Mining & Metallurgy
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
<p>Ensure precision performance in your industrial machinery with the <strong>SKF NN3017 bearing</strong>, a super precision double row cylindrical roller bearing engineered to deliver exceptional rotational accuracy and load capacity. This NN 3017 Ktn9/Sp model features an 85mm inner diameter and open seal design, optimized for high-speed applications where minimal friction and maximum stability are critical—perfect for keeping production lines running smoothly even under demanding conditions.</p><ul><li>Double row cylindrical structure ensures superior radial load handling and alignment capability, reducing downtime from misalignment issues</li><li>SKF-certified quality with full traceability documentation, supporting seamless compliance for export and OEM production requirements</li><li>Lightweight 0.250kg single unit weight balances durability with operational efficiency, ideal for integrated machinery systems</li></ul>
Compatible with: Housings, adaptor sleeves, locking devices, SKF LGMT 2/3 grease, induction heaters, and SKF TMFT 36 fitting tools.
Formal quotation with SKF traceability cert within 24 hours · Sample orders available
24h Response
Quotation & Cert
60+ Countries
DDP/DAP/CIF
ISO 9001
Quality Certified
| Parameter | Value | Unit / Note |
|---|---|---|
| Bearing Series | -- | Cylindrical Roller Bearing |
| Bore Diameter (d) | -- | mm |
| Outer Diameter (D) | -- | mm |
| Width / Height (B) | -- | mm |
| Dynamic Load Rating (C) | -- | kN |
| Static Load Rating (Câ‚€) | -- | kN |
| Fatigue Limit Load (Pu) | -- | kN |
| Reference Speed | -- | r/min |
| Limiting Speed | -- | r/min |
| Mass | -- | kg |
| Clearance Class | C3 | ISO 281 |
| Cage Material | -- | -- |
| Sealing / Shield | -- | -- |
| Lubrication | Grease / Oil bath | -- |
| Operating Temp. Range | −30 to +120 °C | -- |
| Vibration Level | SKF E1 / Standard | -- |
| Misalignment Tolerance | -- | ° |
| Fit Recommendation (shaft) | -- | ISO |
| Fit Recommendation (housing) | -- | ISO |
| Replacement / Cross Ref. | -- | -- |
Engineered for demanding industrial environments, this SKF bearing series delivers reliable performance across a wide range of heavy-duty and precision applications.
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
Wind turbines, generators, gearboxes, and turbine main shafts.
Cranes, presses, rolling mills, and large industrial gearboxes.
Ship propulsion systems, deck machinery, and offshore platforms.
Kiln drives, ball mills, bucket elevators, and vibrating screens.
Paper machine rolls, dryer sections, and calender rolls.
Need Application Advice?
SKF-Certified Engineer
Selection · Failure analysis · Technical support
Every SKF bearing supplied by Dunyu Bearings adheres to SKF's global engineering standards -- from material science and heat treatment to precision tolerancing and noise classification.
Optimized internal geometry reduces friction and heat generation, extending service life by up to 50% compared to conventional designs. Ideal for high-speed and high-temperature applications.
Manufactured to ISO P0-P6 tolerance classes. Dimensional accuracy and running accuracy are 100% verified before shipment, with full batch traceability records.
Comprehensive sealing options: open, shielded (Z/2Z), rubber sealed (RS/2RS), and labyrinth variants. SKF V-rings and radial shaft seals available as integrated solutions.
LGMT 2/3 general purpose grease for most applications. LGEP 2 for heavy loads, LGHP 2 for high temperatures. SKF automatic lubricators (SYSTEM 24) for continuous re-lubrication.
Correct mounting is critical. SKF TMFT 36 fitting tool kit, induction heaters (TIH 030M/100M), and laser alignment tools ensure damage-free installation and maximum service life.
