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
Double Row Cylindrical Roller Bearing NN3012-K-TN-Sp for CNC Machine Tools with Low Noise
Double Row Cylindrical Roller Bearing NN3012-K-TN-Sp for CNC Machine Tools with Low Noise
In Stock · Ready to Ship
<p>Ensure your CNC machine tools operate with minimal vibration and extended service life using our <strong>Double Row Cylindrical Roller Bearing NN3012-K-TN-Sp</strong>. Engineered for precision lathes and machining centers, this low-noise bearing maintains stable radial load capacity even under high-speed rotation, eliminating production disruptions from equipment downtime.</p><ul><li>60-64 HRC hardness and Z3V3 vibration class ensure consistent performance in continuous operation</li><li>Separated design with brass/steel cage allows easy installation and maintenance, reducing setup time</li><li>Complies with ISO 9001 standards, backed by full traceability documentation for seamless export logistics</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 Cylindrical Roller Bearing NN3012-K-TN-Sp for CNC Machine Tools with Low Noise -- 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 |
| HS Code | 8482800000 |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Manufacturing | CNC Machine Tools, Precision Lathes, Machining Centers |
Eliminate CNC Machine Downtime with NN3012-K-TN-Sp Double Row Cylindrical Roller Bearing
CNC machine operators know the frustration of unexpected spindle failures—hours of production lost, missed deadlines, and costly repairs. Many face counterfeit bearings that fail prematurely, while multi-tier distributors stretch lead times by 30–50%, leaving production lines idle. Even genuine bearings often lack proper technical support for optimal selection and installation, leading to subpar performance.
Low Noise Precision for CNC Machine Tools
The NN3012-K-TN-Sp Double Row Cylindrical Roller Bearing delivers the reliability OEMs need. As an official SKF distributor, Dunyu Bearings ensures full traceability, so you avoid counterfeit risks and customs clearance issues. Our large centralized warehouse maintains stock for fast emergency delivery, minimizing production disruptions. This bearing’s low noise design makes it ideal for precision CNC lathes and machining centers where operational quietness and stability are critical.
Engineered for High-Speed CNC Operations
This Double Row Cylindrical Roller Bearing excels in high-speed, precision applications. With non-aligning design and separated construction, it maintains accuracy under radial and axial loads typical in CNC spindle operations. The 60-64 HRC hardness ensures durability, while vibration levels (Z1V1 to Z3V3) can be selected to match specific noise requirements—critical for maintaining workpiece quality and extending tool life in precision machining.
Technical Features That Enhance CNC Performance
Key parameters directly impact your machine’s performance. The separated design allows easy mounting and dismounting, simplifying maintenance and reducing downtime. Cage options (brass or steel) let you optimize for speed and load capacity—brass cages excel in high-speed applications by reducing friction and heat buildup. Clearance grades (C0 to C5) enable precise preload adjustment, balancing rigidity and thermal expansion in varying operating temperatures. With outer dimensions in the 120–190mm range, this bearing fits medium to large CNC spindles commonly used in automotive and aerospace component manufacturing.
Why Genuine Bearings Lower Total Cost of Ownership
Choosing genuine bearings over gray-market alternatives reduces long-term costs. Counterfeit bearings often fail within months, causing secondary damage to spindles and motor shafts—repairs that can exceed the cost of 10 genuine bearings. Our ISO 9001 compliant quality management ensures each bearing meets SKF global standards, delivering consistent performance and longer service life. For OEMs exporting to Europe or North America, complete traceability documentation prevents shipment delays and liability disputes, avoiding costs that erode profit margins.
Our Commitment to CNC Manufacturers
Dunyu Bearings serves 60+ countries with a SKF-certified technical team ready to support your CNC application. We provide door-to-door logistics, so bearings arrive when and where you need them. Our four-step OEM process includes 24-hour quotations with authorization certificates, sample testing, dedicated inventory reservation, and full-cycle account management. Unlike suppliers who only deliver products, we offer working condition-based selection guidance and failure analysis, helping you avoid costly technical mistakes.
Packaging & Shipping
- Secure carton pallet packaging with protective materials to prevent damage during transit
- Stock availability ensures 3-7 business day delivery for urgent CNC maintenance needs
- Global logistics options including DHL, FedEx, UPS, air, and sea freight
- Real-time tracking numbers provided once shipment is dispatched
- Minimum order quantity of 1 piece supported for emergency repairs
Keep Your CNC Machines Running—Request a Quote Today
Every hour of CNC downtime costs money. Send us your NN3012-K-TN-Sp bearing requirements, including quantity and application details, and our team will respond within 24 hours with a formal quotation and traceability documentation. Get the precision and reliability your production line deserves.
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 to confirm authenticity.
Q: How do I confirm if this bearing fits my CNC machine?
A: Provide your machine model or spindle specifications, and our SKF-certified technical team will verify compatibility at no cost.
Q: What is the warranty policy?
A: All bearings come with SKF's standard manufacturer warranty, covering defects in materials and workmanship.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 piece to support emergency maintenance needs.
Q: How long does shipping take?
A: In-stock bearings ship within 3-7 business days via your choice of DHL, FedEx, UPS, air, or sea freight.
Q: How can I verify the bearing's authenticity?
A: Each bearing includes SKF's original packaging withé˜²ä¼ªæ ‡ç¾ and laser marking. We also provide full traceability certificates for verification.
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