Product Specifications
| Parameter |
Details |
| Model Designation |
NN3030 K/SP W33 |
| Bearing Type |
Double Row Cylindrical Roller Bearing |
| Outer Dimension Range |
Medium and Large (120-190mm) |
| Material |
Bearing Steel |
| Alignment Feature |
Non-Aligning Bearings |
| Load Direction |
Axial Bearing |
| Separability |
Separated |
| Internal Clearance |
C0, C2, C3, C4, C5 |
| Cage Material |
Brass, Steel |
| Vibration Grade |
Z1V1, Z2V2, Z3V3 |
| Hardness |
60-64 HRC |
| HS Code |
8482800000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Reducers, Printing Machines |
| Manufacturing |
CNC Machines, Spindles, Conveyors, Compressors |
| Heavy Industry |
Rolling Mills, Crushers, Industrial Motors |
Minimize Downtime with High Precision NN3030 K/SP W33 Double Row Cylindrical Roller Bearing
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failures. A single seized bearing in critical equipment like a gearbox or spindle can halt production lines, leading to missed deadlines and revenue loss. Sourcing reliable high-precision bearings often means navigating minimum order quantities that exceed immediate needs, or waiting weeks for custom specifications. For manufacturers working with tight tolerances, even minor deviations in bearing quality can compromise product accuracy and equipment lifespan.
Engineered for Industrial Machinery Reliability
The NN3030 K/SP W33 Double Row Cylindrical Roller Bearing addresses these challenges with precision-engineered design optimized for industrial machinery. As a professional bearing manufacturer with decades of export experience, we produce this bearing to P4 precision grade standards, ensuring consistent performance in demanding applications like machine tool spindles and heavy-duty gearboxes. The separated inner and outer rings allow for easy installation and maintenance, while the W33 lubrication groove and holes simplify relubrication—critical for extending service life in continuous-operation equipment.
Performance in Heavy-Duty Operating Conditions
This double row cylindrical roller bearing excels in applications requiring high radial load capacity and precise axial guidance. With a hardness rating of 60-64 HRC, it withstands heavy shock loads and continuous stress in industrial environments. The Z2V2 to Z3V3 vibration grades ensure smooth operation at varying speeds, making it suitable for both high-speed spindles and slow-moving heavy machinery. Whether used in metalworking equipment, printing presses, or conveyor systems, proper bearing selection directly impacts equipment uptime and maintenance costs.
Technical Features That Drive Performance
The NN3030 K/SP W33 incorporates critical design elements that enhance industrial machinery performance. Its cylindrical roller design distributes radial loads evenly across the raceways, increasing load capacity compared to ball bearings of similar size. The SP precision grade ensures minimal runout, essential for maintaining accuracy in CNC machining applications. Available clearance grades (C0 to C5) allow customization for thermal expansion conditions—C3 clearance is commonly specified for high-temperature environments like foundry equipment, while C2 suits precision applications requiring tight shaft fit. The brass or steel cage options provide durability; brass cages offer superior strength for heavy loads, while steel cages excel in high-temperature settings.
Total Cost of Ownership: Beyond Initial Price
Choosing a quality Double Row Cylindrical Roller Bearing like the NN3030 K/SP W33 delivers long-term value that outweighs cheaper alternatives. Inferior bearings often fail prematurely due to substandard materials and manufacturing processes, leading to unplanned maintenance, production delays, and potential damage to mating components. Our bearings meet ISO international standards and undergo rigorous testing, including dimensional inspection and vibration analysis, ensuring reliable performance. The 12-month warranty provides additional protection, while our technical team offers guidance on proper installation and maintenance—factors that collectively reduce total ownership costs by extending bearing life and minimizing downtime.
Why Industrial Buyers Choose Saifan Bearings
With over 18 years of bearing manufacturing experience, we serve industrial buyers across Europe, North America, and Southeast Asia. Our production facility features automated lines and professional testing equipment, capable of producing bearings from P0 to P4 precision grades. We support flexible order quantities, including 1 piece MOQ for standard bearings, making us ideal for both emergency repairs and scheduled maintenance. Our ISO 9001:2015 quality management system ensures consistent production standards, while the ISO 14001 certification reflects our commitment to environmental responsibility. Technical support extends beyond sales—our team provides free guidance on bearing selection, installation, and lubrication to optimize performance for specific industrial applications.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- Sample orders delivered within 3-5 working days
- Bulk orders shipped within 5-15 working days after payment confirmation
- Multiple logistics options including express, air, and sea freight
- 1 piece minimum order quantity for standard bearings
Get Your NN3030 K/SP W33 Bearing Today
Don’t let equipment downtime affect your production schedule. Whether you need a single replacement bearing or a bulk order for scheduled maintenance, we can fulfill your requirements quickly. Provide your equipment details and quantity needs, and our team will confirm specifications and deliver a quote within 24 hours. Fast delivery means less time waiting and more time keeping your machinery operational.
Frequently Asked Questions
Q: Is this bearing manufactured to international standards?
A: Yes, all our bearings meet ISO, ABMA, and DIN international industrial standards, with precision grades from P0 to P4 available.
Q: How can I confirm if the NN3030 K/SP W33 is suitable for my equipment?
A: Our technical team can assist with选型 based on your equipment model, load requirements, and operating conditions. Provide details about your application for personalized recommendations.
Q: What warranty coverage do you offer?
A: We provide a 12-month warranty from the date of delivery, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity?
A: Standard bearings like the NN3030 K/SP W33 have a 1 piece MOQ, supporting both emergency repairs and small-batch orders.
Q: How long does shipping take?
A: Sample orders ship within 3-5 working days, while bulk orders typically deliver within 5-15 working days, depending on quantity and destination.
Q: Can you provide technical drawings or performance data?
A: Yes, we can supply detailed specifications, including dimensional drawings and load ratings, upon request to assist with your equipment integration.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
