71919 ACE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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71919 ACE/P4A Bearing Product Overview & Core Advantages
The 71919 ACE/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance under combined loads. Engineered to a P4 (ABEC-7) tolerance class, it offers exceptional running accuracy. Its key advantage lies in its ability to support significant radial loads and one-direction axial loads simultaneously, making it ideal for high-speed spindles and precision machinery where rigidity and minimal runout are critical.
71919 ACE/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). |
| ACE | Internal design code indicating a 25° contact angle and optimized internal geometry. |
| P4A | Denotes the tolerance class P4 (ABEC-7) with specific running accuracy requirements. |
71919 ACE/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4 tolerance standards, this bearing ensures minimal vibration and high positional accuracy. The 25° contact angle provides excellent axial load capacity and system stiffness.
Optimized for High-Speed Operation: The phenolic resin cage offers low weight and excellent performance at the high limiting speed of 19,000 rpm, reducing centrifugal forces and friction.
Superior Load Ratings: With a dynamic load rating of 6548 lbf and a static load rating of 5400 lbf, it reliably handles demanding combined radial and axial loads.
Premium Material Construction: Components made from chrome steel provide high hardness, wear resistance, and long service life under demanding conditions.
71919 ACE/P4A Bearing Typical Application Areas
The 71919 ACE/P4A is ideally suited for high-performance applications including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles in PCB drilling and routing equipment
- High-Frequency Motors and Electric Spindles
- Aerospace auxiliary systems and instrumentation
- Medical Equipment requiring high rotational accuracy
