S71915 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71915 ACB/HCP4A Bearing Product Overview & Core Advantages
The S71915 ACB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, ensuring superior running accuracy. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, high-speed capability facilitated by a phenolic cage and ceramic balls, and long-term reliability with factory-applied lubrication and sealing. This bearing is designed for high rigidity and is supplied with a preload for immediate, precise operation.
S71915 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series with specific internal design optimizations.
- 1915: Standard dimension series; 15 indicates a 75mm bore diameter.
- ACB: Angular Contact Bearing with a 25° contact angle.
- HCP4A: A combination suffix where HC denotes a Phenolic Resin Cage, P4 indicates a P4 (ABEC-7) tolerance class, and A signifies a 25° contact angle and that the bearing is supplied with a preload.
S71915 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to a P4 tolerance class with a controlled preload, this bearing delivers exceptional rotational accuracy and system stiffness, minimizing deflection under load.
- Superior Load Capacity: The 25° contact angle is optimized to efficiently handle significant combined radial and axial loads in one direction.
- Enhanced High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls reduce centrifugal forces, enabling a high limiting speed of 18,000 rpm. This combination also reduces operating temperature and wear.
- Reduced Maintenance & Long Service Life: As a sealed and lubricated unit, it is protected from contamination and is ready for installation, offering a long, maintenance-free service interval within its specified temperature range.
S71915 ACB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Instrumentation and Control Systems
