S71915 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
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S71915 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71915 ACDGA/HCP4A is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Its primary advantage lies in its ability to simultaneously support combined loads (radial and bidirectional axial loads) efficiently. Manufactured to a P4A tolerance class and featuring a phenolic cage with ceramic balls, this bearing is engineered for high-speed operation and superior performance in high-reliability scenarios. The compact design and universal matching capability further enhance its versatility for precision assemblies.
S71915 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series
- 1915: Standard size designation (75mm bore, 105mm OD, 16mm width)
- AC: Angular Contact design with a 25° contact angle
- D: Double row design
- GA: Specific internal clearance and preload designation (Extra light preload / Class A)
- HCP4A: P4A tolerance class (higher than ABEC 7 precision) with universal matching capability (SU)
S71915 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row configuration provides a rigid support system, significantly increasing the bearing's capacity to handle combined loads and moment loads compared to single row designs.
High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 28,000 rpm. This makes it an ideal high-speed bearing.
Precision and Longevity: Manufactured to a P4A tolerance class with a universal matchable (SU) designation, this bearing ensures precise shaft positioning and smooth operation. The standard grease lubrication and sealed design contribute to low maintenance and long service life.
S71915 ACDGA/HCP4A Bearing Typical Application Areas
The S71915 ACDGA/HCP4A is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Aerospace Actuators and Control Systems
