71916 CDGD/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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Product Overview and Core Advantages
The 71916 CDGD/P4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As a single bearing with P4A tolerance class, it delivers superior running accuracy and dimensional stability. Its key advantage lies in its ability to handle high combined loads—significant radial and one-directional axial loads—thanks to its 15° contact angle and heavy preload (Class D). This configuration ensures minimal deflection under operational stresses, making it ideal for high-precision, high-rigidity systems. The phenolic cage and universal matchability further enhance its performance in complex arrangements.
71916 CDGD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 71916: Basic designation indicating a metric, angular contact ball bearing with 80mm bore, 110mm OD, and 16mm width
- C: 15° contact angle design
- D: Heavy preload classification
- G: Universal matching capability (can be paired with other bearings)
- D: Single bearing configuration
- P4A: High precision tolerance class exceeding ABEC 7 standards
Structural Features and Performance Benefits
High Rigidity and Load Capacity: The angular contact design with heavy preload provides exceptional stiffness, minimizing axial and radial play. With a dynamic load rating of 8190 lbf and static load rating of 8775 lbf, it reliably sustains demanding operational loads.
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring precise fitment and optimal performance in high-accuracy applications.
Optimized Component Design: The phenolic resin cage accommodates high rotational speeds while reducing friction and weight. With 27 precision balls of 9.525mm diameter manufactured from chrome steel, the bearing maintains consistent performance across its operating temperature range of -30°C to 110°C.
Universal Matching Capability: Designed as Universal Matchable (SU), this bearing can be paired with others in sets of three, allowing for customized preload configurations to meet specific application requirements.
71916 CDGD/P4A Bearing Typical Application Areas
The 71916 CDGD/P4A excels in applications demanding high precision, rigidity, and speed capabilities:
- Machine tool spindles requiring high rotational accuracy and minimal deflection
- Precision grinding equipment where dimensional stability is critical
- High-speed machining centers utilizing the 28,000 rpm limiting speed
- Industrial robotics and automation systems requiring precise motion control
- Aerospace positioning systems demanding reliable performance under combined loads
- Medical equipment requiring smooth, precise rotational movement