SKF Microlog and Enlight sensors for vibration, temperature, and speed monitoring. Enable predictive maintenance strategies to minimize unplanned downtime and optimize bearing replacement intervals.
| Parameter | Details |
|---|---|
| Model NO. | NN 3017 KTN9/SP |
| Type | Roller |
| Number of Row | Double Row |
| Structure | Cylindrical |
| Inner Diameter | 85 mm |
| Seals Type | Open |
| Trademark | SKF |
| Origin | China |
| Single Gross Weight | 0.250 kg |
| Selling Units | Single Item |
| Industry | Typical Equipment |
|---|---|
| Manufacturing | CNC Machine Tools, Gearboxes, Spindles |
| Industrial Machinery | Electric Motors, Pumps, Compressors |
| Automotive | Transmission Systems, Precision Drives |
| General Machinery | Conveyors, Printing Presses, Textile Machinery |
Industrial OEMs know the cost of bearing failure isn't just the part itself—unplanned downtime from counterfeit or substandard components can halt entire production lines, erase profit margins, and damage customer relationships. When critical machinery relies on precision, settling for gray-market bearings with incomplete traceability documentation risks customs delays and quality disputes that harm your bottom line.
As an official SKF authorized distributor, we eliminate these risks with the Super Precision Double Row Cylindrical Roller Bearing NN 3017 Ktn9/Sp—designed for the high-load, high-precision demands of industrial machinery. Our centralized warehouse maintains ready inventory, ensuring this SKF precision cylindrical roller bearing is available for emergency repairs or scheduled production runs, without the 30–50% lead time delays of traditional multi-tier distribution channels.
This double row cylindrical roller bearing excels in applications requiring radial load capacity and precise shaft guidance. Its open design allows for lubrication customization, making it ideal for machinery operating at moderate speeds with continuous load conditions—common in CNC spindles, gearboxes, and industrial motors where dimensional accuracy directly impacts product quality and equipment lifespan.
The NN 3017 Ktn9/Sp's double row configuration delivers superior radial load distribution compared to single row designs, critical for maintaining stability in heavy-duty industrial machinery. With an inner diameter of 85 mm, it provides a robust fit for standard shaft sizes, while the KTN9 cage design—manufactured to SKF's global standards—ensures optimal roller guidance and reduced friction. As a precision roller bearing, it meets strict OEM requirements for rotational accuracy, minimizing vibration and extending equipment service intervals.
Counterfeit cylindrical roller bearings often cut corners on material quality and manufacturing tolerances, leading to premature wear, overheating, and catastrophic failure. A single bearing failure in a production line can cost thousands in downtime and repairs—far exceeding the savings from cheaper alternatives. Our 100% genuine SKF bearings come with full traceability documentation, ensuring compliance with ISO 9001 standards and reducing liability risks. By investing in authentic SKF double row cylindrical roller bearings, you protect your equipment, maintain production schedules, and lower long-term maintenance costs.
With 60+ countries served and a SKF-certified technical team, we deliver more than just products—we provide end-to-end support. Our vertical distribution model ensures direct access to SKF's global quality control system, with every bearing inspected before shipment. We offer customized OEM schemes, sample testing for quality verification, and dedicated account managers who track orders from warehouse to delivery. Whether you're an industrial equipment OEM or a maintenance service provider, our door-to-door logistics and 24-hour quotation response keep your operations running smoothly.
Don't let bearing issues slow your production. Send us your model list, application parameters, and order volume to receive a formal quotation with brand authorization and traceability certificates within 24 hours. Our team can also assist with sample testing to verify performance before full-scale deployment—because the right bearing isn't just a part, it's a production-critical investment.
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every bearing comes with complete traceability documentation and brand certification to ensure authenticity.
Q: How can I confirm if this bearing fits my equipment?
A: Our SKF-certified technical team can verify compatibility. Provide your equipment model or operating parameters (load, speed, temperature) for free选型 assistance.
Q: What is the warranty policy?
A: All bearings come with SKF's standard manufacturer warranty, covering manufacturing defects with unconditional replacement.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 piece, making us ideal for emergency repairs and small-batch trials.
Q: How long does shipping take?
A: In-stock bearings ship within 3-7 business days via global express logistics (DHL/FedEx/UPS) with tracking.
Q: How do I verify bearing authenticity?
