Mining & Metallurgy
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
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100% Genuine SKF
Full Traceability
ISO 9001 Certified
SKF Authorized
Angular Contact Bearing
Double Row Angular Contact Ball Bearing 3304-A TN9 Nylon Cage for Machine Tool Precision
Double Row Angular Contact Ball Bearing 3304-A TN9 Nylon Cage for Machine Tool Precision
In Stock · Ready to Ship
<p>Boost machine tool precision and reduce downtime with the <strong>Double Row Angular Contact Ball Bearing 3304-A TN9 Nylon Cage</strong>—a SKF-engineered solution designed to deliver consistent performance in high-speed industrial applications. Its dual-row design and preloaded angular contact configuration minimize axial play, ensuring stable spindle operation even under heavy radial and thrust loads, while the nylon cage reduces friction and heat buildup for extended service life.</p><ul><li>SKF-certified 100% genuine with full traceability documentation, eliminating compliance risks in global supply chains</li><li>Precision ratings available from P0 to P5, meeting strict tolerance requirements for CNC machining centers and precision grinders</li><li>Direct OEM supply ensures shorter lead times and batch consistency, aligning seamlessly with production scheduling needs</li></ul>
Bore (d)
--
Outer Dia. (D)
--
Width (B)
--
Dynamic C
--
Static Câ‚€
--
Speed Limit
--
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
Full Specifications
Complete Technical Parameters
Double Row Angular Contact Ball Bearing 3304-A TN9 Nylon Cage for Machine Tool Precision -- Parameter Sheet
SKF · Angular Contact Bearing
| 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. | -- | -- |
* All specifications are reference values. Contact our SKF engineers for application-specific confirmation.
Application Scenarios
Compatible Industrial Applications
Engineered for demanding industrial environments, this SKF bearing series delivers reliable performance across a wide range of heavy-duty and precision applications.
Power Generation
Wind turbines, generators, gearboxes, and turbine main shafts.
Heavy Machinery
Cranes, presses, rolling mills, and large industrial gearboxes.
Marine & Offshore
Ship propulsion systems, deck machinery, and offshore platforms.
Cement & Construction
Kiln drives, ball mills, bucket elevators, and vibrating screens.
Pulp & Paper
Paper machine rolls, dryer sections, and calender rolls.
Full Portfolio
One-Stop SKF Supporting Solutions
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Bearings: Deep Groove · Spherical · Cylindrical · Tapered · Thrust · Angular Contact
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Sealing: Radial shaft seals · V-rings · Labyrinth seals · Bearing isolators
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Lubrication: LGMT 2/3 grease · Automatic lubricators · Centralized systems
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Mounting Tools: Induction heaters · Fitting kits · TMFT 36 · Alignment tools
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Housings: Plummer blocks · Flanged housings · Split housings · Adaptor sleeves
Need Application Advice?
SKF-Certified Engineer
Selection · Failure analysis · Technical support
Technical Expertise
SKF Global Standards & Supporting Solutions
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.
Internal Design
SKF E1 Geometry
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.
ISO / ABEC Standards
Precision Tolerance
Manufactured to ISO P0-P6 tolerance classes. Dimensional accuracy and running accuracy are 100% verified before shipment, with full batch traceability records.
SKF Sealing Systems
Sealing Solutions
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.
SKF Lubrication Systems
Lubrication Planning
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.
SKF Maintenance Tools
Mounting & Alignment
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.
Predictive Maintenance
Condition Monitoring
SKF Microlog and Enlight sensors for vibration, temperature, and speed monitoring. Enable predictive maintenance strategies to minimize unplanned downtime and optimize bearing replacement intervals.
Product Details
Product Specifications
| 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 |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Manufacturing | CNC Machine Tools, Precision Spindles, Lathes, Milling Machines |
| Industrial Machinery | Grinders, Boring Machines, Machining Centers |
Machine Tool Downtime Costs Add Up — Get Reliable SKF 3304-A TN9 Bearings Now
Machine tool operators know the frustration: unexpected spindle failures from low-quality bearings halt production, eating into profits with every minute of downtime. Counterfeit bearings often fail prematurely, lacking the precision needed for tight tolerances, while multi-tier distributors stretch lead times by 30–50%, making emergency repairs a logistical nightmare.
SKF 3304-A TN9 Bearings: Precision You Can Trace, Stock You Can Count On
Our Double Row Angular Contact Ball Bearing 3304-A TN9 with Nylon Cage delivers the accuracy and reliability machine tools demand. As an official SKF distributor, we ensure full traceability for every bearing, eliminating customs clearance issues and quality disputes. With a large centralized warehouse, we maintain stock for quick turnaround, so you can keep production schedules on track without unnecessary delays.
Engineered for Machine Tool Precision
This Precision Angular Contact Ball Bearing excels in high-speed, high-precision applications like CNC machine spindles and grinding equipment. Its double row design handles both radial and axial loads, while the Nylon Cage reduces friction and heat buildup during continuous operation. Whether facing rapid acceleration or sustained high RPM, this bearing maintains dimensional stability to preserve machining accuracy.
