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
High Precision Double Row Angular Contact Ball Bearing 3304 for CNC Machine Tool Spindle
High Precision Double Row Angular Contact Ball Bearing 3304 for CNC Machine Tool Spindle
In Stock · Ready to Ship
<p>Boost CNC machine tool spindle performance with the SKF 3304 bearing, engineered to deliver exceptional precision and stability for high-speed machining operations. This double row angular contact ball bearing minimizes vibration under heavy loads, ensuring consistent workpiece accuracy and extended spindle life—critical for maintaining production schedules and reducing downtime.</p><ul><li><strong>Precision rating options from P0 to P6</strong> accommodate diverse application requirements, with P4/P5 grades ideal for tight tolerance machining</li><li>Steel, copper, or nylon cage options allow customization based on operating temperature and load conditions</li><li>Radial and axial load handling capability supports complex cutting processes while maintaining shaft alignment</li></ul><p>Backed by full SKF traceability and technical certification, this bearing eliminates concerns about counterfeit risks and ensures seamless integration into your production line. Trust in a solution that combines OEM-grade reliability with the expertise of a global authorized distributor.</p>
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
High Precision Double Row Angular Contact Ball Bearing 3304 for CNC Machine Tool Spindle -- 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 |
| Trademark | SKF |
| Origin | Jiangsu China |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Manufacturing | CNC Machine Tools, Spindles |
Eliminate CNC Spindle Downtime with Genuine SKF 3304 Angular Contact Ball Bearings
CNC machine operators know the frustration of unexpected spindle failures—costing hours of production time and thousands in repair costs. Many turn to gray market suppliers for quick fixes, only to face counterfeit bearings that fail prematurely or lack proper traceability documents, causing customs delays and quality disputes.
SKF 3304 Bearing: Precision You Can Trust, In Stock and Ready to Ship
As an official SKF distributor, we provide the high precision double row angular contact ball bearing 3304 specifically engineered for CNC machine tool spindles. Our large centralized warehouse ensures this critical component is available for immediate dispatch, eliminating the 30–50% lead time delays common with multi-tier distributors. Each bearing comes with full traceability documentation, so you avoid the compliance headaches of counterfeit products.
Engineered for High-Speed CNC Spindle Performance
The SKF 3304 double row angular contact ball bearing excels in the demanding environment of CNC machine spindles, where high rotational speeds and radial loads require exceptional precision and stability. Its angular contact design allows it to handle combined radial and axial loads, maintaining spindle accuracy even during extended production runs. Whether used in vertical machining centers or horizontal lathes, this bearing delivers consistent performance under the rigorous conditions of metalworking operations.
Technical Details That Define Spindle Reliability
The precision rating options (P0 to P2) of the SKF 3304 bearing allow matching to specific spindle requirements—P2 grade offering the tightest tolerances for high-precision applications. The choice of cage materials (steel, copper, or nylon) provides flexibility: steel cages excel in high-temperature environments, while nylon cages reduce noise and friction at moderate speeds. The separated design facilitates easy mounting and dismounting, simplifying maintenance procedures. Lubricated with high-quality oil or grease, this bearing maintains optimal performance across a range of operating conditions, ensuring long service life for your CNC spindle.
Why Genuine SKF 3304 Bearings Lower Total Cost of Ownership
Choosing genuine SKF 3304 angular contact ball bearings over counterfeit alternatives reduces long-term costs significantly. Counterfeit bearings often fail within months, leading to unplanned downtime, emergency repair expenses, and potential damage to expensive spindle components. In contrast, SKF bearings undergo rigorous testing to meet ISO 9001 and SKF global standards, delivering reliable performance that extends mean time between failures. The investment in genuine bearings translates to lower maintenance costs, higher machine availability, and consistent production quality—ultimately reducing your total cost of ownership.
Why CNC Manufacturers Trust Our SKF Bearing Supply
Our position as an official SKF distributor ensures every 3304 bearing can be fully traced from production to delivery, with complete certification documentation. We implement full-process quality management, including incoming inspections and pre-shipment verification, to guarantee product integrity. Our SKF-certified technical team provides expert support for model selection, installation guidance, and failure analysis—helping you optimize bearing performance for your specific CNC application. With operations serving 60+ countries and a proven track record in industrial OEM supply, we deliver the reliability and technical expertise that CNC manufacturers demand.
Packaging & Shipping
- Original SKF packaging with authentication labels and product documentation
- Expedited processing for in-stock items, with dispatch within 3–7 business days
- Global door-to-door logistics via DHL, FedEx, UPS, air freight, or sea freight
- Real-time tracking provided for all shipments
- Minimum order quantity of 1 unit, supporting both emergency repairs and bulk production needs
Get Your SKF 3304 Bearing Shipped Today
Don’t let spindle downtime disrupt your production schedule. Send us your SKF 3304 bearing requirements, including quantity and application details, and our team will provide a formal quotation within 24 hours. With our ready stock and fast shipping, you can minimize machine idle time and get back to full production quickly.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official authorized SKF distributor. Every bearing comes with full traceability documentation and brand authorization to ensure authenticity.
Q: How do I confirm if the 3304 bearing fits my CNC spindle?
A: Provide your machine model or spindle specifications, and our SKF-certified technical team will verify compatibility and recommend the appropriate precision grade and cage material.
Q: What is the warranty policy for SKF 3304 bearings?
A: All bearings are covered by SKF's standard manufacturer warranty, which includes replacement for manufacturing defects.
Q: What is the minimum order quantity?
A: We accept orders for 1 unit, making us ideal for emergency repairs as well as bulk production requirements.
Q: How long does shipping take to [my country]?
A: In-stock bearings are dispatched within 3–7 business days. Transit time depends on location, with express options available for urgent needs.
Q: How can I verify the authenticity of the bearing upon receipt?
A: Each bearing includes SKF's original packaging with security features, laser-etched markings, and traceability certificates. We also provide guidance on verifying authenticity through SKF's official channels.
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