71913 CE/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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71913 CE/P4ADBA Bearing Product Overview & Core Advantages
The 71913 CE/P4ADBA is a metric precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This bearing features a duplex back-to-back (DB) arrangement with an extra light preload (Class A), making it ideal for applications requiring high rigidity and precise rotational accuracy. Its P4A tolerance class ensures superior dimensional and running accuracy, while the phenolic cage contributes to high-speed capability. This configuration is engineered to handle combined loads efficiently, providing reliable operation in high-precision machinery.
71913 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 71913: Basic bearing series and size designation (65mm bore, 90mm OD, 26mm width)
- C: 15° contact angle
- E: Optimized internal design for improved performance
- P4A: High precision tolerance class
- DB: Duplex Back-to-Back arrangement
- A: Extra light preload classification
71913 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and maintains shaft positioning accuracy. The extra light preload eliminates internal clearance while minimizing friction and heat generation.
Superior Load Capacity: With a 15° contact angle, this bearing optimally handles combined radial and axial loads. The dynamic load rating of 6075 lbf and static load rating of 5512 lbf ensure reliable performance under demanding operating conditions.
High-Speed Performance: The phenolic cage material provides excellent strength-to-weight ratio, enabling operation at limiting speeds up to 31,000 rpm. This makes the bearing suitable for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration.
71913 CE/P4ADBA Bearing Typical Application Areas
The 71913 CE/P4ADBA is specifically designed for high-precision applications including:
- Machine tool spindles and high-speed machining centers
- Precision grinding spindles and milling spindles
- High-frequency motor spindles
- Medical equipment requiring high rotational accuracy
- Aerospace positioning systems and instrumentation
- Robotic arm joints and precision automation equipment