Key Technical Features That Matter
The Nylon Cage in the SKF 3304-A TN9 enhances performance by providing excellent lubricant retention and reducing noise compared to metal alternatives, critical for precision machining environments. Available precision ratings from P0 to P5 allow customization based on application requirements—P5 grade, for example, minimizes runout to ensure consistent part quality. The bearing steel construction offers high fatigue resistance, extending service life even under heavy load cycles, while oil and grease lubrication options accommodate diverse operating conditions.
Why Genuine SKF Bearings Lower Your Total Cost
Choosing genuine SKF Angular Contact Bearings over counterfeits avoids hidden costs: early failures that damage spindles, unplanned downtime, and rework from poor precision. Each bearing meets ISO 9001 and SKF global standards, ensuring batch consistency that multi-tier suppliers can’t match. While gray market options may seem cheaper upfront, the reliability of authentic SKF components reduces maintenance frequency and extends equipment life, delivering lower total cost of ownership over time.
Your Trusted Partner for OEM Bearing Supply
With over 60 countries served and a SKF-certified technical team, we stand behind every bearing we supply. Our full-process quality management includes pre-shipment inspections, and we provide comprehensive documentation for export compliance. As a vertical distributor, we cut out middlemen to offer stable bulk supply and fast emergency delivery—critical for keeping your production lines running. Our dedicated account managers provide end-to-end support, from选型 assistance to after-sales technical service.
Packaging & Shipping
- Original SKF packaging with authentication labels and batch traceability documentation
- Expedited shipping for urgent orders, with delivery in 3–7 business days for in-stock items
- Flexible logistics options including DHL, FedEx, UPS, air freight, and sea freight
- Real-time tracking provided for all shipments
- Minimum order quantity of 1 unit, supporting both emergency repairs and small-batch requirements
Get Your SKF 3304-A TN9 Bearings Shipped Today
Don’t let bearing issues slow your production. Send us your bearing model list, application parameters, and required quantity, and we’ll deliver a formal quotation with traceability certificates within 24 hours. With our stock on hand, you can minimize downtime and get back to manufacturing with confidence.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF authorized distributor. Every bearing comes with full traceability documentation and brand authorization to ensure authenticity.
Q: How can I confirm this bearing fits my machine tool?
A: Provide your equipment model or spindle specifications, and our SKF-certified technical team will verify compatibility and offer选型 recommendations at no cost.
Q: What is the warranty policy?
A: All bearings are covered by SKF’s standard manufacturer warranty, with replacement guaranteed for any manufacturing defects.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 unit, making it easy to source both emergency repairs and small production runs.
Q: How quickly can you ship?
A: In-stock bearings are shipped within 3–7 business days. We offer expedited logistics options for urgent requirements.
Q: How do I verify the bearing’s authenticity?
A: Each bearing includes SKF’s original packaging with security labels, laser-etched part numbers, and batch codes that can be cross-verified through official channels. We also provide complete traceability certificates upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
Authenticity & Warranty
Genuine SKF Traceability & Quality Commitment
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.
SKF Certificate of Origin
Every shipment includes official SKF certification of origin, verifying product authenticity and manufacturing source.
Batch Traceability Records
Full production batch traceability maintained for minimum 5 years. Enables quality audit and failure investigation.
SKF Authorized Distributor Status
Verified annually by SKF. Our authorized status can be confirmed directly through the SKF distributor verification system.
Quality Warranty
All products carry SKF manufacturer warranty. Defective products are replaced or refunded -- no questions asked.
Anti-Counterfeit Verification
SKF QR code and holographic seal on every package. Verify authenticity instantly via SKF's official verification portal.
Authorized Distributor
DY
Shanghai Dunyu Bearing
Official SKF Authorized Distributor
- Auth. Since
- 2010+
- Quality Std.
- ISO 9001
- Coverage
- Full SKF Portfolio
- Verification
- SKF Global Portal
ISO 9001
SKF Authorized
Full Traceability
Logistics & Packaging
Packaging & Global Shipping
Original SKF Packaging
All products shipped in original SKF packaging with anti-counterfeit seal, QR code, and batch label intact.
Export Carton + Wooden Crate
Standard export carton for small orders. Custom wooden crates with moisture-proof lining for large/heavy shipments.
Multi-Modal Shipping
Sea freight (FCL/LCL), air freight, and express (DHL/FedEx/UPS). DDP, DAP, CIF, FOB terms all supported.
Delivery Timeline
In-stock items: 1-3 days dispatch. Air freight: 3-7 days door-to-door. Sea freight: 15-35 days by destination.
Shipping Terms & Regions
| 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 |
Related Products
Related Models & Supporting Components
FAQ
Frequently Asked Questions
How do I verify the product is 100% genuine SKF?
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.
What is the minimum order quantity (MOQ)?
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.
How long does it take to receive a formal quotation?
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.
Do you support DDP (Delivered Duty Paid) shipping?
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.
Can you provide technical support for bearing selection?
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.
What are the payment terms?
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.
What happens if I receive a defective product?
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 →
Start Your Procurement
Get a Formal Quote
Within 24 Hours.
Send us your bearing model, quantity, and delivery requirements. Our SKF-certified team will respond with a formal quotation, traceability certificate, and logistics plan.
- 100% Genuine SKF with Certificate of Origin
- Formal quotation within 24 hours
- Sample orders & bulk supply supported
- DDP/DAP/CIF to 60+ countries
- Dedicated SKF-certified account manager
Send Inquiry -- SKF Bearing Specialist Online