71915 ACD/P4A
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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71915 ACD/P4A Bearing Product Overview & Core Advantages
The 71915 ACD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and excellent dynamic performance. Manufactured to P4 (ABEC-7) tolerance class, this bearing delivers exceptional running accuracy and dimensional stability. Its key advantage lies in its ability to handle combined radial and axial loads simultaneously, making it ideal for high-speed applications where rigidity and precision are critical. The phenolic cage and optimized contact angle contribute to superior performance in demanding operational conditions.
71915 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing designation (75mm bore, 105mm OD) |
| AC | Angular Contact design with 25° contact angle |
| D | High load capacity internal design |
| P4A | P4 precision class with specific tolerance requirements |
71915 ACD/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance class with tight dimensional control (bore tolerance: -0.007mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Contact Angle: The 25° contact angle provides excellent axial load capacity while maintaining good radial load performance, making it suitable for combined loading conditions.
Advanced Cage Design: The phenolic cage offers superior strength-to-weight ratio, reduced friction, and excellent performance at high speeds up to 17,000 rpm.
Superior Material Quality: Chrome steel rings and balls provide high hardness, wear resistance, and long service life under demanding operating conditions.
Preload Capability: Designed to accommodate preload for enhanced stiffness and rotational accuracy in precision applications.
71915 ACD/P4A Bearing Typical Application Areas
The 71915 ACD/P4A is specifically engineered for high-performance applications including:
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and CNC equipment
- Precision grinding spindles and dental equipment
- Aerospace components and navigation systems
- Robotic joints and automation equipment
- Medical imaging devices and laboratory equipment
