S71912 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71912 ACE/HCP4A Bearing Product Overview & Core Advantages
The S71912 ACE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to the exacting P4 (ABEC-7) tolerance class, this bearing excels at simultaneously handling combined radial and axial loads. Its compact design, featuring a 13 mm width, makes it ideal for space-constrained, high-speed spindles and precision instruments. The combination of a ceramic ball material and a phenolic cage contributes to superior high-speed performance, reduced weight, and extended service life.
S71912 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series with a 25° contact angle.
- 1912: Standard dimension series; 12 indicates a 60 mm bore diameter.
- ACE: Specific internal design featuring a 25° contact angle and optimized internal geometry for high stiffness and speed.
- HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride).
- P4: Identifies the tolerance class equivalent to ABEC-7, ensuring ultra-precise running accuracy.
- A: Indicates a specific preload level for enhanced rigidity and rotational accuracy.
S71912 ACE/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The single-row, angular contact design with a 25° contact angle provides high rigidity, enabling stable support for combined loads (radial and axial). The ceramic balls significantly increase the dynamic load rating (3442 lbf) and allow for higher operational speeds.
Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls reduce centrifugal forces, enabling a high limiting speed of 23,000 rpm. This makes the bearing an excellent choice for high-speed applications.
Precision and Longevity: Manufactured to a P4 tolerance class, the bearing ensures minimal runout and vibration. The hybrid ceramic construction offers superior resistance to wear and a longer operational life, especially in challenging environments.
S71912 ACE/HCP4A Bearing Typical Application Areas
The S71912 ACE/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Dental and Medical Handpieces
- Robotic Drives and Servo Motors
