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 3311A-2Z/C3 for Gearbox Reducer with Steel Cage
Double Row Angular Contact Ball Bearing 3311A-2Z/C3 for Gearbox Reducer with Steel Cage
In Stock · Ready to Ship
<p>Ensure your gearbox reducer operates with uncompromised precision and reliability using our <strong>Double Row Angular Contact Ball Bearing 3311A-2Z/C3</strong>, engineered to deliver consistent torque transmission and extended service life in high-load industrial environments. As an authorized SKF distributor, we guarantee full traceability documentation to streamline your supply chain compliance and eliminate customs clearance delays.</p><ul><li>Steel cage construction minimizes friction under radial and axial loads, maintaining optimal performance even in continuous operation</li><li>C3 clearance rating provides thermal expansion flexibility, critical for gearbox applications with variable temperature conditions</li><li>2Z shielded design prevents contamination ingress, reducing maintenance requirements and downtime risks</li></ul>
Bore (d)
--
Outer Dia. (D)
--
Width (B)
--
Dynamic C
--
Static C₀
--
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 3311A-2Z/C3 for Gearbox Reducer with Steel Cage -- 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 (C₀) | -- | 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 |
|---|---|
| Industrial Machinery | Gearbox Reducers, Conveyors, Compressors |
| Manufacturing | Production Line Integrators, Factory Upgrading Equipment |
| Automotive | Transmission Systems, Electric Motors |
Stop Gearbox Failures — Genuine SKF 3311A-2Z/C3 Double Row Angular Contact Ball Bearing
Gearbox reducers in manufacturing lines face constant stress from radial and axial loads. When bearings fail prematurely, production halts, costing thousands in downtime. Many OEMs struggle with counterfeit bearings that lack proper traceability, leading to customs delays and quality disputes. Multi-tier distribution channels only worsen the problem, stretching lead times by 30–50% and disrupting production schedules.
Genuine SKF 3311A-2Z/C3 Bearings, In Stock and Ready to Ship
As an official SKF authorized distributor, we provide the Double Row Angular Contact Ball Bearing 3311A-2Z/C3 with steel cage — a critical component for gearbox reducers. Our large centralized warehouse ensures stable bulk supply, while our direct brand access eliminates the delays of traditional distribution. Each bearing comes with full traceability documentation, complying with ISO 9001 and SKF global standards, so you avoid customs clearance obstacles and quality liability issues.
Optimal Performance in Gearbox Reducer Applications
The SKF 3311A-2Z/C3 is engineered for gearbox reducers where combined radial and axial loads are present. Its double row angular contact design provides high rigidity and axial alignment, making it ideal for high-torque applications. The steel cage ensures stability at moderate speeds, while the C3 clearance rating accommodates thermal expansion in continuous operation. Whether in automotive transmission systems or industrial conveyor reducers, this bearing delivers consistent performance under demanding conditions.
Technical Details That Define Reliability
The SKF 3311A-2Z/C3’s bearing steel construction offers excellent durability and wear resistance, critical for gearbox environments with frequent load cycles. Its angular contact structure allows it to handle both radial loads and axial forces from either direction, reducing the need for multiple bearings. The steel cage material ensures minimal friction and optimal ball guidance, maintaining precision even at varying speeds. With precision ratings from P0 to P6, this bearing meets the strict tolerance requirements of high-end OEM matching, ensuring seamless integration into your equipment.
The Hidden Costs of Counterfeit Gearbox Bearings
Choosing non-genuine SKF bearings for gearbox reducers carries significant risks. Counterfeit products often fail within months, causing unexpected shutdowns. A single line stoppage can cost $10,000–$50,000 in lost production, far exceeding the initial savings on cheap bearings. Our 100% genuine SKF 3311A-2Z/C3 bearings come with certification, ensuring batch consistency and compliance with export traceability requirements. By investing in authentic components, you reduce long-term maintenance costs and protect your production integrity.
Why OEMs Trust Our SKF Bearing Supply
We serve 60+ countries worldwide, with core markets in Europe, North America, and Southeast Asia. Our SKF-certified technical team provides working condition-based model selection and installation guidance, eliminating the need for independent technical costs. As an authorized distributor, we offer door-to-door logistics and dedicated inventory reservation for long-term partners. Each bearing undergoes full-process quality management, from warehousing to delivery, with a dedicated account manager tracking every progress node. Our 24-hour quotation response ensures you get the SKF Gearbox Reducer Ball Bearing C3 you need without delay.
Packaging & Shipping
- Original SKF packaging with carton pallet for secure transport
- 3–7 business days delivery for in-stock items
- Global logistics options including DHL, FedEx, UPS, air, and sea freight
- Real-time tracking number provided for all shipments
- Minimum order quantity of 1 piece, supporting emergency maintenance needs
Get Your SKF 3311A-2Z/C3 Bearing Today
Don’t let bearing issues disrupt your gearbox reducer operation. Send us your model list, application parameters, and order volume to receive a formal quotation within 24 hours. Our sample testing and small-batch trial orders allow quality verification before mass production, ensuring the bearing fits your equipment perfectly. The sooner you order, the sooner you can restore production stability.
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 certificates to confirm authenticity.
Q: How do I confirm if the 3311A-2Z/C3 fits my gearbox reducer?
A: Provide your equipment model or working condition parameters (load, speed, temperature), and our SKF-certified technical team will verify compatibility at no cost.
Q: What is your warranty policy?
A: We adhere to SKF's original warranty standards, covering manufacturing defects with unconditional replacement or refund.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 piece, supporting both emergency repairs and small-batch trials.
Q: How long does shipping take?
A: In-stock bearings are delivered within 3–7 business days via DHL, FedEx, UPS, air, or sea freight as needed.
Q: How can I verify the bearing's authenticity?
A: Check the packaging for SKF's防伪标签, laser-etched part numbers, and use the SKF官网验证码. We provide complete traceability documents for every order.
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