S71913 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71913 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71913 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This sealed bearing features a universal matchable (SU) design, allowing bearings to be mounted in tandem, back-to-back, or face-to-face arrangements to optimize performance for specific load conditions. Its core advantages include the ability to accommodate combined loads (radial and axial), superior high-speed capability facilitated by a phenolic cage and ceramic balls, and long service life due to its sealed, pre-lubricated construction. With a P4A tolerance class and an extra light preload (Class A), it delivers the high rigidity and running accuracy essential for precision machinery.
Model Code In-Depth Analysis
- S7: High-precision bearing series with a 25° contact angle.
- 1913: Standardized size designation; 65mm bore, 90mm OD, 13mm width.
- ACD: Angular Contact, 25° contact angle, Universal Matchable (SU) design.
- GA: Axial internal clearance / preload designation (Extra light / Class A).
- HCP4A: High-Precision Tolerance Class P4A, with enhanced dimensional and running accuracy.
S71913 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and superior rotational accuracy. The extra light preload (Class A) eliminates internal clearance, providing high system rigidity and precise shaft positioning.
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and ceramic balls significantly reduces centrifugal forces, enabling stable operation at limiting speeds up to 31,000 rpm. This design minimizes friction and heat generation.
Enhanced Load Capacity: The 25° contact angle and optimized internal geometry allow it to handle significant combined radial and axial loads simultaneously.
Maintenance-Free Operation: The integral seals retain the factory-applied grease lubrication and effectively exclude contaminants, ensuring long-term, reliable performance within a temperature range of -30°C to 110°C.
S71913 ACDGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where speed, accuracy, and rigidity are critical. Typical uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
