Mining & Metallurgy
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
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100% Genuine SKF
Full Traceability
ISO 9001 Certified
SKF Authorized
Cylindrical Roller Bearing
SKF NNU4920B/SPW33 Double Row Cylindrical Roller Bearing for Industrial Equipment OEMs
SKF NNU4920B/SPW33 Double Row Cylindrical Roller Bearing for Industrial Equipment OEMs
In Stock · Ready to Ship
<p>Ensure uninterrupted industrial equipment performance with the <strong>SKF NNU4920B/SPW33</strong> double row cylindrical roller bearing, designed to deliver exceptional radial load capacity and precision for OEM applications. As an official SKF distributor, we guarantee 100% genuine bearings with full traceability documentation, eliminating common supply chain risks.</p><ul><li>Double row cylindrical structure provides superior rigidity for high-speed machinery, reducing downtime from premature wear</li><li>100mm inner diameter with open seal design optimizes heat dissipation—critical for continuous operation in heavy-duty industrial environments</li><li>Backed by SKF-certified technical support and global door-to-door logistics, ensuring your production line stays on schedule</li></ul>
Bore (d)
--
Outer Dia. (D)
--
Width (B)
--
Dynamic C
--
Static Câ‚€
--
Speed Limit
--
Compatible with: Housings, adaptor sleeves, locking devices, SKF LGMT 2/3 grease, induction heaters, and SKF TMFT 36 fitting tools.
Formal quotation with SKF traceability cert within 24 hours · Sample orders available
24h Response
Quotation & Cert
60+ Countries
DDP/DAP/CIF
ISO 9001
Quality Certified
Full Specifications
Complete Technical Parameters
SKF NNU4920B/SPW33 Double Row Cylindrical Roller Bearing for Industrial Equipment OEMs -- Parameter Sheet
SKF · Cylindrical Roller Bearing
| Parameter | Value | Unit / Note |
|---|---|---|
| Bearing Series | -- | Cylindrical Roller Bearing |
| Bore Diameter (d) | -- | mm |
| Outer Diameter (D) | -- | mm |
| Width / Height (B) | -- | mm |
| Dynamic Load Rating (C) | -- | kN |
| Static Load Rating (Câ‚€) | -- | kN |
| Fatigue Limit Load (Pu) | -- | kN |
| Reference Speed | -- | r/min |
| Limiting Speed | -- | r/min |
| Mass | -- | kg |
| Clearance Class | C3 | ISO 281 |
| Cage Material | -- | -- |
| Sealing / Shield | -- | -- |
| Lubrication | Grease / Oil bath | -- |
| Operating Temp. Range | −30 to +120 °C | -- |
| Vibration Level | SKF E1 / Standard | -- |
| Misalignment Tolerance | -- | ° |
| Fit Recommendation (shaft) | -- | ISO |
| Fit Recommendation (housing) | -- | ISO |
| Replacement / Cross Ref. | -- | -- |
* All specifications are reference values. Contact our SKF engineers for application-specific confirmation.
Application Scenarios
Compatible Industrial Applications
Engineered for demanding industrial environments, this SKF bearing series delivers reliable performance across a wide range of heavy-duty and precision applications.
Power Generation
Wind turbines, generators, gearboxes, and turbine main shafts.
Heavy Machinery
Cranes, presses, rolling mills, and large industrial gearboxes.
Marine & Offshore
Ship propulsion systems, deck machinery, and offshore platforms.
Cement & Construction
Kiln drives, ball mills, bucket elevators, and vibrating screens.
Pulp & Paper
Paper machine rolls, dryer sections, and calender rolls.
Full Portfolio
One-Stop SKF Supporting Solutions
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Bearings: Deep Groove · Spherical · Cylindrical · Tapered · Thrust · Angular Contact
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Sealing: Radial shaft seals · V-rings · Labyrinth seals · Bearing isolators
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Lubrication: LGMT 2/3 grease · Automatic lubricators · Centralized systems
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Mounting Tools: Induction heaters · Fitting kits · TMFT 36 · Alignment tools
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Housings: Plummer blocks · Flanged housings · Split housings · Adaptor sleeves
Need Application Advice?
