71914 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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71914 ACD/P4A Bearing Product Overview & Core Advantages
The 71914 ACD/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and exceptional rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is engineered to handle significant combined loads, accommodating both radial and unidirectional axial loads simultaneously. Its key advantages include a high limiting speed and the availability of preload, which ensures high system rigidity and minimal runout, making it ideal for high-speed, high-reliability spindles and precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing designation, indicating a high-precision, single-row angular contact ball bearing with a 70mm bore, 100mm OD, and 16mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high internal capacity design. |
| P4A | Indicates the P4 (ABEC-7) tolerance class and specific internal running accuracy requirements. |
71914 ACD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with a 25° contact angle and available preload, this bearing provides superior rotational accuracy and system stiffness, critical for minimizing deflection under load.
- Optimized for High Speeds: The phenolic resin cage offers low weight and excellent sliding properties, contributing to the high limiting speed of 18,000 rpm. This makes it a true high-speed bearing.
- High Load Capacity: The design is optimized to handle substantial combined loads (radial and axial), with a dynamic and static load rating of 7312 lbf.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational life.
- Standard Lubrication: The bearing comes lubricated for immediate use, suitable for its specified temperature range of -30°C to 110°C.
71914 ACD/P4A Bearing Typical Application Areas
The 71914 ACD/P4A is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Aerospace Control Systems
- Medical and Dental Handpieces