A: Each bearing includes SKF's original packaging with security labels, laser-etched part numbers, and serial codes verifiable through SKF's official channels. We provide full traceability documentation with every order.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
As an officially authorized SKF distributor, every bearing we supply carries full documentation from SKF's global manufacturing network -- with complete batch traceability from factory to your facility.
Every shipment includes official SKF certification of origin, verifying product authenticity and manufacturing source.
Full production batch traceability maintained for minimum 5 years. Enables quality audit and failure investigation.
Verified annually by SKF. Our authorized status can be confirmed directly through the SKF distributor verification system.
All products carry SKF manufacturer warranty. Defective products are replaced or refunded -- no questions asked.
SKF QR code and holographic seal on every package. Verify authenticity instantly via SKF's official verification portal.
Authorized Distributor
Shanghai Dunyu Bearing
Official SKF Authorized Distributor
ISO 9001
SKF Authorized
Full Traceability
All products shipped in original SKF packaging with anti-counterfeit seal, QR code, and batch label intact.
Standard export carton for small orders. Custom wooden crates with moisture-proof lining for large/heavy shipments.
Sea freight (FCL/LCL), air freight, and express (DHL/FedEx/UPS). DDP, DAP, CIF, FOB terms all supported.
In-stock items: 1-3 days dispatch. Air freight: 3-7 days door-to-door. Sea freight: 15-35 days by destination.
| Region | Mode | Transit Time | Incoterms |
|---|---|---|---|
| Europe | Sea / Air / Express | 15-25d / 5-7d / 3-5d | DDP · DAP · CIF · FOB |
| North America | Sea / Air / Express | 20-30d / 5-8d / 3-5d | DDP · DAP · CIF · FOB |
| Southeast Asia | Sea / Air / Express | 7-15d / 3-5d / 2-4d | DDP · DAP · CIF · FOB |
| Middle East | Sea / Air / Express | 15-25d / 4-7d / 3-5d | DDP · DAP · CIF · FOB |
| Other Regions | Sea / Air / Express | Upon Confirmation | FOB · CIF · Negotiable |
Every product we supply comes with original SKF packaging including an anti-counterfeit holographic seal and QR code. You can scan the QR code on the SKF official website to verify authenticity. We also provide the SKF Certificate of Origin with every shipment, and our authorized distributor status can be verified directly through SKF's global distributor portal.
There is no strict minimum order quantity for standard catalog items. We support single-piece sample orders for testing and evaluation. For bulk procurement and long-term supply programs, we offer preferential pricing and dedicated inventory reservation. Contact our sales team for a customized procurement plan.
We guarantee a formal quotation with full SKF traceability certification within 24 business hours of receiving your inquiry. For urgent requirements, our team can typically respond within 2 hours during business hours (Mon-Sat, 9:00-18:00 GMT+8). Contact us via WhatsApp for fastest response.
Yes, we fully support DDP, DAP, CIF, and FOB incoterms across 60+ countries. Our logistics team handles all export documentation, customs clearance, and last-mile delivery. We work with leading freight forwarders and express carriers (DHL, FedEx, UPS) to ensure reliable and timely delivery.
Absolutely. Our SKF-certified engineers provide comprehensive technical support including bearing selection, application analysis, failure investigation, and lubrication planning. We can also assist with housing selection, mounting tool recommendations, and condition monitoring solutions. Technical support is available 24/7 via email and WhatsApp.
We accept T/T (bank transfer), L/C (letter of credit) for large orders, and Western Union. Standard terms are 30% deposit with 70% balance before shipment. For established long-term customers with framework agreements, we offer net payment terms. All transactions are conducted in USD or EUR.
All products carry the full SKF manufacturer warranty. In the unlikely event of a defective product, we will arrange replacement or full refund -- no questions asked. Our quality team will also conduct a failure analysis to identify the root cause and prevent recurrence. Please retain the original packaging and documentation for warranty claims.
Still have questions? Chat with our SKF engineers →
Send us your bearing model, quantity, and delivery requirements. Our SKF-certified team will respond with a formal quotation, traceability certificate, and logistics plan.