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 |
| Specification |
As Your Request |
| Trademark |
zhaoyun |
| Origin |
Jiangsu China |
| HS Code |
8482800000 |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Reducers, Printing Machines |
| Automotive |
Transmission Systems, Axle Assemblies |
| Agricultural Machinery |
Tractors, Harvesters, Heavy-Duty Farming Equipment |
| New Energy |
Wind Turbines, Solar Equipment Drives |
| Engineering |
Excavators, Construction Machinery |
Prevent Costly Downtime with NNU4944 B/Sp Double Row Cylindrical Roller Bearing
Industrial machinery operators know the frustration of unexpected bearing failures—downtime that halts production lines, increases maintenance costs, and erodes profits. When low-precision or counterfeit bearings fail prematurely in critical equipment like gearboxes or printing presses, the impact ripples through your entire operation. Sourcing reliable, high-precision bearings that meet your exact specifications shouldn’t add to the stress.
Engineered for High-Precision Industrial Performance
The Double Row Cylindrical Roller Bearing NNU4944 B/Sp is designed to address these challenges head-on. With precision grades from P0 to P4 and noise grades Z2/Z3/Z4, this bearing delivers stable performance in demanding industrial environments. Our one-stop service covers everything from custom clearance adjustments (C3 as standard, with C0/C2/C4/C5 options) to tailored cage materials (brass or steel), ensuring seamless integration with your machinery. Whether for CNC machine spindles or heavy-duty reducers, this bearing meets the rigorous standards of industrial equipment manufacturers.
Optimized for Heavy Loads and Continuous Operation
This Double Row Cylindrical Roller Bearing excels in applications requiring high radial load capacity and precise axial alignment. Its separated design allows for easy mounting and dismounting, simplifying maintenance in tight spaces. With a hardness of 60-64 HRC, the bearing withstands the wear and tear of continuous operation, making it ideal for industrial machinery operating under heavy loads and variable speeds. Choosing the right bearing directly impacts equipment lifespan and operational efficiency—compromising on quality here leads to frequent replacements and unplanned downtime.
Key Technical Features That Drive Reliability
The NNU4944 B/Sp bearing’s performance is defined by critical technical attributes. Its C3 clearance ensures optimal internal play, reducing heat generation during high-speed rotation and accommodating thermal expansion in large machinery. The brass or steel cage maintains uniform roller spacing, minimizing vibration (Z2V2/Z3V3 grades available) and extending service life. The bearing’s medium and large outer dimension (120-190mm) balances load capacity with compact design, fitting seamlessly into industrial gearboxes and transmission systems. Each parameter is engineered to work in harmony, delivering the precision and durability required for modern industrial applications.
Why Authenticity Matters for Your Bottom Line
Counterfeit bearings may offer lower upfront costs, but they come with hidden risks: inconsistent material quality, imprecise machining, and lack of quality control. These issues lead to early failure, costing far more in replacement parts, labor, and production losses than the initial savings. Our bearings meet ISO, ABMA, and DIN international standards, with strict incoming material inspections and full-process production supervision. By choosing genuine High Precision Roller Bearings, you avoid the hidden costs of counterfeits and ensure long-term reliability in your equipment.
Our Commitment to Your Success
With over 18 years of manufacturing and export experience, Jinan Saifan Bearing Co., Ltd stands behind every product. We hold ISO 9001:2015 and ISO 14001 certifications, ensuring consistent quality across our production processes. Our professional R&D team works closely with clients to customize bearings to specific drawings and requirements, while our QC staff conducts dimensional, noise, and service life tests in our in-house laboratory. We serve clients in Europe, North America, Southeast Asia, and the Middle East, offering flexible order policies—including 1 piece MOQ for standard bearings and 3-5 day delivery for samples—to support your operational needs.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Multiple logistics options available, including express, air, and sea freight
- Real-time tracking provided for all shipments
- 1 piece MOQ for standard bearings, with customized order quantities negotiable
Get the Right Bearing for Your Machinery Today
Don’t let bearing issues slow down your production. Whether you need a single replacement or bulk order, we’re ready to deliver the NNU4944 B/Sp Double Row Cylindrical Roller Bearing you need. Send us your application details, and our technical team will ensure the bearing matches your equipment requirements—helping you minimize downtime and maximize efficiency.
Frequently Asked Questions
Q: Is this bearing a genuine product?
A: Yes, all our bearings are manufactured in our own facility with strict quality control, meeting ISO international standards. We provide full traceability for every product.
Q: How can I confirm if this bearing fits my equipment?
A: Provide your equipment model, required dimensions, load, and speed parameters. Our technical team will verify compatibility and recommend the optimal specifications.
Q: What is the warranty policy?
A: We offer a 12-month warranty from the date of delivery. Defective products will be replaced free of charge or refunded, subject to quality inspection.
Q: What is the minimum order quantity?
A: For standard bearings, the MOQ is 1 piece. Customized orders have negotiable quantities based on specifications.
Q: How long does shipping take?
A: Sample orders ship within 3-5 working days; bulk orders within 5-15 working days. Logistics time depends on the chosen shipping method.
Q: Can I request custom clearance or cage materials?
A: Yes, we support OEM/ODM customization
Tags:
C3 Clearance Cylindrical Bearing
Double Row Cylindrical Roller Bearing
Double Row NNU4944 B/Sp Bearing
High Precision Roller Bearing
Industrial Machinery Bearing
Industrial Machinery High Precision Roller Bearing
NNU4944 Bearing
W33 Cylindrical Roller Bearing
