S71914 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The S71914 ACDGB/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a universal matchable bearing supplied in sets of two, it can be arranged in tandem, back-to-back, or face-to-face configurations to achieve optimal stiffness and load management. Its primary characteristics include the ability to handle combined loads (radial and axial) simultaneously, a light preload (Class B) for reduced noise and vibration, and a P4A tolerance class ensuring ultra-precise running accuracy. This makes it an ideal solution for high-reliability, high-rotation accuracy applications.
S71914 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing series. |
| 7 | Indicates an angular contact design. |
| 1914 | Specifies the bore diameter (70mm) and series dimensions. |
| AC | Angular Contact with a 25° contact angle. |
| DGB | Universal Matchable (SU) designation, supplied as a set of two bearings for duplex mounting. |
| P4A | Denotes a very high tolerance class superior to ABEC 7, ensuring extremely tight dimensional and running accuracy. |
Structural Features and Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and the capability for duplex mounting provides high axial and radial stiffness, enabling the bearing to effectively support combined loads.
High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at the high limiting speed of 28,000 rpm. The optimized internal geometry further enhances high-speed capability.
Precision and Low Vibration: Manufactured to a P4A tolerance class and featuring a light preload, this bearing ensures minimal runout and smooth, quiet operation, which is critical for precision applications.
Sealed and Lubricated for Life: The sealed design protects against contamination. Pre-lubricated with grease, it is ready for installation and offers reliable performance within its specified temperature range of -30°C to 110°C.
S71914 ACDGB/P4A Bearing Typical Application Areas
The S71914 ACDGB/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- Aerospace Instrumentation and Control Systems
