Product Specifications
| Parameter |
Details |
| Model Designation |
3309-TN9 |
| Bearing Type |
Double Row Angular Contact Ball Bearing |
| Rows Number |
Double |
| Load Direction |
Radial |
| Material |
Bearing Steel |
| Precision Rating |
P0, P2, P4, P5, P6 |
| Structure |
Angular Contact |
| Cage Material |
Nylon Cage, Steel Cage, Copper Cage |
| Lubrication |
Oil Grease |
| Separated |
Separated |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Printing Equipment, Reducers |
| Automotive |
Transmission Systems, Electric Motors |
| Agricultural Machinery |
Tractors, Harvesters |
| New Energy |
Wind Turbines, Solar Equipment |
Eliminate Downtime with Heavy Duty Double Row Angular Contact Ball Bearing 3309-TN9
Industrial machinery operators know the cost of unexpected bearing failure—hours of production loss, maintenance overtime, and cascading damage to connected components. When standard bearings can’t handle radial loads in high-speed applications, replacing them becomes a recurring headache. Sourcing reliable, precision-engineered bearings with flexible order options often feels like navigating a maze of generic suppliers.
Engineered for Heavy Loads, Built for Reliability
Our Heavy Duty Double Row Angular Contact Ball Bearing 3309-TN9 addresses these challenges head-on. Designed with a nylon cage for reduced friction and enhanced durability, this bearing delivers stable performance in industrial machinery like gearboxes and printing equipment. With precision grades from P0 to P4 and noise grades up to Z4, it meets the strict standards required for continuous operation in demanding environments. Backed by our one-stop service model, we handle everything from R&D to global delivery, ensuring you get the right bearing when you need it.
Optimal Performance in Critical Industrial Applications
This double row angular contact bearing excels in applications where radial load capacity and precision are non-negotiable. Whether installed in machine tool spindles, agricultural equipment reducers, or new energy wind turbines, it maintains consistent rotation under heavy loads. The separated design allows for easy mounting and dismounting, simplifying maintenance and minimizing downtime. Its ability to operate efficiently across a range of speeds makes it a versatile solution for diverse industrial needs.
Technical Features That Drive Performance
The 3309-TN9’s performance is defined by key engineering details. The double row angular contact structure distributes radial loads evenly, extending service life compared to single row alternatives. Nylon cage material reduces vibration and noise while improving lubrication retention, critical for high-speed operations. Precision ratings from P0 to P4 ensure tight dimensional tolerance, reducing shaft runout and enhancing overall machine accuracy. Combined with high-grade bearing steel construction, these features deliver the stability required for continuous industrial use.
Why Compromising on Bearings Costs More in the Long Run
Choosing inferior bearings may save upfront costs, but the hidden expenses add up quickly. Counterfeit or low-quality alternatives often fail prematurely, leading to unplanned shutdowns and costly repairs. Our Heavy Duty Angular Contact Ball Bearing 3309-TN9 is manufactured under strict ISO 9001:2015 quality control, with full-process production supervision and comprehensive performance testing. Every unit meets international standards (ISO, ABMA, DIN), ensuring reliability that reduces total cost of ownership by minimizing replacement frequency and downtime.
Decades of Expertise You Can Trust
With over 18 years of bearing manufacturing and export experience, Jinan Saifan Bearing Co., Ltd stands behind every product. Our factory features advanced precision processing equipment and an in-house laboratory conducting dimensional detection, noise & vibration tests, and service life experiments. We hold ISO 14001 environmental certification and high-tech enterprise qualification, demonstrating our commitment to quality and sustainability. Our professional technical team provides free guidance on selection, installation, and maintenance, ensuring you maximize bearing performance. We’ve served clients in Europe, North America, Southeast Asia, and the Middle East, building a reputation for consistent supply and responsive support.
Packaging & Shipping
- Carton and pallet packaging for secure transportation
- Sample orders shipped within 3-5 working days
- Bulk orders delivered in 5-15 working days
- Flexible shipping options including express, air, and sea freight
- 1 piece MOQ for standard bearings, supporting emergency repairs
Get Your 3309-TN9 Bearing Today
Don’t let bearing issues slow down your operation. Whether you need a single replacement or bulk order, our Heavy Duty Double Row Angular Contact Ball Bearing 3309-TN9 is ready to ship. Send us your specifications, and our team will confirm compatibility and provide a quote within 24 hours. Keep your machinery running with reliable bearings from a trusted partner.
Frequently Asked Questions
Q: Is this bearing genuine and traceable?
A: Yes, all our bearings are manufactured in our ISO 9001:2015 certified facility and come with full traceability documentation. We also supply genuine NSK, INA, and other brand bearings with authentic verification.
Q: How do I confirm if the 3309-TN9 fits my equipment?
A: Provide your equipment model, application conditions, and required load capacity. Our technical team will conduct free compatibility checks and recommend the optimal bearing solution.
Q: What is the warranty policy?
A: We offer a 12-month warranty from the date of delivery. Qualified defective products are eligible for free replacement or refund.
Q: What is the minimum order quantity?
A: Standard bearings like the 3309-TN9 have a 1 piece MOQ. Customized orders have negotiable quantities to meet your specific needs.
Q: How quickly can I receive my order?
A: Sample orders ship in 3-5 working days, while bulk orders take 5-15 working days. We provide real-time logistics tracking for all shipments.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
