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 |
| Specification |
As Your Request |
| Trademark |
SKF |
| Origin |
Jiangsu China |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Manufacturing |
CNC Machine Tools, Automation Production Lines, Spindles |
| Industrial Machinery |
Robotics, Precision Conveyors, Gearboxes |
| Automation |
Assembly Machines, Material Handling Systems |
Minimize CNC Downtime with High Precision Double Row Angular Contact Ball Bearing 3304-a
CNC machine operators know the cost of unexpected downtime—missed production deadlines, increased maintenance expenses, and disrupted workflows. When angular contact bearings fail prematurely due to poor precision or material quality, the impact ripples through the entire automation line. Sourcing reliable bearings that balance high load capacity with tight tolerance control often means navigating complex MOQ requirements and long lead times, leaving little room for emergency replacements.
Engineered for CNC Machine Stability and Long Service Life
Our High Precision Double Row Angular Contact Ball Bearing 3304-a addresses these challenges head-on. With precision ratings from P0 to P4 and noise grades up to Z4, this bearing delivers consistent performance in high-speed CNC spindles and automation line components. Manufactured using premium bearing steel and advanced processing equipment, it meets ISO and ABMA standards, ensuring compatibility with critical machine tools. Whether you need a single replacement unit or bulk orders for production lines, our flexible 1-piece MOQ for standard bearings eliminates inventory pressure.
Optimal Performance in High-Speed, Heavy-Load CNC Environments
This double row angular contact bearing excels in applications requiring simultaneous radial and axial load handling, such as CNC machine spindles operating at high rotational speeds. Its separated structure allows for easy mounting and adjustment, while the angular contact design ensures minimal axial play—critical for maintaining machining accuracy. The combination of steel, copper, or nylon cages provides versatility across operating conditions, from dry machining environments to lubricated industrial settings, ensuring stable rotation even under variable loads.
Key Technical Features That Matter for CNC Precision
Precision rating directly impacts machining quality: P4 grade bearings reduce runout to microns, ensuring tight tolerances in precision cutting operations. The double row configuration increases radial load capacity by up to 40% compared to single row designs, making it suitable for heavy-duty automation lines. Cage material selection plays a critical role—steel cages offer durability at high temperatures, while nylon cages reduce friction and noise in high-speed applications. Lubricated with high-performance grease, this bearing maintains consistent operation across a wide temperature range, minimizing maintenance intervals and extending service life in continuous production environments.
Why Genuine Precision Bearings Lower Total Cost of Ownership
Choosing non-genuine bearings may seem cost-effective initially, but the hidden expenses add up quickly. Early failure due to substandard materials can cause spindle damage, leading to repair costs that exceed the price of ten genuine bearings. Our strict quality control—including incoming raw material inspection and full-process production supervision—ensures each bearing meets performance standards. With a 12-month warranty and free replacement for qualified defects, we stand behind the reliability of our products, reducing unplanned downtime and lowering long-term operational costs for CNC manufacturers.
Our Commitment to Reliable Bearing Supply
With over 15 years of bearing manufacturing and export experience, we serve industrial buyers across Europe, North America, and Southeast Asia. Our ISO 9001:2015 certified quality management system ensures consistent production standards, while our in-house laboratory conducts dimensional, noise, and life tests to validate performance. We support OEM/ODM customization to meet specific CNC machine requirements, with sample orders available in 3-5 working days and bulk deliveries in 5-15 days. Our technical team provides free guidance on bearing selection and installation, helping you optimize spindle performance and reduce maintenance needs.
Packaging & Shipping
- Protective carton packaging with pallet reinforcement for bulk orders
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Flexible logistics options: DHL, FedEx, UPS, air freight, and sea freight
- Real-time tracking number provided upon shipment
- 1 piece MOQ for standard bearings, ideal for emergency repairs and small-batch requirements
Get Your CNC Bearings Shipped Fast
Don’t let bearing issues slow down your production line. Whether you need a replacement 3304-a bearing for a CNC spindle or bulk orders for an automation project, we have the inventory and expertise to meet your needs. Send us your bearing specifications, application details, and quantity, and our team will provide a quote within 24 hours—so you can get back to precise, uninterrupted manufacturing.
Frequently Asked Questions
Q: Is this bearing a genuine original product?
A: Yes, we supply genuine original brand bearings, including SKF, with full traceability and authenticity guarantees.
Q: How can I confirm if the 3304-a bearing fits my CNC machine?
A: Provide your machine model, spindle specifications, or load requirements, and our technical team will verify compatibility and recommend the optimal precision grade.
Q: What is the warranty policy for this bearing?
A: We offer a 12-month warranty from the date of receipt, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity for the 3304-a bearing?
A: Standard bearings have a 1-piece MOQ, supporting both emergency repairs and small-batch orders.
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, with global logistics options for fast delivery.
Q: How do you ensure bearing quality before shipment?
A: All products undergo strict finished product inspection, including dimensional and performance testing, to ensure consistent quality before delivery.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
