71944 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71944 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 pre-lubricated pairs, it delivers superior performance in handling combined loads including radial and axial forces. Manufactured to P4A tolerance class with an extra light preload (Class A), this bearing ensures minimal vibration and optimal rotational precision. Its high-rigidity design makes it ideal for high-speed machinery requiring stable operation under demanding conditions.
71944 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71944 | Basic bearing designation | Standard metric size identification |
| ACD | 25° contact angle, universal matchable design | Optimized for combined load capacity and universal mounting flexibility |
| P4A | High precision tolerance class | Exceptional running accuracy and reduced vibration |
| DGA | Preloaded pair, universal match arrangement | Simplified installation and optimized bearing performance in matched sets |
Structural Features and Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
Optimized Load Capacity: The 25° contact angle and double-row design provide superior combined load handling with dynamic radial load rating of 76,050 lbf and static radial load rating of 128,250 lbf.
High-Speed Performance: Featuring a phenolic cage and optimized internal geometry, the bearing achieves a limiting speed of 11,000 rpm while maintaining stability.
Universal Matching Capability: As a universal matchable (SU) bearing supplied in pre-lubricated pairs, it enables flexible mounting arrangements without requiring selective assembly.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability across the operating temperature range of -30°C to 110°C.
71944 ACD/P4ADGA Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and precision grinding equipment
- Industrial pumps and compressors demanding reliable performance
- Precision instrumentation and measuring equipment
- Aerospace components and specialized industrial machinery
- Robotics and automation systems requiring accurate positioning