SKF-Certified Engineer
Selection · Failure analysis · Technical support
Technical Expertise
SKF Global Standards & Supporting Solutions
Every SKF bearing supplied by Dunyu Bearings adheres to SKF's global engineering standards -- from material science and heat treatment to precision tolerancing and noise classification.
Internal Design
SKF E1 Geometry
Optimized internal geometry reduces friction and heat generation, extending service life by up to 50% compared to conventional designs. Ideal for high-speed and high-temperature applications.
ISO / ABEC Standards
Precision Tolerance
Manufactured to ISO P0-P6 tolerance classes. Dimensional accuracy and running accuracy are 100% verified before shipment, with full batch traceability records.
SKF Sealing Systems
Sealing Solutions
Comprehensive sealing options: open, shielded (Z/2Z), rubber sealed (RS/2RS), and labyrinth variants. SKF V-rings and radial shaft seals available as integrated solutions.
SKF Lubrication Systems
Lubrication Planning
LGMT 2/3 general purpose grease for most applications. LGEP 2 for heavy loads, LGHP 2 for high temperatures. SKF automatic lubricators (SYSTEM 24) for continuous re-lubrication.
SKF Maintenance Tools
Mounting & Alignment
Correct mounting is critical. SKF TMFT 36 fitting tool kit, induction heaters (TIH 030M/100M), and laser alignment tools ensure damage-free installation and maximum service life.
Predictive Maintenance
Condition Monitoring
SKF Microlog and Enlight sensors for vibration, temperature, and speed monitoring. Enable predictive maintenance strategies to minimize unplanned downtime and optimize bearing replacement intervals.
Product Details
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | NNU4920B/SPW33 |
| Type | Roller |
| Number of Row | Double Row |
| Structure | Cylindrical |
| Inner Diameter (d) | 100 mm |
| Seals Type | Open |
| Trademark | SKF |
| Origin | China |
| Single Gross Weight | 0.250 kg |
| Single Package Size | 10×10×10 cm |
| Package Size | 16.00×16.00×16.00 cm |
| Package Gross Weight | 0.300 kg |
| Selling Units | Single Item |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Industrial Machinery | CNC Machine Tools, Gearboxes, Spindles |
| Power Transmission | Electric Motors, Pumps, Fans |
| Heavy Industry | Rolling Mills, Crushers, Conveyors |
| Automotive Manufacturing | Assembly Line Equipment, Stamping Presses |
| Material Handling | Industrial Robots, Elevators, Hoists |
Stop Production Delays with Genuine SKF NNU4920B/SPW33 Double Row Cylindrical Roller Bearing
OEM manufacturers know the cost of equipment downtime: unplanned stoppages due to bearing failure can erase 30-50% of production targets in a single week. Gray market bearings often lack proper traceability, leading to customs clearance delays and quality disputes that stall your supply chain. When every minute of production counts, unreliable bearing suppliers create a ripple effect of lost revenue and missed deadlines.
Genuine SKF NNU4920B/SPW33 Bearings – In Stock and Ready for Your Production Line
As an official SKF authorized distributor, we deliver the SKF NNU4920B/SPW33 double row cylindrical roller bearing with full traceability documentation, eliminating counterfeit risks. Our centralized warehouse stocks this industrial equipment bearing to ensure batch consistency, critical for maintaining production line stability. Whether your application involves high-speed rotation in CNC spindles or heavy radial loads in gearboxes, this bearing is engineered to meet SKF's global standards for durability and performance.
Engineered for High-Performance Industrial Applications
The SKF NNU4920B/SPW33 double row cylindrical roller bearing excels in applications requiring high radial load capacity and precise axial alignment. Its double row design distributes load evenly across both roller sets, making it ideal for machinery operating under continuous heavy loads such as industrial gearboxes and material handling equipment. The open seal configuration allows for easy lubrication maintenance, ensuring optimal performance in environments where regular servicing is required.
