71905 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71905 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 71905 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing supplied in a pre-lubricated and open configuration, it excels in handling combined loads with its 25° contact angle. Manufactured to P4A tolerance class with an extra light preload (Class A), this bearing delivers superior rotational accuracy, high-speed capability, and optimal performance in precision assemblies.
71905 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | Angular Contact Design with 25° contact angle | Optimized for combined radial and axial loads |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
| DGA | Universal Matchable (SU) designation | Flexible mounting arrangements in pairs |
71905 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with chrome steel rings and balls, ensuring exceptional dimensional stability and running accuracy for precision applications.
Optimized Load Capacity: The 25° contact angle design enables efficient handling of combined radial and axial loads, while the phenolic cage maintains stability at high speeds up to 53,000 rpm.
Universal Matching Capability: As an SU universal matchable bearing, it can be paired in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for rigidity and load distribution.
Thermal Stability: The phenolic cage material provides excellent dimensional stability across the operating temperature range of -30°C to 110°C, maintaining performance under thermal variations.
71905 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- Precision Instrumentation: Measuring equipment and optical devices
- High-Speed Motors: Spindle motors and high-frequency applications
- Medical Equipment: Dental handpieces and surgical tools
- Aerospace Components: Guidance systems and precision mechanisms
