71916 ACE/P4ADBB
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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71916 ACE/P4ADBB Bearing Product Overview & Core Advantages
The 71916 ACE/P4ADBB is a metric precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set delivers superior stability under combined loads, efficiently handling both radial and axial forces. Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. The phenolic cage and light preload (Class B) contribute to smooth operation at the specified limiting speed of 17,000 rpm.
71916 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- 71916: Basic bearing designation (80mm bore, 110mm OD, 32mm width)
- ACE: Specific internal design featuring a 25° contact angle and optimized internal geometry
- P4A: Super-precision tolerance class exceeding ABEC 7 standards
- DB: Duplex Back-to-Back arrangement providing high moment stiffness
- B: Light preload classification for optimal performance in high-speed applications
71916 ACE/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system capable of withstanding combined radial and axial loads as well as moment loads. With a dynamic load rating of 7898 lbf and static load rating of 7538 lbf, this bearing delivers reliable performance in demanding applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration. The 25° contact angle provides optimal load distribution for both radial and axial forces.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at the limiting speed of 17,000 rpm. The light preload (Class B) minimizes friction while maintaining system stability.
Premium Materials: Constructed from chrome steel for both rings and balls (9.525mm diameter, 24 balls), this bearing delivers durability and consistent performance across the operating temperature range of -30°C to 110°C.
71916 ACE/P4ADBB Bearing Typical Application Areas
This precision bearing is specifically engineered for applications requiring high rotational accuracy and stiffness:
- Machine tool spindles for milling, grinding, and turning centers
- High-speed machining centers and precision manufacturing equipment
- Industrial pumps and compressors requiring precise shaft positioning
- Robotic arm joints and precision motion control systems
- Aerospace positioning systems and navigation equipment
- Medical imaging devices and laboratory instrumentation
