71805 CD/HCP4DGB
Hybrid Ceramic Super Precision Bearings
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71805 CD/HCP4DGB Bearing Product Overview & Core Advantages
The 71805 CD/HCP4DGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and speed performance. Engineered with a universal matchable (SU) design, this bearing can be mounted in pairs to handle combined loads efficiently. Its P4 tolerance class ensures ultra-precise operation, while the ceramic balls and phenolic cage contribute to superior high-speed capabilities and reduced weight. This bearing is pre-lubricated and optimized for applications where high rigidity and minimal thermal expansion are critical.
71805 CD/HCP4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Universal matchable bearing designed for duplex mounting (face-to-face or back-to-back) |
| HC | Hybrid Ceramic - indicates the use of ceramic balls for enhanced performance |
| P4 | High precision tolerance class (superior to ABEC 7) |
| DGB | Light preload (Class B) for optimal stiffness and minimal deflection |
71805 CD/HCP4DGB Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls provides superior performance at high speeds, reduced friction, and extended service life. The ceramic balls also offer electrical insulation properties and better performance in high-temperature environments.
Precision Engineering: With P4 tolerance class and tight dimensional control, this bearing ensures minimal runout and vibration, making it ideal for precision applications. The 15° contact angle provides optimal balance between radial and axial load capacity.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at the limiting speed of 103,000 rpm. The open design allows for efficient lubrication distribution while maintaining dimensional stability.
Universal Matching Design: The SU arrangement allows bearings to be mounted in pairs without selective matching, simplifying installation while providing high rigidity and precise axial positioning.
71805 CD/HCP4DGB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Motors - Electric motors and generators requiring extreme rotational accuracy
- Aerospace Systems - Guidance systems, flight control actuators, and auxiliary power units
- Medical Equipment - Dental handpieces, surgical tools, and diagnostic imaging systems
- Semiconductor Manufacturing - Wafer handling robots and precision positioning stages
- Test & Measurement Equipment - Coordinate measuring machines and optical inspection systems
