71906 ACDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71906 ACDGB/P4A Bearing Product Overview & Core Advantages
The 71906 ACDGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional rotational accuracy. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to support significant combined loads, handling both radial and axial forces efficiently. The light preload (Class B) minimizes deflection under operational stresses, making it ideal for high-speed applications where rigidity and precision are critical. Constructed from chrome steel with a phenolic cage, it offers reliable performance within a temperature range of -30°C to 110°C.
71906 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD, 9mm width) |
| AC | Angular Contact design with a 25° contact angle |
| DGB | Universal Matchable (SU) bearing, designed for duplex mounting in pairs |
| P4A | High precision tolerance class, superior to ABEC-7 standards |
71906 ACDGB/P4A Bearing Structural Features & Performance Benefits
Optimized Contact Design: The 25° contact angle provides an ideal balance between radial and axial load capacity, enabling efficient handling of combined loads in high-speed environments.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic cage and optimized internal geometry contribute to a limiting speed of 100,500 rpm, making it suitable for demanding rotational applications.
Superior Load Capacity: With a dynamic load rating of 1,521 lbf and static load rating of 968 lbf, this bearing delivers reliable performance under significant operational stresses.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired in duplex arrangements to create preloaded sets for enhanced system rigidity.
71906 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional accuracy
- High-Speed Motors: Electric motors and generators operating at elevated rotational speeds
- Precision Instruments: Medical equipment, measuring devices, and optical systems demanding minimal runout
- Aerospace Components: Guidance systems, actuators, and auxiliary power units where reliability is critical
- Robotics & Automation: Industrial robots, CNC systems, and precision positioning equipment
