71822 ACD/P4DBA
71800 Series Super Precision Angular Contact Ball Bearings
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71822 ACD/P4DBA Bearing Product Overview & Core Advantages
The 71822 ACD/P4DBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This P4 tolerance class bearing features a back-to-back (DB) arrangement, enabling it to withstand combined radial and axial loads from both directions simultaneously. Its extra light preload (Class A) ensures minimal deflection under load, making it ideal for high-precision, high-rigidity systems such as machine tool spindles and precision instruments. The open design allows for custom lubrication schemes to optimize performance.
71822 ACD/P4DBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71822 | Basic bearing designation |
| AC | Angular Contact design |
| D | Duplex arrangement |
| P4 | High precision tolerance class |
| DB | Back-to-Back mounting configuration |
| A | Extra light preload |
71822 ACD/P4DBA Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains shaft positioning accuracy under combined loading conditions.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing delivers excellent performance for both radial and axial loads. The dynamic load rating of 10,980 lbf and static load rating of 17,212 lbf ensure reliable operation in demanding applications.
High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio and smooth operation at the limiting speed of 16,000 rpm, making it suitable for high-speed spindle applications.
Precision Performance: Manufactured to P4 tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0), this bearing ensures minimal runout and vibration for precision machining applications.
71822 ACD/P4DBA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision milling, grinding, and turning centers
- Precision Instrumentation - Measuring equipment and optical devices
- High-Speed Machining Centers - Where rigidity and accuracy are critical
- Robotic Systems - Precision positioning and motion control applications
- Medical Equipment - High-accuracy diagnostic and surgical devices
- Aerospace Components - Guidance systems and precision mechanisms
