Description
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | NNU4952 B-K/Sp W33 |
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage | Brass, Steel |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| HS Code | 8482800000 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Heavy-Duty Machinery | Industrial gearboxes, rolling mill stands, large-scale compressors |
| Steel Mills | Continuous casting machines, hot rolling equipment |
| Mining Equipment | Crusher main shafts, conveyor drives |
Struggling with Bearing Failures in Heavy Machinery? The NNU4952 Double Row Cylindrical Roller Bearing Delivers Reliability
Finding a bearing that can handle the extreme loads and continuous operation of heavy-duty machinery is challenging. Many operations face unexpected downtime due to premature bearing wear, misalignment issues, or difficulty sourcing exact replacements. When critical equipment fails, the cost of replacement parts and lost productivity adds up quickly.
Engineered for Heavy-Duty Performance You Can Trust
The Double Row Cylindrical Roller Bearing NNU4952 B-K/Sp W33 is designed to solve these challenges. With a brass cage and separated inner/outer rings, it provides exceptional radial load capacity and axial rigidity—essential for heavy machinery applications like steel mills and mining equipment. Our ISO 9001 certified production process ensures consistent quality, while our extensive inventory means we can often ship same-day for urgent requirements.
Optimal Performance in Demanding Conditions
This bearing thrives in high-load, low-speed applications where precision and durability are non-negotiable. Operating temperatures up to 120°C (with proper lubrication) and vibration levels rated at Z1V1 to Z3V3 make it suitable for harsh industrial environments. The W33 lubrication groove and holes facilitate easy maintenance, reducing the risk of lubrication-related failures in hard-to-reach machinery components.
Key Engineering Features That Maximize Service Life
The 60-64 HRC hardness of the bearing steel ensures resistance to deformation under heavy loads, while the double row design distributes stress evenly across the rollers. The separable design allows for easy installation and replacement, even in confined spaces—a critical advantage during maintenance shutdowns. Clearance options from C0 to C5 provide flexibility to match specific operating conditions, from tight tolerance precision applications to those requiring thermal expansion allowance.
Why Choosing the Right Bearing Lowers Total Cost of Ownership
Investing in a high-quality Heavy-Duty Machinery Bearing like the NNU4952 reduces long-term costs significantly. Inferior bearings may have lower upfront prices but often fail prematurely, leading to unplanned downtime, replacement parts expenses, and labor costs. This bearing’s robust construction and material quality align with ISO 281 fatigue life standards, ensuring predictable performance and extended service intervals—ultimately lowering your total cost of ownership.
Quality You Can Rely On
Our production and检验流程 are ISO 9001 certified, with rigorous testing of raw materials and finished products for dimensional accuracy, hardness, and surface quality. Every bearing comes with a manufacturer’s warranty covering material and manufacturing defects. We maintain a comprehensive inventory of bearings across multiple brands and specifications, allowing us to fulfill orders of any size—from small replacement quantities to large OEM requirements—with fast turnaround times.
Packaging & Shipping
- Standard packaging: Carton and pallet for secure transportation
- Same-day shipping available for in-stock items
- Flexible delivery options: Express courier, air freight, or sea freight
- Low minimum order quantity supported for small-scale maintenance needs
Get Your NNU4952 Bearing Quote Today
Whether you need a single replacement bearing or a bulk order for your production line, we can provide competitive pricing and reliable delivery. Simply share the bearing model, required quantity, and delivery location, and our team will prepare a detailed quote with lead time information. The sooner you confirm your order, the faster we can arrange shipment to keep your machinery running.
Frequently Asked Questions
Q: Do you supply bearings from other brands or only specific models?
A: We support procurement of bearings across all major international and domestic brands. Simply provide the brand, model, or dimensional specifications, and we can source the exact product you need.
Q: How can I ensure this NNU4952 bearing fits my equipment?
A: Provide your equipment model or the bearing dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the NNU4952 B-K/Sp W33 specifications.
Q: What is your warranty policy for bearings?
A: We offer a standard warranty covering manufacturing defects. The warranty period and terms are specified in each order confirmation, with replacement or refund available for verified quality issues.
Q: What is the minimum order quantity for this bearing?
A: We accept low minimum order quantities, including single-unit purchases, to support maintenance and repair needs. Larger volume discounts are available for bulk orders.
Q: How long does shipping take to my location?
A: In-stock bearings ship the same day. Delivery times depend on location: 3-5 days for express courier, 7-10 days for air freight, and 30-45 days for sea freight.
Q: Can you provide custom bearing solutions if this model doesn’t meet my needs?
A: Yes, we support OEM/ODM customization. Provide your technical drawings or specific requirements, and our engineering team will develop a tailored solution.
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.
