Mining & Metallurgy
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
<p>Ensure smooth, reliable performance in automotive transmission systems with the <strong>Double Row Angular Contact Ball Bearing 3309 with Snap Ring</strong>—a precision-engineered solution that minimizes downtime and enhances operational stability. As an official SKF distributor, we guarantee 100% genuine bearings with full traceability, eliminating common supply chain risks and compliance hurdles for your production line.</p><ul><li>Double row design delivers superior radial and axial load handling, critical for high-torque transmission environments</li><li>Integrated snap ring simplifies installation and maintains optimal bearing positioning under dynamic conditions</li><li>Available in precision grades P0-P6 with steel, copper, or nylon cages to match your specific application requirements</li><li>Backed by SKF’s global quality standards and our dedicated technical support team for seamless integration into your manufacturing process</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 | -- | Angular Contact 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. | Double Row Angular Contact Ball Bearing |
| Separated | Separated |
| Rows Number | Double |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Precision Rating | P0 P2 P4 P5 P6 |
| Type | Ball |
| Structure | Angular Contact |
| Cage | Steel Cage.Copper Cage.Nylon Cage |
| Lubrication | Oil Grease |
| Transport Package | Carton Pallet |
| Specification | As Your Request |
| Trademark | SKF |
| Origin | Jiangsu China |
| Production Capacity | 1000000 |
| Industry | Typical Equipment |
|---|---|
| Automotive | Transmission Systems, Gearboxes, Drivetrains |
| Industrial Machinery | Power Transmission Units, Conveyors, Compressors |
| Manufacturing | Production Line Integrators, Assembly Equipment |
Automotive OEMs and maintenance teams know the cost of bearing failure in transmission systems—unplanned downtime, production line shutdowns, and warranty claims. Gray market bearings often lack proper traceability, leading to customs delays and quality disputes, while multi-tier distribution channels stretch delivery times by 30–50%, disrupting production schedules.
As an official SKF distributor, we provide the 3309 Double Row Angular Contact Ball Bearing with Snap Ring—100% genuine with full traceability documentation. Our large centralized warehouse ensures stable bulk supply, while emergency delivery options minimize downtime for critical repairs. Designed for automotive transmission systems, this bearing handles radial loads with precision, meeting ISO 9001 and SKF global standards.
This Double Row Angular Contact Ball Bearing excels in high-torque, high-speed transmission environments. The snap ring design ensures secure axial positioning, critical for maintaining alignment in gearbox assemblies. Whether in passenger vehicles or commercial trucks, it delivers consistent performance under varying loads and operating temperatures, reducing the risk of premature wear and system failure.
The 3309 Bearing’s double row structure increases radial load capacity compared to single row designs, making it ideal for transmission applications where load distribution is critical. Available precision ratings from P0 to P2 allow customization for specific tolerance requirements—P2 grade, for example, minimizes runout in high-precision gearboxes. Cage options include steel, copper, or nylon, each optimized for different speed and temperature conditions: steel cages excel in high-temperature environments, while nylon cages reduce noise in passenger vehicle applications. Lubricated with high-performance oil grease, the bearing maintains efficiency across a wide operating range.
Counterfeit bearings may offer lower upfront prices, but they often fail within 30–50% of the expected service life. This leads to repeated replacements, labor costs, and production losses that far exceed the initial savings. Genuine SKF bearings, like the 3309 with Snap Ring, undergo rigorous testing to ensure batch consistency and reliability, reducing long-term maintenance expenses. Our full-process quality management, compliant with SKF global standards, guarantees that each bearing meets the exact specifications required for your transmission system.
With over 60+ countries served, we bring decades of experience as a comprehensive industrial bearing OEM supplier. Our SKF-certified technical team provides personalized support—from model selection based on operating conditions to installation guidance and failure analysis. As an authorized distributor, every 3309 Bearing comes with official certification and traceability documents, ensuring compliance with export requirements. Our dedicated account managers track orders from warehouse to delivery, providing real-time visibility and peace of mind.
Don’t let transmission downtime impact your production targets. Send us your model list, application parameters, and order volume to receive a formal quotation within 24 hours. We support sample testing and small-batch trials to verify quality before mass production, ensuring the 3309 Bearing meets your exact requirements.
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every bearing comes with brand authorization and traceability certificates to confirm authenticity.
Q: How can I confirm if the 3309 Bearing fits my transmission system?
A: Provide your equipment model or operating condition parameters (load, speed, temperature), and our SKF-certified technical team will verify compatibility.
Q: What is the warranty policy?
A: All bearings are covered by SKF’s standard warranty, with manufacturing defects eligible for unconditional replacement.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 unit, supporting both emergency repairs and small-batch testing.
Q: How long does shipping take?
A: In-stock items ship within 3–7 business days via your preferred logistics (DHL, FedEx, UPS, air, or sea freight).
Q: How do I verify the bearing’s authenticity?
A: Check the packaging for SKF’s official holographic label, laser-etched part numbers, and scan the QR code for online verification. We provide complete traceability documents with each 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.