double row configuration provides exceptional radial load capacity for heavy-duty machining tasks.</p><ul><li>Precision-grade construction compliant with ISO 9001 standards ensures consistent quality across your production line</li><li>100mm inner diameter and compact 10x10x10cm single package size simplifies integration into existing machine tool setups</li><li>Backed by SKF's official authorization and our premium shockproof logistics, ensuring reliable delivery and full certification documentation for seamless project compliance</li></ul>
Technical Specifications
- Type
- Cylindrical Roller Bearing
- Precision Class
- P4 / P2
- Certification
- ISO 9001
- Radial Runout
- ≤ 1.5 μm
- Delivery
- 3-7 Business Days
Related Keywords
Reply within 12 hours
NDA available
Full certification docs
Precision packaging
Product Description
Technical Details & Application
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | NNU4920B/SPW33 |
| Type | Roller |
| Number of Row | Double Row |
| Inner Diameter | 100 mm |
| Structure | Cylindrical |
| Seals Type | Open |
| Trademark | SKF |
| Origin | China |
| Single Gross Weight | 0.250 kg |
| Single Package Size | 10×10×10 cm |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Machine Tools | CNC machining centers, precision lathes, grinding machines |
| Aerospace | Aircraft engine components, precision guidance systems |
| Medical Equipment | Surgical robotics, imaging systems |
| Automation | High-speed conveyor systems, robotic arms |
Eliminate Downtime Risks with Genuine SKF NNU4920B/SPW33 Bearings
Precision machine tool operators know the cost of unexpected downtime—hours of lost production, missed deadlines, and expensive repairs. When low-quality bearings fail prematurely, the domino effect disrupts entire workflows. Sourcing authentic high-precision bearings often means navigating long lead times or minimum order quantities that don’t align with urgent maintenance needs.
SKF NNU4920B/SPW33: Engineered for Precision Machine Tool Performance
As an official SKF distributor, we stock the NNU4920B/SPW33 double row cylindrical roller bearing—designed specifically for precision machine tools requiring high radial load capacity and exceptional running accuracy. This open-design bearing features a robust cylindrical structure that excels in spindle applications, where consistent performance under varying speeds directly impacts machining precision. Our ISO 9001 and DIN compliant inspection process ensures every unit meets SKF’s strict quality standards before shipment.
Optimal Performance in Critical Machining Environments
The SKF NNU4920B/SPW33 thrives in high-speed, high-precision environments typical of CNC machine tools. Its double row configuration provides superior radial load handling, making it ideal for heavy-duty cutting operations where stability is non-negotiable. The open design allows for precise lubrication control, a critical factor in maintaining tight tolerances during extended production runs. Whether used in horizontal or vertical spindles, this bearing delivers the reliability needed to minimize unplanned stoppages.
Technical Features That Drive Machining Excellence
The NNU4920B/SPW33’s design incorporates several key attributes that directly enhance machine tool performance. Its 100 mm inner diameter accommodates standard spindle shafts, while the double row construction distributes loads evenly across contact surfaces, reducing stress concentrations. The cylindrical roller structure ensures low friction operation, which translates to lower heat generation and improved energy efficiency during high-speed rotation. As an open bearing, it allows for custom lubrication solutions tailored to specific machining conditions, from dry cutting to high-pressure coolant applications.
Why Authenticity Matters for Your Bottom Line
Counterfeit bearings may offer initial cost savings, but the hidden expenses quickly outweigh the advantage. Substandard materials and poor manufacturing tolerances lead to premature wear, increasing vibration and reducing machining accuracy. A single bearing failure can damage expensive spindle components, resulting in repair costs that exceed the price of 10 genuine units. Our authorized distribution channels guarantee that every SKF NNU4920B/SPW33 bearing is fully traceable, with complete certification documents to validate compliance with OEM requirements.
Your Trusted Partner for Precision Bearing Solutions
With over 800 clients across 45+ countries, we’ve built our reputation on four pillars of reliability: official SKF authorization ensuring genuine products, P4/P2 grade stock availability for immediate fulfillment, senior application engineers providing technical support, and precision testing procedures that verify every bearing meets performance specifications. Our one-stop procurement process simplifies sourcing, allowing you to consolidate orders for multiple brands and categories through a single point of contact, reducing administrative overhead and delivery complexities.
Packaging & Shipping
- Original SKF packaging with product identification label
- Single item packaging: 10×10×10 cm carton with protective padding
- Bulk orders consolidated in 16×16×16 cm outer cartons (0.300 kg gross weight per package)
- Priority delivery options available for emergency maintenance needs
- Full logistics tracking provided from warehouse to delivery
- Minimum order quantity: 1 unit
Get Your Precision Bearing Shipped Today
Don’t let bearing issues delay your production schedule. The SKF NNU4920B/SPW33 is in stock and ready for immediate dispatch. Whether you need a single unit for emergency repair or multiple units for scheduled maintenance, our streamlined process ensures fast, reliable delivery. Every day your machine is down costs money—act now to restore optimal performance.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every bearing comes with full traceability documentation and can be verified through SKF’s official channels.
Q: How do I confirm this bearing fits my machine tool?
A: Our senior application engineers can cross-reference your equipment model or technical specifications to ensure compatibility. Provide your machine details for a free verification.
Q: What is the warranty period?
A: All SKF bearings are covered by the manufacturer’s standard warranty against manufacturing defects. We provide full support for warranty claims and replacements.
Q: What is the minimum order quantity?
A: We accept orders for 1 unit, making us ideal for emergency repairs or small-batch requirements.
Q: How quickly can you ship?
A: In-stock items are shipped within 1 working day. Delivery times vary by location, with express options available for urgent needs.
Q: How can I verify the bearing’s authenticity?
A: Each bearing includes SKF’s original packaging with holographic labels and serial numbers. We also provide certification documents upon request for verification through SKF’s official database.
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Submit your inquiry for NNU4920B/SPW33 SKF Double Row Cylindrical Roller Bearing for Precision Machine Tools Open Design and our senior application engineers will respond within 12 hours with pricing, availability, and technical documentation.
Authorized European Stock
Genuine FAG & SKF, traceable certificates
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Senior engineers, multi-language support
Full Certification Docs
ISO 9001, DIN 620, material certs available