71916 CB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71916 CB/P4A Bearing Product Overview & Core Advantages
The 71916 CB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to accommodate combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its key advantages include high-speed capability facilitated by a phenolic cage and optimized internal geometry, and the availability of preload for enhanced system rigidity and rotational accuracy. This makes it an ideal component for high-performance, high-reliability systems.
71916 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | The basic bearing designation, indicating a high-precision, light-series angular contact ball bearing with an 80 mm bore, 110 mm OD, and 16 mm width. |
| C | Designates a 15° contact angle, optimized for high-speed applications requiring a balance between radial and axial load capacity. |
| B | Indicates that the bearing is supplied with a preload. This increases rigidity and minimizes axial and radial runout under operational conditions. |
| /P4A | Specifies the tolerance class P4 (ABEC-7). The 'A' suffix often denotes specific accuracy requirements for the bore and outside diameter tolerances, ensuring exceptional dimensional and running accuracy. |
71916 CB/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4 tolerance class standards with a 15° contact angle and factory-applied preload, this bearing delivers exceptional rotational accuracy and system stiffness, critical for minimizing deflection under load.
High-Speed Performance: The lightweight phenolic resin cage is instrumental in achieving a high limiting speed of 24,000 rpm. This cage material offers excellent strength-to-weight ratio and operates effectively with minimal lubrication.
Superior Load Capacity: The optimized internal design, including a ball quantity of 34 and a ball diameter of 6.747 mm, provides high dynamic and static load ratings, making it capable of handling demanding combined loads.
Material Integrity: Constructed from chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
71916 CB/P4A Bearing Typical Application Areas
The 71916 CB/P4A is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are paramount. Key application areas include:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- Robotic Arm Joints and Drives
- High-Speed Pumps and Compressors
