S71912 CB/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71912 CB/P4ADBB Bearing Product Overview & Core Advantages
The S71912 CB/P4ADBB is a precision duplex back-to-back angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This metric bearing features a light preload (Class B) and P4A tolerance class, making it ideal for high-speed spindles and precision machinery. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously while maintaining high running accuracy and dimensional stability under demanding conditions.
S71912 CB/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series
- 1912: Standard size designation (60mm bore, 85mm OD, 26mm width)
- CB: Duplex arrangement in Back-to-Back configuration
- P4A: High precision tolerance class exceeding ABEC 7 standards
- DBB: Duplex Back-to-Back preloaded pair
S71912 CB/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and maintains shaft positioning accuracy. The P4A tolerance class ensures minimal runout and vibration for superior performance.
Optimized Load Capacity: With a 15° contact angle and 30 chrome steel balls, this bearing delivers excellent performance under combined loading conditions. The radial dynamic load rating of 3780 lbf and static rating of 3960 lbf provide reliable operation in demanding applications.
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable operation at limiting speeds up to 32,500 rpm. The grease lubrication and sealed design ensure consistent performance throughout the temperature range of -30°C to 110°C.
Precision Engineering: Manufactured with chrome steel rings and balls, the bearing features tight dimensional tolerances (bore/OD: -0.004mm to 0) for precise fitment and reliable operation in precision applications.
S71912 CB/P4ADBB Bearing Typical Application Areas
The S71912 CB/P4ADBB is specifically designed for high-precision applications including:
- Machine tool spindles and high-speed machining centers
- Precision grinding spindles and milling applications
- High-frequency motor spindles requiring minimal runout
- Medical equipment and dental handpieces
- Aerospace positioning systems and instrumentation
- Semiconductor manufacturing equipment
