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 List| Parameter | Details |
|---|---|
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical Type | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated Design | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage Material | Brass, Steel |
| Vibration Level | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| HS Code | 8482800000 |
| Industry | Typical Applications |
|---|---|
| Heavy Duty Industrial Machinery | Industrial equipment requiring high axial load capacity and precision rotation |
Finding the right double row cylindrical roller bearing for heavy duty machinery can be challenging. Many buyers face issues with incorrect load capacity ratings, poor material quality leading to premature wear, or long lead times for specialized models. When your equipment depends on reliable bearings, these problems can cause costly downtime and maintenance delays.
The NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing with Brass Cage is engineered to address these challenges. As a supplier with access to a comprehensive range of bearing types and brands, we ensure this bearing meets industrial standards for heavy duty applications. Its separated design allows for easy installation and maintenance, while the brass cage provides durability in demanding operating conditions.
This bearing excels in industrial machinery where high axial loads and moderate radial loads are present. With a hardness rating of 60-64 HRC, it offers excellent wear resistance, making it suitable for continuous operation in steel mills, mining equipment, and construction machinery. The non-aligning design ensures stable performance where shaft misalignment is minimal, maintaining precision even under heavy loads.
The bearing's separated structure allows for quick disassembly during maintenance, reducing downtime compared to non-separable designs. The brass cage provides superior heat dissipation and rigidity, critical for high-speed applications where steel cages might deform under stress. Available clearance options (C0 to C5) allow customization based on operating temperature and load conditions—tighter clearances for precision machinery, larger clearances for thermal expansion in high-temperature environments. The 120-190mm outer dimension range positions this bearing as a medium-to-large solution for heavy duty industrial needs.
Choosing the right double row cylindrical roller bearing directly impacts your equipment's total cost of ownership. A bearing with insufficient load capacity or improper clearance can lead to early failure, requiring emergency replacements and unplanned downtime. This NNU4921 B/Sp W33 model, with its robust bearing steel construction and precision manufacturing, reduces the risk of premature wear. By matching the bearing's specifications to your application requirements, you avoid the hidden costs of frequent replacements and maintain consistent equipment performance.
Our bearings undergo rigorous quality control processes, including material inspection and dimensional accuracy checks, to ensure they meet industry standards. We maintain a wide inventory of standard and specialized bearings, supporting same-day shipping for in-stock items. With the ability to source from multiple reputable manufacturers, we provide flexibility in meeting your specific brand or certification requirements. Each bearing comes with basic quality documentation, and we offer warranty coverage for manufacturing defects.
Whether you need this specific NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing or other industrial bearings, we can provide competitive pricing and availability. Contact us with your required quantity, delivery location, and any special packaging needs, and our team will respond promptly with a detailed quote.
Q: Do you supply bearings from other brands or models?
A: Yes, we offer a full range of bearing types and can source from various international and domestic brands according to your specifications.
Q: How can I confirm if this bearing fits my equipment?
A: Provide your equipment model or existing bearing dimensions (inner diameter, outer diameter, width), and our technical team will verify compatibility.
Q: What warranty do you offer on bearings?
A: We provide a standard warranty against manufacturing defects. Specific terms and duration are outlined in each order confirmation.
Q: What is the minimum order quantity for this bearing?
A: We accept low minimum order quantities, including single-unit purchases for emergency replacements.
Q: How long does shipping take to my location?
A: In-stock items ship the same day. Delivery time depends on your location and chosen shipping method, typically 3-15 business days.
Q: Can you provide custom bearing solutions?
A: Yes, we support OEM/ODM services for custom bearing specifications based on drawings or sample requirements.
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 Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 for Heavy Duty Industrial Machinery with Brass Cage and can be quoted on the same inquiry.
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04 Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 for Heavy Duty Industrial Machinery with Brass Cage 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 Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 for Heavy Duty Industrial Machinery with Brass Cage.
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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.
