S71913 ACE/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71913 ACE/P4ADBC Bearing Product Overview & Core Advantages
The S71913 ACE/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement provides superior stiffness and moment load capacity, making it ideal for high-precision spindles and other critical machinery. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, while the sealed design and pre-lubrication offer reliable, long-term performance.
S71913 ACE/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1913 | Standard bore (65mm) and outside diameter (90mm) dimensions. |
| ACE | Specific internal design and contact angle (25°). |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| DBC | Indicates a Duplex Back-to-Back preloaded pair (2 bearings). |
S71913 ACE/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Moment Load Capacity: The duplex back-to-back arrangement creates a wide effective spread, significantly increasing system stiffness and resistance to moment loads, which is critical for maintaining precision under operational stresses.
Superior Precision: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, enabling smooth, high-accuracy rotation essential for high-speed applications.
Optimized High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, reduced heat generation, and a higher limiting speed (31,000 rpm).
Sealed & Pre-Lubricated: The integrated seals protect against contamination, and the factory-applied grease lubrication provides reliable operation within the specified temperature range (-30°C to 110°C), reducing maintenance needs.
S71913 ACE/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: Servo motors and high-frequency spindles.
- Industrial Robotics: Arm joints and precision gearboxes.
- Medical Equipment: High-speed dental handpieces and imaging scanners.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