Technical Features That Drive Reliable Performance
The NNU4920B/SPW33 bearing's 100 mm inner diameter is optimized for shafts common in mid-sized industrial equipment, providing a precise fit that minimizes vibration and extends service life. Its cylindrical roller structure offers low friction operation, reducing energy consumption compared to less efficient bearing types. With a single gross weight of 0.250 kg, this bearing balances durability with manageable installation weight, simplifying maintenance procedures. The double row configuration enhances rigidity, critical for maintaining alignment in high-torque applications like conveyor drives and pump assemblies.
Why Genuine SKF Bearings Reduce Total Cost of Ownership
Counterfeit double row roller bearings may offer lower upfront costs, but they typically fail 3-5 times faster than genuine SKF products, leading to repeated replacement cycles and unplanned downtime. A single bearing failure in a production line can cost $10,000-$50,000 in lost output, far exceeding any initial savings. Our ISO 9001-compliant quality management ensures each SKF NNU4920B/SPW33 bearing meets strict performance criteria, reducing long-term maintenance costs and protecting your equipment investment.
Your Trusted Partner for Industrial Bearing Supply
With 60+ countries served and a SKF-certified technical team, we provide more than just products. Our door-to-door global logistics ensures your bearings arrive on schedule, while customized OEM schemes adapt to your production needs. Every order includes comprehensive traceability documentation, from manufacturing batch records to shipping manifests, simplifying compliance for export markets. As a direct authorized distributor, we eliminate multi-tier distribution delays, delivering your NNU4920B/SPW33 bearings 30-50% faster than traditional supply chains.
Packaging & Shipping
- Original SKF packaging with product certification and traceability documents
- Single item packaging: 10×10×10 cm protective box
- bulk packaging: 16.00×16.00×16.00 cm reinforced cartons
- Global door-to-door delivery via DHL, FedEx, UPS, or freight forwarding
- Real-time logistics tracking provided for all shipments
- Minimum order quantity: 1 piece, supporting emergency maintenance needs
Get Your SKF NNU4920B/SPW33 Bearing Shipped Today
Don't let bearing supply issues disrupt your production schedule. Send your order details including quantity and application requirements, and our team will issue a formal quotation with availability confirmation within 24 hours. With our large centralized inventory, most orders ship within 3-7 business days, getting your equipment back online faster.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every SKF NNU4920B/SPW33 bearing comes with complete traceability documentation and brand authorization certificates.
Q: How can I confirm this bearing fits my equipment?
A: Our SKF-certified technical team can verify compatibility. Provide your equipment model or operating parameters (load, speed, temperature) for free选型 assistance.
Q: What is the warranty policy?
A: All bearings come with SKF's standard manufacturer warranty, covering manufacturing defects with unconditional replacement.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, supporting both emergency repairs and small-batch production needs.
Q: How long does shipping take?
A: In-stock bearings ship within 3-7 business days via your choice of DHL, FedEx, UPS, air, or sea freight.
Q: How do I verify bearing authenticity?
A: Each bearing includes SKF's original packaging with security features, laser-etched part numbers, and traceability codes verifiable through official channels.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
Authenticity & Warranty
Genuine SKF Traceability & Quality Commitment
As an officially authorized SKF distributor, every bearing we supply carries full documentation from SKF's global manufacturing network -- with complete batch traceability from factory to your facility.
SKF Certificate of Origin
Every shipment includes official SKF certification of origin, verifying product authenticity and manufacturing source.
Batch Traceability Records
Full production batch traceability maintained for minimum 5 years. Enables quality audit and failure investigation.
SKF Authorized Distributor Status
Verified annually by SKF. Our authorized status can be confirmed directly through the SKF distributor verification system.
Quality Warranty
All products carry SKF manufacturer warranty. Defective products are replaced or refunded -- no questions asked.
Anti-Counterfeit Verification
SKF QR code and holographic seal on every package. Verify authenticity instantly via SKF's official verification portal.
Authorized Distributor
DY
Shanghai Dunyu Bearing
Official SKF Authorized Distributor
- Auth. Since
- 2010+
- Quality Std.
