71919 ACD/P4ADGC
71900 Series Super Precision Angular Contact Ball Bearings
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71919 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 71919 ACD/P4ADGC is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads (radial and axial) simultaneously. Its P4A tolerance class and moderate preload (Class C) ensure high running accuracy, excellent system stiffness, and superior performance in high-speed operations, making it ideal for high-reliability precision machinery.
71919 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation |
| AC | 25° contact angle |
| D | Moderate preload (Class C) |
| P4A | High-precision tolerance class (exceeding ABEC 7) |
| DGC | Universal matchable (SU) bearing pair, supplied lubricated |
71919 ACD/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design and moderate preload provide high system stiffness, enabling the bearing to handle significant combined radial and axial loads effectively. With a 25° contact angle, it offers an optimal balance between radial and axial load capacity.
Super-Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for maintaining precision in high-speed spindles.
High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 16,000 rpm, reducing centrifugal forces and operational temperatures.
Universal Matchability (SU): Supplied as a universal matchable pair, these bearings can be mounted in various configurations (back-to-back, face-to-face, or tandem) to suit specific application requirements for rigidity and thermal expansion management.
71919 ACD/P4ADGC Bearing Typical Application Areas
This super-precision bearing is ideally suited for applications where high rotational accuracy, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Machining Spindles
- Precision Grinding Equipment
- Industrial High-Speed Pumps & Compressors
- Advanced Robotics and Automation Systems
