Product Specifications
| Parameter |
Details |
| Model NO. |
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 |
| Transport Package |
Carton Pallet |
| HS Code |
8482800000 |
Application Industries
| Industry |
Typical Equipment |
| Construction Machinery |
Excavators, Loaders, Bulldozers |
| Mining |
Crushers, Conveyors, Grinding Mills |
| Steel & Metallurgy |
Rolling Mills, Continuous Casters |
| Machine Tools |
CNC Lathes, Machining Centers, Spindles |
Minimize Downtime with Reliable Double Row Cylindrical Roller Bearing NNU4952 B-K/Sp W33
Industrial machinery operators know the frustration of unexpected downtime—especially when caused by bearing failure. A single hour of production loss in mining or manufacturing can cost thousands, yet many still struggle with sourcing reliable bearings that meet both precision and durability requirements. When equipment like crushers or rolling mills needs replacement parts, waiting weeks for multi-brand orders or dealing with inconsistent quality only compounds the problem.
NNU4952 B-K/Sp W33 Bearing: Engineered for Heavy-Duty Performance
The Double Row Cylindrical Roller Bearing NNU4952 B-K/Sp W33 addresses these challenges directly. As part of our dual-brand portfolio, this bearing combines European precision with American heavy-duty design, making it ideal for high-load industrial machinery. With a separated structure and medium-to-large outer dimensions (120-190mm), it delivers stable performance in applications like gearboxes, machine tool spindles, and conveyor systems. Our large centralized inventory ensures you won’t wait for critical replacements—essential when every minute of downtime impacts your bottom line.
Where This Bearing Performs Best
Designed for axial load handling in non-aligning applications, the NNU4952 B-K/Sp W33 excels in harsh industrial environments. Its robust bearing steel construction (60-64 HRC hardness) withstands heavy shocks and continuous operation, while vibration grades Z1V1 to Z3V3 ensure smooth performance at varying speeds. Whether installed in mining crushers subjected to dust and debris or steel mill rolling equipment under high temperature, this bearing maintains precision and extends service life in demanding conditions.
Technical Details That Define Reliability
Key specifications set this Double Row Cylindrical Roller Bearing apart. The separated design allows for easy mounting and maintenance, crucial for reducing equipment downtime during repairs. Clearance options (C0 to C5) accommodate thermal expansion and load variations, ensuring optimal fit in different operating conditions. Cage materials—brass or steel—provide structural integrity: brass cages offer better heat dissipation for high-speed applications, while steel cages suit heavy-load scenarios. The 60-64 HRC hardness rating ensures resistance to wear, a critical factor in extending bearing life in abrasive industrial settings.
Why Genuine Bearings Matter for Total Cost of Ownership
Choosing genuine industrial machinery bearings over counterfeit alternatives directly impacts your operational costs. Substandard bearings often fail prematurely, leading to unplanned shutdowns, expensive repairs, and potential damage to connected components. In contrast, our NNU4952 Bearing adheres to strict ISO 9001 quality standards, with every unit inspected before shipment. The long-term savings—fewer replacements, reduced maintenance, and uninterrupted production—far outweigh the initial cost difference, making genuine bearings a smarter investment for industrial operations.
Why Global Buyers Choose Our Bearing Solutions
As an official authorized distributor of SKF & Timken, we bring 15+ years of bearing expertise to every order. Our dual-brand authorization ensures authentic, traceable products, backed by a unified ISO 9001 quality inspection system that verifies each bearing’s performance. With a cross-brand technical team on call, we help clients select the right bearings for their specific equipment and工况, reducing the risk of选型错误. Serving 1,200+ clients across 55+ countries, we’ve built a reputation for reliable supply—even for large-scale projects. Our one-stop procurement model lets you mix brands and quantities in a single order, simplifying logistics and cutting supplier management time by up to 40%.
Packaging & Shipping
- Secure carton pallet packaging with protective cushioning to prevent damage during transit
- Standard lead time: 3-7 business days for in-stock items
- Global logistics options: DHL, FedEx, UPS, air freight, or sea freight based on urgency and location
- Real-time tracking provided from warehouse dispatch to delivery
- Minimum order quantity: 1 unit, supporting both emergency repairs and bulk procurement
Get Your NNU4952 Bearing Shipped Today
Don’t let equipment downtime eat into your profits. Whether you need a single NNU4952 B-K/Sp W33 for emergency maintenance or a bulk order for scheduled upgrades, we have the inventory and expertise to meet your needs. Send us your bearing designation, application details, and quantity, and our team will provide a quote within 24 hours—so you can get back to full production faster.
Frequently Asked Questions
Q: Are these bearings genuine and traceable?
A: Yes. As an official authorized distributor of leading brands, every bearing we supply is fully traceable to the original manufacturer, with complete authorization documentation available upon request.
Q: How can I confirm if the NNU4952 B-K/Sp W33 is compatible with my equipment?
A: Provide your equipment model, operating speed, load requirements, and environmental conditions. Our cross-brand technical team will verify compatibility and recommend the optimal bearing solution at no cost.
Q: What is your warranty policy for this bearing?
A: We stand by the manufacturer’s warranty, covering manufacturing defects. If a bearing fails due to material or production issues, we offer a full replacement or refund per the warranty terms.
Q: What is the minimum order quantity for the NNU4952 Bearing?
A: We accept orders starting from 1 unit, making it easy to source emergency replacement parts or small quantities for maintenance.
Q: How long does shipping take to [my country]?
A: Standard delivery takes 3-7 business days for in-stock items via express courier (DHL/FedEx/UPS). For bulk orders, sea freight options are available with transit times based on destination port.
Q: How can I verify the authenticity of the bearing upon receipt?
A: Each bearing comes with original packaging, serial numbers, and manufacturer certification. You can cross-check serial numbers via the brand’s official website or
