71952 ACD/HCP4ATBTA
Hybrid Ceramic Super Precision 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 ACD/HCP4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back (TBT) matched set configuration provides superior stability and load-handling capabilities. Its core advantages include the ability to withstand combined radial and axial loads simultaneously, thanks to the 25° contact angle, and outstanding performance in high-speed operations up to 4,500 rpm. Manufactured to P4A tolerance class with ceramic balls and a phenolic cage, this bearing set delivers maximum reliability and longevity in precision machinery.
71952 ACD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
- 71952: Basic bearing series and size designation
- ACD: Angular Contact Design with 25° contact angle
- HC: Hybrid Ceramic (steel rings with ceramic balls)
- P4A: Ultra-precision tolerance class
- TBT: Triplex Back-to-Back matched arrangement
- A: Extra light preload classification
Structural Features and Performance Benefits
Enhanced Rigidity and Load Capacity: The triplex back-to-back configuration creates an exceptionally rigid bearing system capable of handling combined loads with radial dynamic load rating of 128,700 lbf and static rating of 270,000 lbf.
High-Speed Performance: The combination of ceramic balls and phenolic cage enables superior high-speed operation up to 4,500 rpm, reducing centrifugal forces and operating temperatures.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0) ensures optimal running accuracy and minimal vibration.
Thermal Stability: The hybrid ceramic construction provides excellent thermal stability across the operating temperature range of -30°C to 110°C.
71952 ACD/HCP4ATBTA Bearing Typical Application Areas
This precision bearing set is ideally suited for:
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and CNC equipment
- Precision grinding spindles and milling applications
- Aerospace positioning systems and robotics
- Medical equipment requiring ultra-precise rotational accuracy
- Semiconductor manufacturing equipment with demanding speed and accuracy requirements
