Authorized SKF Distributor Ball, roller, needle, thrust and mounted bearings for industrial buyers worldwide
Buying for several machines? Add this model to one inquiry with the other SKF bearings, housings and accessories on your list. Each line keeps its own designation, quantity and specification.
Send Your Full ListThe table below lists the designation, category and recorded dimensions for NNU4956B/SPW33 Double Row Cylindrical Roller Bearing 280mm ID for Precision Machinery. Confirm these values against your equipment record before ordering.
| Category | Cylindrical Roller Bearing |
|---|
| 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 | 0.250kg Batch |
| Trademark | SKF |
| Origin | China |
| Industry | Typical Applications |
|---|---|
| Precision Machinery | High-precision rotating equipment, machine tool spindles, industrial automation systems |
When sourcing bearings for precision machinery, engineers often face challenges like mismatched dimensions causing installation delays, or substandard components leading to unexpected downtime. Finding a supplier that can consistently deliver authentic, high-precision bearings with the right specifications is critical for maintaining production efficiency.
The NNU4956B/SPW33 double row cylindrical roller bearing addresses these challenges with its precise engineering and compatibility with SKF standards. As a supplier with access to a comprehensive range of bearing types, including cylindrical roller bearings, we ensure that this 280mm ID bearing meets the dimensional requirements of precision machinery applications. Our ISO 9001 certified quality control processes verify key parameters like inner diameter tolerance and structural integrity, supporting reliable performance in critical equipment.
This double row cylindrical roller bearing excels in applications requiring high radial load capacity and precise axial alignment. With an open seal design, it performs best in controlled environments where lubrication can be regularly maintained, such as in machine tool spindles or precision gearboxes. The 280mm inner diameter makes it suitable for large shaft applications in industrial machinery, where maintaining dimensional accuracy under load is essential for operational stability.
The double row configuration of the NNU4956B/SPW33 bearing provides increased radial load handling capability compared to single row designs, making it ideal for heavy-duty precision machinery. Its cylindrical structure ensures consistent load distribution across the rollers, reducing stress concentrations and extending service life. The open seal type allows for easy lubrication maintenance, which is crucial for preventing premature wear in high-speed rotating applications. Additionally, the bearing's adherence to SKF dimensional standards ensures interchangeability with existing components, simplifying replacement and reducing inventory complexity.
Choosing the correct bearing, such as this SKF cylindrical roller bearing, directly impacts total operational costs. A precision-machined 280mm ID bearing minimizes vibration and noise, reducing wear on adjacent components and lowering maintenance requirements. In contrast, using undersized or low-quality bearings can lead to frequent replacements, unplanned downtime, and increased energy consumption. By following industry standards for bearing selection and relying on verified specifications, businesses can optimize equipment reliability and extend service intervals, ultimately reducing long-term costs.
Our commitment to quality is demonstrated through ISO 9001 certified production and inspection processes. Each NNU4956B/SPW33 bearing undergoes dimensional checks, including inner diameter verification, to ensure compliance with specifications. Raw materials and finished products are tested for hardness and surface integrity, providing assurance of consistent performance. We offer a warranty against manufacturing defects, with clear documentation to support product traceability. With access to a wide range of brands and models, we can source bearings according to specific customer requirements, ensuring compatibility with existing systems.
To proceed with your order or request pricing, please provide the bearing model, required quantity, and delivery destination. Our team can also assist with verifying compatibility with your equipment based on dimensional specifications. Early confirmation allows us to prioritize your order and ensure timely delivery.
Q: Do you support procurement of other bearing brands or models?
A: Yes, we provide sourcing services for a comprehensive range of bearing brands and models, and can supply according to customer-specified standards.
Q: How can I confirm if this bearing fits my equipment?
A: Please provide your equipment's required bearing dimensions (inner diameter, outer diameter, width) or model number, and our technical team will assist with compatibility verification.
Q: What is your warranty policy?
A: We offer a warranty against manufacturing defects. Specific warranty terms are subject to agreement in the sales contract.
Q: What is the minimum order quantity?
A: We support low minimum order quantities, including small-batch trial orders.
Q: What are the shipping time and logistics options?
A: In-stock items are shipped promptly. We offer flexible logistics choices including express delivery, air freight, and sea freight based on your needs.
Q: Do you provide OEM/ODM customization services?
A: Yes, we support customization according to customer-provided drawings or specifications.
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.
Electrical Equipment is an Authorized SKF Distributor that turns mixed equipment lists into itemised, comparable quotes and consolidated supply for industrial plants, maintenance contractors and distributors worldwide.
Ball, roller, needle, thrust, mounted and precision bearings handled in a single industrial order.
One inquiry covers parts for different machines, with designations and internal stock codes matched line by line.
Routine replacement bearings and special-specification models are labelled separately on your quote.
Identification gaps are closed before quoting; any alternative is listed separately for your approval.
These SKF models share the category of NNU4956B/SPW33 Double Row Cylindrical Roller Bearing 280mm ID for Precision Machinery and can be quoted on the same inquiry.
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04 NNU4956B/SPW33 Double Row Cylindrical Roller Bearing 280mm ID for Precision Machinery is specified in the applications below. Open an application to see the matching SKF bearing categories.
Industrial buyers in the USA, Mexico, Oman, France, New Zealand and Brazil source genuine SKF bearings and mixed lists through Electrical Equipment.
"When a critical piece of rotating equipment failed, we needed a mixed SKF list urgently. The supplier consolidated the order, shipped same-day, and the parts were on our plant floor in two days. The equipment was back online before the end of the shift."
Ahmed Al-FarsiFarsi Industrial Services · Oman "We had a bad experience with counterfeit SKF bearings from another supplier. The bearings from skfus.com are genuine, traceable, and the packaging matches SKF's current format. Our reliability team verified the first batch and we now use them as our primary source."
Luis HernandezHernandez Manufacturing · Mexico "The SKF mounted units and insert bearings we ordered for a conveyor upgrade were supplied with the correct housing and locking arrangement. Our maintenance team installed them without modification. No noise, no leaks, no call-backs."
Graham McLeodMcLeod Fabrication · New Zealand These guides cover selection, identification and replacement points relevant to NNU4956B/SPW33 Double Row Cylindrical Roller Bearing 280mm ID for Precision Machinery.
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Read the guideShort answers on identification, mixed orders, quote terms and substitutions at Electrical Equipment.
Send a clear photo of the bearing markings and note which details still need confirming. We close identification gaps, including the exact specification and complete assembly, before you accept a quote. Nothing is substituted to fill a gap.
Yes. Standard, precision and mounted units can sit in one itemised inquiry, with each line keeping its own designation, quantity and specification. Housings and mounting accessories are added when they are part of your supply scope.
Each quote lists the designation, quantity, price and currency, stock availability, estimated lead time and quote validity. Applicable freight or tax terms are stated, and the product documents available for your order are confirmed.
Only with your approval. Any alternative is marked separately on the quote, and every technical change needs sign-off from the buyer before an order is placed.
Send this model alone or with your full SKF list. We verify the identification details on every line first, then issue an itemised written quote with lead time and validity.
