Product Specifications
| Parameter |
Details |
| Model NO. |
NNU4960B/SPW33 |
| Type |
Roller |
| Selling Units |
Single Item |
| Single Gross Weight |
0.250 Kg |
| Inner Diameter |
300 mm |
| Number of Row |
Double Row |
| Structure |
Cylindrical |
| Seals Type |
Open |
| Trademark |
SKF |
| Origin |
China |
Application Industries
| Industry |
Typical Equipment |
| Heavy Machinery |
Excavators, Construction Cranes, Mining Equipment |
| Industrial Manufacturing |
Rolling Mills, Gearboxes, Large-Scale Compressors |
| Engineering |
Material Handling Systems, Heavy-Duty Conveyors |
Minimize Downtime with Genuine NNU 4960 B/Spw33 SKF Cylindrical Roller Bearing
Equipment failures in heavy machinery operations often trace back to substandard bearings—costing thousands in lost production and emergency repairs. Sourcing authentic double row roller bearings with precise specifications can be challenging, especially when facing minimum order requirements or lengthy delivery times. For operations relying on 300mm inner diameter bearings, even small dimensional deviations can lead to premature wear and catastrophic breakdowns.
Genuine SKF Performance, Delivered When You Need It
The NNU 4960 B/Spw33 SKF cylindrical roller bearing addresses these challenges with factory-direct authenticity and flexible supply. As a professional bearing supplier with decades of export experience, we maintain direct access to genuine SKF inventory, ensuring each unit meets the brand’s rigorous quality standards. This high-performance cylindrical roller bearing, designed for heavy machinery applications, arrives with full traceability—eliminating the risks of counterfeit products that plague the industrial parts market.
Engineered for Heavy-Duty Operating Conditions
This double row roller bearing excels in environments with high radial loads and moderate axial loads, common in heavy machinery like excavators and rolling mills. Its open design allows for optimal lubrication customization, critical for operations in dusty or high-temperature settings. The 300mm inner diameter and robust cylindrical structure provide exceptional rigidity, ensuring stable performance even under fluctuating load conditions—key for maintaining equipment accuracy and extending service intervals.
Technical Features That Maximize Reliability
The NNU 4960 B/Spw33’s double row configuration distributes load evenly across contact surfaces, significantly enhancing fatigue resistance compared to single row alternatives. Its precision machining (adhering to SKF’s strict tolerance standards) minimizes vibration, reducing noise and improving energy efficiency in high-speed applications. The bearing’s lightweight 0.250 Kg design, despite its large inner diameter, helps reduce overall equipment weight without compromising load capacity—a critical factor in mobile machinery performance.
Why Authenticity Matters for Total Cost of Ownership
Counterfeit bearings may offer lower upfront costs, but they often fail within 30-50% of genuine SKF service life. This leads to frequent replacements, unplanned downtime, and potential damage to mating components—driving total costs up by 2-3 times. Our genuine NNU 4960 B/Spw33 SKF bearing for heavy machinery comes with the manufacturer’s assurance of material quality and performance, backed by ISO 9001:2015 certified quality control processes that verify every unit before shipment.
Your Trusted Partner for Bearing Solutions
With 18 years in the industry, we’ve served brand owners, distributors, and industrial buyers across Europe, North America, and Southeast Asia. Our technical team provides free guidance on bearing selection and installation, ensuring optimal适配 for your specific machinery. We support flexible orders—with 1 piece MOQ for standard bearings—and efficient delivery (3-5 working days for samples, 5-15 for bulk orders). Every purchase includes a 12-month warranty, with free replacements for qualified defective products.
Packaging & Shipping
- Secure factory packaging with SKF branding and product identification
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Multiple logistics options: DHL, FedEx, UPS, air freight, and sea freight available
- Real-time tracking provided for all shipments
- 1 piece minimum order quantity supported for emergency maintenance needs
Get Your NNU 4960 B/Spw33 Bearing Today
Don’t let equipment downtime impact your productivity. Whether you need a single replacement bearing or bulk inventory, our team ensures fast, reliable delivery of genuine SKF products. Send us your requirements now to secure competitive pricing and expert support.
Frequently Asked Questions
Q: Is this a genuine SKF bearing?
A: Yes, we are an authorized supplier of genuine SKF bearings. Each unit comes with full traceability documentation to verify authenticity.
Q: How can I confirm this bearing fits my equipment?
A: Provide your machinery model or technical drawings, and our engineering team will verify compatibility at no cost.
Q: What warranty coverage is included?
A: All SKF bearings come with a 12-month warranty from the delivery date, covering manufacturing defects with free replacements.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, ideal for emergency repairs or small-scale requirements.
Q: How long does shipping take?
A: Sample orders ship in 3-5 working days; bulk orders take 5-15 working days depending on quantity and destination.
Q: How do I verify the bearing’s authenticity?
A: Genuine SKF bearings feature laser-etched markings, holographic packaging, and unique serial numbers verifiable through SKF’s official channels.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
