71952 ACDGB/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 71952 ACDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with universal matching capability, it can be mounted in tandem, face-to-face, or back-to-back arrangements with other bearings of the same designation to create a preloaded bearing set. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other high-rigidity applications where minimal deflection under combined loads is critical.
71952 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 71952: Basic bearing series and size designation
- AC: Angular Contact design with a 25° contact angle
- D: High rigidity and optimized internal geometry
- GB: Universal Matchable bearing (can be paired in any combination)
- P4A: Superior precision tolerance class exceeding ABEC 7/ISO P4
Structural Features and Performance Benefits
This bearing's performance stems from its sophisticated engineering: The 25° contact angle provides optimal balance between radial and axial load capacity, enabling it to handle significant combined loads. The phenolic cage ensures stable operation at high speeds while reducing friction and weight. With a light preload (Class B), it delivers enhanced stiffness and precise rotational characteristics from startup. The chrome steel construction of both rings and balls ensures dimensional stability and long service life under demanding conditions. The bearing comes pre-lubricated for immediate operation within its specified temperature range of -30°C to 110°C.
71952 ACDGB/P4A Bearing Typical Application Areas
The 71952 ACDGB/P4A excels in precision applications requiring high speed and rigidity, including: Machine tool spindles, high-speed machining centers, precision grinding spindles, industrial pumps and compressors, and aerospace positioning systems. Its universal matching capability makes it particularly valuable in multi-bearing arrangements where consistent preload and alignment are essential for optimal performance.
