71807 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71807 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71807 CDGA/HCP4 is a single-row angular contact ball bearing engineered for ultra-high precision and performance. Positioned in the P4 tolerance class, it delivers exceptional running accuracy and rotational stability. A key advantage is its universal matchable (SU) design, allowing bearings to be mounted in tandem, face-to-face, or back-to-back arrangements to achieve specific stiffness and load-handling characteristics. The combination of a ceramic ball material and phenolic cage enables superior high-speed performance, while the extra light preload (Class A) ensures minimal friction and precise operation from the outset.
71807 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing designation, defining the standard metric dimensions (35mm bore, 47mm OD, 7mm width). |
| C | Specifies a 15° contact angle, optimized for handling combined loads. |
| DG | Indicates a Universal Matchable (SU) bearing, supplied as part of a set for flexible mounting configurations. |
| A | Denotes an Extra Light Preload (Class A), providing high rotational accuracy with low starting torque. |
| HCP4 | Defines the tolerance class and material/design features. P4 signifies high precision, while HC typically refers to the use of Hybrid Ceramic balls. |
71807 CDGA/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic (silicon nitride) balls with a chrome steel ring significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds (up to 56,000 rpm).
- Precision & Rigidity: Manufactured to P4 tolerance standards with extremely tight dimensional tolerances on the bore, outside diameter, and width. This ensures precise shaft positioning and contributes to overall system high rigidity.
- Optimized High-Speed Cage: The phenolic resin cage is lightweight and possesses excellent slip characteristics, which is crucial for maintaining stability and low vibration at the bearing's limiting speed.
- Superior Load Capacity: The 15° contact angle is engineered to efficiently support combined loads, handling both radial forces and substantial axial loads in one direction.
- Pre-lubricated & Ready-to-Use: The bearing comes lubricated from the factory, ensuring immediate and reliable operation within its specified temperature range of -30°C to 110°C.
71807 CDGA/HCP4 Bearing Typical Application Areas
The 71807 CDGA/HCP4 is ideally suited for high-performance applications demanding precision and speed, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation Arms
- Advanced Medical and Dental Equipment Spindles
- Aerospace Instrumentation and Gyroscopes
