S71913 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71913 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The S71913 ACE/HCP4ADT is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This duplex tandem (DT) arrangement combines two bearings to deliver superior axial load capacity in one direction, making it ideal for high-rigidity spindle systems. Manufactured to P4A tolerance class with a 25° contact angle and ceramic balls, it offers enhanced speed capability, reduced heat generation, and extended service life in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71913 | Basic bearing designation (65mm bore, 90mm OD, 26mm width) |
| ACE | 25° contact angle, enhanced internal design |
| HC | Hybrid ceramic balls (silicon nitride) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DT | Duplex Tandem arrangement (two bearings matched for maximum axial capacity) |
S71913 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (31,000 rpm) and longer service life compared to all-steel bearings.
Duplex Tandem Design: The preloaded matched set arrangement provides exceptional stiffness and unidirectional axial load capacity, making it suitable for applications requiring minimal deflection under heavy loads.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring consistent high-precision performance in demanding applications.
Phenolic Cage: The phenolic resin cage offers excellent strength-to-weight ratio, reduced centrifugal forces, and compatibility with high-speed operation, contributing to the bearing's outstanding high-speed performance.
S71913 ACE/HCP4ADT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Instrumentation: Measuring equipment, optical scanners, and laboratory instruments
- High-Speed Motors: CNC spindle motors, high-frequency motors, and servo drives
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
