71952 ACD/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
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71952 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 71952 ACD/P4ADBA is a super-precision duplex angular contact ball bearing designed for the most demanding applications. This P4A tolerance class bearing offers exceptional rotational accuracy and dimensional stability. Its back-to-back (DB) duplex arrangement enables it to withstand combined radial and axial loads from both directions, providing superior system rigidity and precise shaft positioning. Manufactured with phenolic cage and pre-lubricated, it is engineered for high-speed operation up to 4,500 rpm, making it an ideal choice for high-precision, high-reliability machinery.
71952 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 71952: Basic bearing designation indicating a super-precision angular contact bearing with 260mm bore, 360mm OD, and 92mm width.
- A: Denotes a 25° contact angle, optimized for high axial load capacity.
- CD: Indicates duplex configuration in back-to-back (DB) arrangement.
- P4A: Specifies super-precision tolerance class with enhanced running accuracy.
- DB: Confirms the back-to-back duplex mounting of the bearing set.
- A: Indicates extra light preload for minimal friction and optimal high-speed performance.
71952 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and maintains precise shaft alignment. With a dynamic load rating of 98,100 lbf and static load rating of 180,000 lbf, this bearing delivers exceptional performance under demanding operating conditions.
High-Speed Performance: Featuring a phenolic resin cage and optimized internal geometry, the bearing achieves a limiting speed of 4,500 rpm. The lightweight cage reduces centrifugal forces, while the 25° contact angle provides stable operation at high rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior machining quality and positioning accuracy.
Optimized Internal Design: With 29 high-precision chrome steel balls of 30.162mm diameter arranged in a precise configuration, the bearing distributes loads evenly for extended service life and consistent performance.
71952 ACD/P4ADBA Bearing Typical Application Areas
The 71952 ACD/P4ADBA excels in applications requiring ultra-high precision and rigidity:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Gearboxes: Industrial transmission systems requiring minimal deflection
- Aerospace Components: Flight control systems and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical tools
- Semiconductor Manufacturing: Wafer processing equipment and precision positioning stages
- Robotics: High-accuracy robotic arms and automation systems
