71907 CD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71907 CD/HCP4ADT Bearing Product Overview & Core Advantages
The 71907 CD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) matched set features two bearings preloaded against each other, delivering superior high rigidity and axial stiffness. Manufactured to P4A tolerance class with a 15° contact angle and ceramic balls, it is engineered for high-speed operation and can handle significant combined radial and axial loads. Its compact design and pre-lubrication make it an ideal, ready-to-install solution for high-reliability machinery.
71907 CD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing designation (35mm bore, 55mm OD, 20mm width) |
| C | 15° contact angle design |
| D | Duplex Tandem (DT) arrangement |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | High precision tolerance class (superior to ABEC 7) |
71907 CD/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement provides preloaded axial stiffness, enabling the bearing set to handle significant combined loads with minimal deflection. This configuration is optimized for applications requiring precise shaft positioning.
High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic cage (lightweight with excellent tribological properties) enables operation at limiting speeds up to 56,000 rpm. The 15° contact angle further enhances high-speed capability.
Precision & Longevity: Manufactured to P4A tolerance class with precise bearing dimensions, this set ensures smooth, vibration-free operation. The hybrid ceramic construction reduces wear and extends service life, particularly in demanding environments.
Temperature Stability: The phenolic cage and ceramic balls maintain dimensional stability across the operating temperature range of -30°C to 110°C.
71907 CD/HCP4ADT Bearing Typical Application Areas
This high-precision, high-speed bearing set is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Instrumentation: Medical devices, coordinate measuring machines, and optical equipment.
- High-Frequency Spindles: PCB drilling, dental handpieces, and small tool machining centers.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical rotating assemblies.
