S71913 ACB/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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S71913 ACB/HCP4ADT Bearing Product Overview & Core Advantages
The S71913 ACB/HCP4ADT is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) matched set features two bearings pre-loaded to deliver superior high rigidity and handle significant combined loads. Manufactured to a P4A tolerance class and utilizing ceramic balls, it is engineered for high-speed operation and extended service life in precision machinery.
S71913 ACB/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-precision bearing series |
| 1913 | Standard dimension series (65mm bore, 90mm OD, 26mm width) |
| ACB | 25° contact angle, duplex tandem arrangement |
| HC | Hybrid ceramic balls (Silicon Nitride) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DT | Duplex Tandem mounting (two bearings matched for axial load capacity in one direction) |
S71913 ACB/HCP4ADT Bearing Structural Features & Performance Benefits
Superior Rigidity & Load Capacity: The duplex tandem arrangement of two pre-loaded bearings creates an exceptionally stiff assembly, capable of handling high combined radial and axial loads in one direction. The 25° contact angle is optimized for axial load carrying capacity.
High-Speed & Thermal Performance: The combination of ceramic balls and a phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 31,000 rpm. This hybrid construction also provides superior performance under thermal expansion and is suitable for a wide temperature range from -30°C to 110°C.
Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for ultra-precise applications. The sealed design with pre-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation.
S71913 ACB/HCP4ADT Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where speed, accuracy, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and flight control mechanisms.
- High-Frequency Motors & Spindles: PCB drilling spindles and dental handpieces.
