Mining & Metallurgy
Crushers, mills, conveyors, and smelting equipment under heavy radial/axial loads.
Main View
100% Genuine SKF
Full Traceability
ISO 9001 Certified
SKF Authorized
Tapered Roller Bearing
SKF 3984/3920 Tapered Roller Bearing 66.68×112.71×30.16mm for Heavy Machinery OEM Applications
SKF 3984/3920 Tapered Roller Bearing 66.68×112.71×30.16mm for Heavy Machinery OEM Applications
In Stock · Ready to Ship
<p>Ensure seamless heavy machinery performance with reliable SKF 3984/3920 tapered roller bearing, engineered to deliver consistent load handling and minimize downtime in critical OEM applications. With precision dimensions of 66.68×112.71×30.16mm and separated raceway design, this bearing simplifies installation and maintenance while maintaining batch stability—ideal for production lines requiring traceable, high-quality components.</p><ul><li>Single-row tapered structure optimized for radial and axial load distribution in heavy-duty equipment</li><li>Available with iron, brass, or nylon cages to match specific operating conditions and temperature requirements</li><li>Backed by SKF-certified technical support and direct OEM supply channels for fast, documented delivery</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
SKF 3984/3920 Tapered Roller Bearing 66.68×112.71×30.16mm for Heavy Machinery OEM Applications -- Parameter Sheet
SKF · Tapered Roller Bearing
| Parameter | Value | Unit / Note |
|---|---|---|
| Bearing Series | -- | Tapered Roller 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
-
Bearings: Deep Groove · Spherical · Cylindrical · Tapered · Thrust · Angular Contact
-
Sealing: Radial shaft seals · V-rings · Labyrinth seals · Bearing isolators
-
Lubrication: LGMT 2/3 grease · Automatic lubricators · Centralized systems
-
Mounting Tools: Induction heaters · Fitting kits · TMFT 36 · Alignment tools
-
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. | 3984/3920 |
| Cage | Iron Cage/Brass Cage/Nylon Cage |
| Precision Rating | P0 P6 P5 P4 P2 |
| Service | OEM ODM |
| Rows Number | Single |
| Structure | Taper |
| Aligning | Non-Aligning Bearing |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Lubricate | Grease or Oil |
| Seals Type | Zz 2RS Open |
| Separated | Separated |
| Rolling Body | Roller Bearings |
| Load Direction | Radial Bearing |
| Outer Dimension | 35mm-180mm |
| Specification | 66.68×112.71×30.16 mm |
| Trademark | SKF |
| Origin | Sweden |
| HS Code | 8482200000 |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Heavy Machinery | Construction Excavators, Mining Loaders, Industrial Crushers |
| Manufacturing | Steel Rolling Mills, Conveyor Systems, Gearboxes |
| Agriculture | Harvesting Machinery, Tractor Transmissions |
| Transportation | Heavy-Duty Truck Axles, Rail Cargo Vehicles |
Stop Production Delays with Genuine SKF 3984/3920 Tapered Roller Bearings
OEM manufacturers know the cost of bearing failure—unplanned downtime, production line halts, and costly rework. Gray market bearings often lack full traceability, leading to customs clearance issues and quality disputes. Multi-tier distribution channels stretch delivery times by 30–50%, making it hard to align with tight production schedules. When machinery depends on reliable components, these challenges directly impact your bottom line.
Genuine SKF 3984/3920 Bearings: In Stock and Traceable
As an official SKF distributor, we provide the SKF 3984/3920 tapered roller bearing with complete traceability documentation, ensuring compliance with export requirements and quality standards. Our large centralized warehouse stocks this 66.68×112.71×30.16mm bearing, ready for immediate dispatch to meet your emergency maintenance or scheduled production needs. Whether for heavy machinery gearboxes, conveyor systems, or industrial crushers, this bearing delivers the batch consistency critical for OEM assembly lines.
Engineered for Heavy-Duty Industrial Conditions
The SKF 3984/3920 tapered roller bearing excels in high-load applications, supporting both radial and axial forces in heavy machinery. Its separated structure allows for easy mounting and dismounting during maintenance, while precision ratings from P0 to P2 ensure compatibility with demanding equipment tolerances. Whether operating in dusty construction sites, high-temperature manufacturing plants, or continuous-duty mining operations, this bearing maintains performance under extreme conditions.
Technical Features That Maximize Equipment Uptime
The 66.68mm bore diameter and 112.71mm outer diameter of the SKF 3984/3920 are optimized for balanced load distribution, while the 30.16mm width provides stability in high-torque environments. Available with iron, brass, or nylon cages, the bearing can be tailored to specific application needs—brass cages for high-temperature resilience, nylon for reduced noise in precision machinery. Vibration classes Z1V1 to Z3V3 ensure smooth operation, minimizing wear on connected components and extending overall equipment life. Multiple seal options (Zz, 2RS, Open) allow adaptation to varying lubrication and contamination conditions, from grease-lubricated gearboxes to oil-bath industrial systems.
Avoid Hidden Costs: The Value of Genuine SKF Bearings
Counterfeit tapered roller bearings may offer lower upfront prices, but they often fail prematurely under heavy loads, leading to unplanned downtime. A single production line shutdown can cost thousands in lost output, far exceeding the savings from non-genuine parts. Our SKF 3984/3920 bearings comply with ISO 9001 and SKF global standards, backed by full traceability from raw materials to delivery. This reduces the risk of quality disputes and ensures your machinery meets performance specifications, lowering total cost of ownership over the long term.
Why Industrial OEMs Choose Our SKF Bearings
With over 60 countries served, our authorized distribution network guarantees 100% genuine SKF products with certification. Our SKF-certified technical team provides application-specific guidance, from model selection to installation best practices, reducing the risk of premature failure. Our standardized OEM process includes 24-hour quotation with authorization documents, sample testing for quality verification, and dedicated account managers tracking orders from warehouse to delivery. We support small-batch trials and long-term supply agreements, ensuring stable inventory for your production scheduling.
Packaging & Shipping
- Original SKF packaging with anti-counterfeit labels, individually boxed and palletized for secure transport
- Package dimensions: 12.50cm × 12.50cm × 4.00cm, gross weight 1.200kg per unit
- Global door-to-door logistics via DHL, FedEx, UPS, air, or sea freight
- Real-time tracking provided for all shipments
- Minimum order quantity: 1 unit, supporting both emergency repairs and bulk OEM orders
Get Your SKF 3984/3920 Bearing Shipped Today
Don’t let bearing delays disrupt your production. Send your order details—including quantity and application requirements—to receive a formal quotation with traceability certificates within 24 hours. Our stock availability means you can reduce lead times and keep your machinery running. Contact us now to secure your SKF 3984/3920 tapered roller bearings.
Frequently Asked Questions
Q: Are these genuine SKF bearings?
A: Yes, we are an official SKF distributor. Every SKF 3984/3920 bearing comes with full traceability documentation and brand authorization certificates.
Q: How can I confirm this bearing fits my equipment?
A: Provide your equipment model or operating parameters (load, speed, temperature), and our SKF-certified technical team will verify compatibility at no cost.
Q: What is the warranty policy?
A: All SKF bearings are covered by the manufacturer’s warranty. We replace or refund any products with manufacturing defects.
Q: What is the minimum order quantity?
A: We accept orders for 1 unit, ideal for emergency repairs, with bulk pricing available for OEM production runs.
Q: How long does shipping take?
A: In-stock bearings ship within 3–7 business days. We offer express logistics options for urgent requirements.
Q: How can I verify
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