S71914 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71914 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The S71914 ACE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring high speed, rigidity, and accuracy. This duplex tandem (DT) matched set combines two bearings to deliver superior axial load capacity in one direction. Its construction with ceramic balls and a P4A tolerance class ensures exceptional rotational accuracy and low heat generation, making it ideal for high-performance spindles and precision machinery where reliability is critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71914 | Basic bearing designation (70mm bore, 100mm OD, 32mm width) |
| ACE | Specific internal design and contact angle (25°) |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DT | Duplex Tandem mounting arrangement for maximum axial load capacity |
S71914 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of silicon nitride ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (28,000 rpm) and longer service life compared to all-steel bearings.
Duplex Tandem Preload: As a factory-matched duplex tandem set, these bearings are preloaded to provide maximum stiffness and axial load capacity in one direction, eliminating the need for complex on-site adjustment.
Phenolic Cage & Sealed Design: The phenolic resin cage offers excellent strength at high speeds with minimal friction. The sealed construction retains factory-applied grease, protecting against contamination and providing maintenance-free operation within the specified temperature range (-30°C to 110°C).
High Precision (P4A): The P4A tolerance class ensures extremely tight dimensional and running accuracy, which is critical for applications requiring minimal runout and vibration.
S71914 ACE/HCP4ADT Bearing Typical Application Areas
- High-Speed Machine Tool Spindles for milling, grinding, and drilling
- Precision CNC Machining Centers
- High-Frequency Motors and Spindles
- Medical and Dental Equipment spindles
- Aerospace Test Equipment and precision instrumentation
