71919 ACB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71919 ACB/P4A Bearing Product Overview & Core Advantages
The 71919 ACB/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction and combined loads, this bearing features a P4 (ABEC-7) tolerance class for superior running accuracy. Its phenolic cage and optimized internal geometry contribute to stable operation at high speeds, making it an ideal component for demanding machinery where precision and reliability are paramount.
71919 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation (95mm bore, 130mm OD, 18mm width). |
| ACB | Specific internal design and contact angle (25° contact angle), optimized for high axial load capacity and rigidity. |
| P4A | Indicates a high-precision tolerance class (P4 / ABEC-7) with specific running accuracy requirements. |
71919 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, providing the stable and accurate rotation necessary for precision equipment.
- Optimized Load Capacity: The 25° contact angle is engineered to handle significant one-direction axial loads and combined (radial and axial) loads effectively.
- High-Speed Capability: The lightweight and robust phenolic resin cage guides the balls efficiently, reducing friction and centrifugal forces, which enables a high limiting speed of 18,000 rpm.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ensuring immediate installation and initial operation without the need for immediate re-lubrication.
71919 ACB/P4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications requiring high speed, accuracy, and rigidity. Typical uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Aerospace Control Systems
