Product Specifications
| Parameter |
Details |
| Model NO. |
NNU4956B/SPW33 |
| Type |
Roller |
| Number of Row |
Double Row |
| Inner Diameter |
280 mm |
| Selling Units |
Single Item |
| Structure |
Cylindrical |
| Seals Type |
Open |
| Gross Weight Per |
0.250 kg Batch |
| Trademark |
SKF |
| Origin |
China |
Application Industries
| Industry |
Typical Equipment |
| Construction Machinery |
Excavators, Loaders, Bulldozers, Concrete Mixers |
| Mining |
Crushers, Conveyors, Drilling Rigs |
| Steel |
Rolling Mills, Continuous Casters |
| Industrial Machinery |
Large Gearboxes, Heavy-Duty Motors |
Stop Equipment Downtime with Genuine SKF NNU4956B/SPW33 Bearings
Construction and mining operations lose thousands in revenue daily when equipment grinds to a halt. A common culprit? Substandard bearings that fail prematurely under heavy loads, costing more in repairs and downtime than the initial savings. Sourcing the right double row cylindrical roller bearing often means coordinating with multiple suppliers, each with different lead times and quality standards—delaying critical maintenance even further.
Genuine SKF NNU4956B/SPW33 Bearings, In Stock and Ready to Ship
As an official SKF distributor, we stock the NNU4956B/SPW33 cylindrical roller bearing to eliminate these frustrations. This double row bearing, designed for 280mm inner diameter applications, delivers the precision engineering needed for construction machinery under high radial loads. Our ISO 9001 quality inspection ensures every unit meets SKF’s strict standards, while our centralized inventory means we can fulfill orders quickly—no more waiting for cross-brand procurement delays.
Engineered for Heavy-Duty Construction Machinery Performance
The NNU4956B/SPW33 thrives in the toughest conditions. Its double row cylindrical roller design handles extreme radial loads, making it ideal for construction machinery like excavator swing mechanisms and loader axles. The open structure allows for lubrication flexibility, critical in dusty job sites where contamination can shorten bearing life. When your equipment operates in continuous duty cycles, this bearing’s robust construction ensures reliable performance without unexpected failures.
Technical Details That Maximize Equipment Uptime
Every feature of the NNU4956B/SPW33 is engineered for durability. The double row configuration distributes load evenly across the bearing, reducing stress on individual rollers and extending service life. With an inner diameter of 280mm, it fits large shafts common in heavy machinery, while the cylindrical structure allows for thermal expansion—vital in high-temperature environments like steel mills. The open design simplifies maintenance, letting technicians inspect and relubricate without removing the bearing, minimizing downtime during service checks.
Why Genuine SKF Bearings Lower Your Total Cost of Ownership
Counterfeit bearings may seem cheaper upfront, but they cost far more in the long run. A single failure can damage expensive equipment components, require emergency repairs, and halt production for days. Genuine SKF bearings like the NNU4956B/SPW33 undergo rigorous testing to ensure they meet load and speed specifications, reducing the risk of premature failure. Our clients in Australia, Russia, and Saudi Arabia report 30% fewer bearing-related breakdowns after switching to authorized suppliers—saving on maintenance costs and lost revenue.
Why 1,200+ Clients Trust Our Bearing Solutions
As an official SKF distributor, we provide complete traceability for every NNU4956B/SPW33 bearing, with documentation linking each unit to SKF’s manufacturing process. Our ISO 9001 quality system includes incoming inspections and pre-shipment checks, ensuring you receive defect-free products. With 55+ countries served and a cross-brand technical team, we offer more than just bearings—we provide application support to ensure you select the right component for your equipment. Our large centralized inventory means most orders ship within 3-7 business days, critical for emergency maintenance.
Packaging & Shipping
- Original SKF packaging with product certification and batch traceability
- Reinforced outer carton to prevent damage during transit
- Global shipping via DHL, FedEx, or UPS with tracking provided
- Expedited delivery options available for urgent repair needs
- Minimum order quantity: 1 piece, ideal for both maintenance and small-scale projects
Get Your NNU4956B/SPW33 Bearing Shipped Today
Your construction or mining project can’t afford unnecessary delays. Whether you need a single NNU4956B/SPW33 for emergency repair or a bulk order for planned maintenance, we have the inventory and expertise to deliver. Send us your requirements, and our team will provide a quote within 24 hours—so you can get back to work with confidence.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every NNU4956B/SPW33 bearing comes with full traceability documentation and SKF’s original packaging.
Q: How do I confirm this bearing fits my equipment?
A: Provide your equipment model or shaft dimensions, and our technical team will verify compatibility with the NNU4956B/SPW33 specifications.
Q: What is the warranty policy?
A: We honor SKF’s原厂质保标准, covering manufacturing defects with unconditional replacement or refund.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, supporting both emergency repairs and small-scale requirements.
Q: How long does shipping take?
A: In-stock bearings ship within 3-7 business days via DHL, FedEx, or UPS, with tracking provided upon dispatch.
Q: How can I verify the bearing’s authenticity?
A: Each bearing includes SKF’s packaging with security features, laser-etched part numbers, and batch codes verifiable through SKF’s official channels. We also provide a certificate of authenticity with every order.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
