71905 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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71905 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 71905 CE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and high-speed performance. This duplex back-to-back (DB) matched set provides superior rigidity and can accommodate combined radial and axial loads. Manufactured to P4A tolerance class and featuring a phenolic cage with ceramic balls, this bearing is engineered for high reliability in precision machinery and equipment.
71905 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71905 | Basic bearing designation with 25mm bore, 42mm OD, 18mm width |
| CE | Contact angle of 15° |
| HC | Hybrid ceramic construction (ceramic balls with steel rings) |
| P4A | High precision tolerance class |
| DB | Duplex Back-to-Back arrangement |
| A | Extra light preload |
71905 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of ceramic balls with chrome steel rings reduces friction, minimizes heat generation, and extends service life, particularly in high-speed applications.
Enhanced Rigidity: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and maintains precise shaft positioning.
High-Speed Capability: The phenolic cage and hybrid construction enable operation at limiting speeds up to 100,500 rpm, making it ideal for high-speed spindles.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0) ensures consistent high-precision operation.
Optimized Load Capacity: With a 15° contact angle and dynamic load rating of 1960 lbf, this bearing efficiently handles combined radial and axial loads.
71905 CE/HCP4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- High-Speed Motors: Precision electric motors and servo drives
- Medical Equipment: Dental handpieces and surgical tools
- Aerospace Systems: Guidance systems and precision instrumentation
- Semiconductor Manufacturing: Wafer handling equipment and precision positioning systems