- ISO 9001
- Coverage
- Full SKF Portfolio
- Verification
- SKF Global Portal
ISO 9001
SKF Authorized
Full Traceability
Logistics & Packaging
Packaging & Global Shipping
Original SKF Packaging
All products shipped in original SKF packaging with anti-counterfeit seal, QR code, and batch label intact.
Export Carton + Wooden Crate
Standard export carton for small orders. Custom wooden crates with moisture-proof lining for large/heavy shipments.
Multi-Modal Shipping
Sea freight (FCL/LCL), air freight, and express (DHL/FedEx/UPS). DDP, DAP, CIF, FOB terms all supported.
Delivery Timeline
In-stock items: 1-3 days dispatch. Air freight: 3-7 days door-to-door. Sea freight: 15-35 days by destination.
Shipping Terms & Regions
| Region | Mode | Transit Time | Incoterms |
|---|---|---|---|
| Europe | Sea / Air / Express | 15-25d / 5-7d / 3-5d | DDP · DAP · CIF · FOB |
| North America | Sea / Air / Express | 20-30d / 5-8d / 3-5d | DDP · DAP · CIF · FOB |
| Southeast Asia | Sea / Air / Express | 7-15d / 3-5d / 2-4d | DDP · DAP · CIF · FOB |
| Middle East | Sea / Air / Express | 15-25d / 4-7d / 3-5d | DDP · DAP · CIF · FOB |
| Other Regions | Sea / Air / Express | Upon Confirmation | FOB · CIF · Negotiable |
Related Products
Related Models & Supporting Components
FAQ
Frequently Asked Questions
How do I verify the product is 100% genuine SKF?
Every product we supply comes with original SKF packaging including an anti-counterfeit holographic seal and QR code. You can scan the QR code on the SKF official website to verify authenticity. We also provide the SKF Certificate of Origin with every shipment, and our authorized distributor status can be verified directly through SKF's global distributor portal.
What is the minimum order quantity (MOQ)?
There is no strict minimum order quantity for standard catalog items. We support single-piece sample orders for testing and evaluation. For bulk procurement and long-term supply programs, we offer preferential pricing and dedicated inventory reservation. Contact our sales team for a customized procurement plan.
How long does it take to receive a formal quotation?
We guarantee a formal quotation with full SKF traceability certification within 24 business hours of receiving your inquiry. For urgent requirements, our team can typically respond within 2 hours during business hours (Mon-Sat, 9:00-18:00 GMT+8). Contact us via WhatsApp for fastest response.
Do you support DDP (Delivered Duty Paid) shipping?
Yes, we fully support DDP, DAP, CIF, and FOB incoterms across 60+ countries. Our logistics team handles all export documentation, customs clearance, and last-mile delivery. We work with leading freight forwarders and express carriers (DHL, FedEx, UPS) to ensure reliable and timely delivery.
Can you provide technical support for bearing selection?
Absolutely. Our SKF-certified engineers provide comprehensive technical support including bearing selection, application analysis, failure investigation, and lubrication planning. We can also assist with housing selection, mounting tool recommendations, and condition monitoring solutions. Technical support is available 24/7 via email and WhatsApp.
What are the payment terms?
We accept T/T (bank transfer), L/C (letter of credit) for large orders, and Western Union. Standard terms are 30% deposit with 70% balance before shipment. For established long-term customers with framework agreements, we offer net payment terms. All transactions are conducted in USD or EUR.
What happens if I receive a defective product?
All products carry the full SKF manufacturer warranty. In the unlikely event of a defective product, we will arrange replacement or full refund -- no questions asked. Our quality team will also conduct a failure analysis to identify the root cause and prevent recurrence. Please retain the original packaging and documentation for warranty claims.
Still have questions? Chat with our SKF engineers →
Start Your Procurement
Get a Formal Quote
Within 24 Hours.
Send us your bearing model, quantity, and delivery requirements. Our SKF-certified team will respond with a formal quotation, traceability certificate, and logistics plan.
- 100% Genuine SKF with Certificate of Origin
- Formal quotation within 24 hours
- Sample orders & bulk supply supported
- DDP/DAP/CIF to 60+ countries
- Dedicated SKF-certified account manager
Send Inquiry -- SKF Bearing Specialist Online