Description
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 Suitability
| Industry | Typical Applications |
|---|---|
| Machine Tool | CNC Machine Tool Spindle |
Challenges in CNC Spindle Performance? The Right Bearing Makes a Difference
CNC machine operators often face unexpected downtime due to bearing failures, especially in high-precision spindle applications. Mismatched bearing precision or poor material quality can lead to vibration, reduced tool life, and costly production delays. Sourcing reliable angular contact bearings that meet exact specifications can be time-consuming when dealing with multiple suppliers.
Engineered for CNC Spindle Reliability
The High Precision Double Row Angular Contact Ball Bearing 3304-a addresses these challenges with its double row structure and precision ratings from P0 to P6, ensuring stable performance in CNC machine tool spindles. Our extensive network covers both international and domestic brands, allowing us to source the exact SKF 3304-a or equivalent bearings you need, backed by ISO 9001 certified quality control processes.
Optimal Performance in High-Speed Spindle Environments
This angular contact ball bearing excels in environments with combined radial and axial loads, common in CNC spindle operations. Its separated design allows for easy mounting and adjustment, while the steel, copper, or nylon cage options accommodate different speed requirements. Operating temperatures compatible with standard oil grease lubrication make it suitable for continuous-duty machining centers.
Key Engineering Features for Spindle Applications
The bearing’s double row configuration provides higher radial load capacity compared to single row designs, critical for maintaining spindle rigidity during heavy cutting. Precision ratings up to P2 ensure minimal runout, directly impacting machining accuracy. Bearing steel construction offers excellent wear resistance, while the choice of cage materials allows optimization for speed—nylon cages reduce friction at higher RPMs, while steel cages handle higher temperatures.
Total Cost Impact of Bearing Selection
Choosing the right double row angular contact bearing reduces long-term costs by minimizing unplanned downtime and extending maintenance intervals. A precision P4 rated bearing may have a higher initial cost than a P0, but its tighter tolerances reduce vibration-induced tool wear by up to 30% in high-speed applications. Proper lubrication with oil grease, as supported by this bearing’s design, further extends service life, lowering the total cost of ownership.
Quality Assurance You Can Trust
Our bearings undergo rigorous dimensional and hardness testing before shipment, ensuring compliance with industry standards. We provide a warranty against manufacturing defects, with clear traceability for each batch. As a global supplier, we maintain sufficient inventory to meet urgent delivery needs, supporting both scheduled maintenance and emergency replacements.
Packaging & Shipping
- Standard packaging: Carton and pallet for secure transportation
- Expedited shipping available for urgent orders
- Flexible logistics options: Express courier, air freight, or sea freight
- Low minimum order quantity supported for trial installations
Get Your Bearing Quote Today
Whether you need the SKF 3304-a or equivalent high precision double row angular contact ball bearing, provide your required quantity and delivery location, and we’ll deliver a competitive quote with lead time. Our technical team can also assist with cross-referencing part numbers to ensure compatibility with your CNC machine spindle.
Frequently Asked Questions
Q: Do you supply bearings from other brands besides SKF?
A: Yes, we offer a full range of international brands including NSK, NTN, Koyo, NACHI, IKO, FAG, Timken, as well as domestic Chinese brands, and can source according to your specific brand requirements.
Q: How can I confirm if this bearing fits my CNC spindle?
A: Provide your spindle model or the bearing dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the 3304-a specification.
Q: What is your warranty policy for bearings?
A: We provide a warranty against manufacturing defects. The warranty period and terms are specified in each order contract, and defective products can be replaced or returned under the agreed conditions.
Q: What is the minimum order quantity for this bearing?
A: We support low minimum order quantities, including small batch purchases for trial or maintenance needs. Contact us with your specific requirements for details.
Q: How long does it take to ship the bearings?
A: Stock items are shipped within 1-3 business days. For non-stock or large quantities, lead time is typically 7-15 days, depending on production and logistics.
Q: Can you provide OEM or ODM services for bearings?
A: Yes, we support custom bearing production according to your drawings, specifications, or samples, including special materials, precision grades, and packaging requirements.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
