4308 ATN9
Double Row Deep Groove Ball Bearings
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4308 ATN9 Bearing Product Overview & Core Advantages
The 4308 ATN9 is a double row angular contact ball bearing designed for applications requiring high rigidity and reliable performance under combined loads. This precision bearing features an open design without seals, allowing for optimal lubrication management in controlled environments. With its double row construction, it provides superior radial load capacity and can accommodate significant axial loads in both directions. The bearing's ABEC-1 tolerance class ensures consistent performance in industrial applications where precision and reliability are essential.
Model Code Detailed Breakdown
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 4308 | Standard bearing designation indicating 40mm bore, 90mm OD, and 33mm width | Defines critical bearing dimensions for proper fit and application |
| A | Contact angle optimized for combined load applications | Enhanced axial load capacity while maintaining radial performance |
| TN9 | Nylon cage construction | Reduced friction, improved high-speed performance, and corrosion resistance |
4308 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row angular contact configuration provides exceptional stiffness, making this bearing ideal for applications requiring minimal deflection under heavy combined loads.
Superior Load Capacity: With a dynamic load rating of 12,578 lbf and static load rating of 10,125 lbf, this bearing delivers reliable performance in demanding conditions while handling both radial and bidirectional axial loads.
Optimized High-Speed Performance: The TN9 nylon cage reduces rotating mass and friction, enabling operation at limiting speeds up to 12,000 rpm while maintaining stability and precision.
Precision Engineering: Manufactured to ABEC-1 tolerance standards with controlled radial internal clearance (C0), ensuring consistent performance and extended service life in precision applications.
4308 ATN9 Bearing Typical Application Areas
Industrial Machinery: Gearboxes, conveyor systems, and material handling equipment requiring robust double row bearing performance
Power Transmission: Motor applications, pulley systems, and driveshafts where combined load capacity is critical
Agricultural Equipment: Implement drives, PTO shafts, and harvesting machinery demanding high reliability and load capacity
General Industrial Applications: Fans, blowers, and pumps operating at moderate to high speeds with significant radial and axial loads
