71905 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71905 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71905 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This universal matchable (SU) bearing features an extra light preload (Class A) and is capable of handling combined radial and axial loads simultaneously. Its P4A tolerance class ensures superior dimensional stability and running accuracy, making it ideal for high-precision machinery and systems requiring minimal deflection under load.
71905 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 71905 | Basic bearing designation with 25mm bore diameter |
| CD | 15° contact angle design |
| P4A | High precision tolerance class |
| DGA | Universal matchable (SU) designation for paired mounting |
71905 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and minimal runout.
Optimized Load Capacity: The 15° contact angle and 18-ball configuration provide excellent combined load capacity, with a dynamic radial load rating of 2498 lbf and static radial load rating of 1800 lbf.
High-Speed Performance: The phenolic cage material and optimized internal geometry enable a limiting speed of 100,500 rpm, making it suitable for high-speed applications.
Universal Matching Capability: As an SU-type universal matchable bearing, it can be paired with another identical bearing without selective matching, simplifying installation and maintenance.
Temperature Stability: Operating temperature range from -30°C to 110°C ensures reliable performance across various environmental conditions.
71905 CD/P4ADGA Bearing Typical Application Areas
- Machine tool spindles and precision machining centers
- High-speed machining equipment and CNC routers
- Precision instruments and measuring devices
- Aerospace components and navigation systems
- Medical equipment requiring high rotational accuracy
- Robotics and automation systems with demanding precision requirements
