7210 ACD/P4AQBTA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7210 ACD/P4AQBTA Bearing Product Overview & Core Advantages
The 7210 ACD/P4AQBTA is a precision angular contact ball bearing specifically engineered for demanding applications requiring exceptional rigidity and load capacity. This quadruplex tandem back-to-back (QBT) matched set delivers superior performance in handling combined loads, making it ideal for high-precision machinery. Its P4A tolerance class ensures exceptional running accuracy, while the phenolic cage and optimized design contribute to outstanding high-speed capabilities. This configuration is preloaded for maximum system stiffness and is supplied lubricated for immediate operation.
7210 ACD/P4AQBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7210 | Basic Bearing Size | Standard designation for 50mm bore, 90mm OD, 80mm width |
| ACD | 25° Contact Angle Design | Optimized for axial load capacity and high-speed operation |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for precision applications |
| QBT | Quadruplex Tandem Back-to-Back | Four bearings matched in tandem back-to-back arrangement for maximum rigidity |
7210 ACD/P4AQBTA Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The quadruplex tandem back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads while maintaining precise shaft positioning. This arrangement provides superior moment load capacity compared to single bearing arrangements.
High-Speed Performance: Featuring a phenolic cage and optimized internal geometry, this bearing achieves excellent high-speed characteristics with a limiting speed of 46,000 rpm. The 25° contact angle balances axial and radial load capacity while maintaining stable operation at elevated speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for applications demanding the highest levels of accuracy.
Optimized Load Distribution: With 15 chrome steel balls of 12.7mm diameter arranged in a precise configuration, the bearing delivers excellent load rating performance (dynamic: 25,200 lbf, static: 29,025 lbf) across all four bearing positions.
7210 ACD/P4AQBTA Bearing Typical Application Areas
The 7210 ACD/P4AQBTA is specifically designed for high-performance applications requiring extreme precision and rigidity:
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Precision Robotics: High-accuracy robotic arms and positioning systems
- Aerospace Systems: Aircraft fuel pumps and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical tools
- Industrial Pumps & Compressors: High-performance centrifugal pumps and compressor systems
