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
Cylindrical Roller Bearing
Spindle Matching Double Row Cylindrical Roller Bearing Nu320 Ec J/C3 for Machine Tools with C3 Clearance
Spindle Matching Double Row Cylindrical Roller Bearing Nu320 Ec J/C3 for Machine Tools with C3 Clearance
In Stock · Ready to Ship
<p>Ensure your machine tool spindle operates with precision and reliability using our <strong>Spindle matching double row cylindrical roller bearing Nu320 Ec J/C3</strong>. Engineered for high-speed rotation, this C3 clearance bearing minimizes vibration under heavy loads, reducing tool wear and extending production uptime. As an authorized SKF distributor, we guarantee full traceability documentation to streamline your procurement process and eliminate compliance concerns.</p><ul><li>Double row cylindrical roller design delivers exceptional radial load capacity for continuous machining operations</li><li>Brass cage construction ensures stable lubrication retention, critical for maintaining tight tolerances in precision applications</li><li>Medium-large outer dimension (120-190mm) fits standard spindle assemblies, simplifying replacement and retrofitting</li><li>Hardness rating of 60-64 HRC provides long-term durability against repeated thermal and mechanical stress</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
Spindle Matching Double Row Cylindrical Roller Bearing Nu320 Ec J/C3 for Machine Tools with C3 Clearance -- Parameter Sheet
SKF · Cylindrical Roller Bearing
| 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. | -- | -- |
* 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 Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage | Brass, Steel |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| Transport Package | Carton Pallet |
| Specification | As Your Request |
| Trademark | zhaoyun |
| Origin | Jiangsu China |
| HS Code | 8482800000 |
| Production Capacity | 1000000 |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Manufacturing | CNC Machine Tools, Precision Machining Centers, Lathes, Milling Machines |
Stop Spindle Failures – Get Reliable Nu320 EC J/C3 Spindle Roller Bearings Delivered Fast
Machine tool operators know the cost of spindle downtime: unmet production deadlines, emergency repair fees, and idle labor. Counterfeit bearings often fail prematurely under high-speed rotation, while multi-tier distributors delay deliveries by 30–50%, leaving your production line waiting. Even genuine bearings from unreliable sources may lack proper clearance matching, reducing spindle precision and tool life.
Genuine Double Row Cylindrical Roller Bearings for Machine Tool Spindles
Our Nu320 EC J/C3 spindle matching cylindrical roller bearing solves these issues with official authorization and full traceability. As an SKF distributor, we maintain a large centralized warehouse ensuring immediate availability for critical replacements. Each bearing undergoes full-process quality management compliant with ISO 9001 standards, guaranteeing batch consistency for your production line.
Where This Bearing Performs
Designed for machine tool spindles operating under high radial loads and moderate speeds, this double row cylindrical roller bearing excels in precision machining applications. Its separated inner and outer rings allow easy mounting and dismounting, simplifying maintenance. The C3 clearance ensures optimal performance in conditions where thermal expansion occurs, preventing excessive preload and premature failure.
Technical Details That Define Performance
The 60-64 HRC hardness of the bearing steel provides exceptional wear resistance, extending service life under continuous operation. Brass and steel cage options offer tailored solutions: brass cages excel in high-speed applications with better heat dissipation, while steel cages provide enhanced durability for heavy-duty machining. Vibration grades Z1V1 to Z3V3 allow selection based on precision requirements, with higher grades reducing noise and improving surface finish quality. The non-aligning design ensures stable performance in rigid spindle assemblies where shaft misalignment is minimal.
The True Cost of Compromising on Bearing Quality
Counterfeit spindle bearings may save upfront costs but often lead to catastrophic failures. A single spindle breakdown can cost thousands in lost production – not counting repair parts and labor. Our genuine bearings, backed by SKF global standards, reduce total cost of ownership by minimizing unplanned downtime and extending maintenance intervals. Complete traceability documentation eliminates customs clearance delays and quality liability disputes, critical for export-oriented manufacturers.
Why Buyers Trust Our Bearing Solutions
With over 60 countries served, our authorized distribution network ensures genuine products with complete certification. Our SKF-certified technical team provides free model selection support based on your specific working conditions, preventing costly mismatches. We offer sample testing and small-batch trials before mass orders, ensuring compatibility with your equipment. Dedicated account managers track every order from warehouse to delivery, providing real-time visibility and peace of mind. Global door-to-door logistics ensures your bearings arrive when and where you need them.
Packaging & Shipping
- Carton pallet packaging with secure padding to prevent damage during transit
- 3-7 business days delivery for in-stock items
- Flexible shipping options including DHL, FedEx, UPS, air, and sea freight
- Real-time logistics tracking number provided upon dispatch
- Minimum order quantity of 1 piece, supporting emergency repairs and small-batch requirements
Get Your Spindle Bearings Now
Don’t let spindle issues disrupt your production schedule. Send us your bearing model, application parameters, and required quantity today. Our team will provide a formal quotation with certification within 24 hours, helping you get back to full productivity quickly.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: As an official authorized SKF distributor, all our products are 100% genuine with complete traceability documentation and brand certification.
Q: How do I confirm if this bearing fits my machine tool spindle?
A: Provide your machine model or spindle specifications, and our SKF-certified technical team will verify compatibility and provide free selection guidance.
Q: What is your warranty policy?
A: We offer warranty coverage in accordance with SKF global standards, including unconditional replacement for manufacturing defects.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 piece to support emergency repair needs and small-batch procurement.
Q: How long does shipping take?
A: In-stock bearings are shipped within 3-7 business days, with flexible logistics options including DHL, FedEx, UPS, air, and sea freight.
Q: How can I verify the authenticity of the bearings?
A: Each bearing comes with official packaging, laser marking, and traceability certificates. You can cross-verify using SKF's official channels with the provided documentation.
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