71804 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71804 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71804 CDGA/HCP4 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. This single bearing features a 15° contact angle and P4 tolerance class for superior rotational precision. Its core advantages include the ability to handle combined radial and axial loads efficiently, extra light preload (Class A) for minimal friction and high running accuracy, and compatibility for universal matching (SU) to create optimized bearing arrangements. The use of ceramic balls and phenolic cage contributes to its high-speed capability, low weight, and extended service life.
71804 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71804 | Basic bearing designation indicating bore diameter: 20 mm, outside diameter: 32 mm, and width: 7 mm |
| CDGA | Designates 15° contact angle and extra light preload (Class A) |
| HCP4 | Indicates hybrid ceramic construction (ceramic balls with steel rings) and P4 tolerance class for high precision |
71804 CDGA/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings with ceramic balls provides superior performance characteristics including reduced friction, higher limiting speed (100,500 rpm), and improved corrosion resistance.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic resin cage and ceramic balls work in synergy to enable high rotational speeds while maintaining dimensional stability at elevated temperatures.
Load Capacity: With a radial dynamic load rating of 878 lbf and radial static load rating of 596 lbf, this bearing efficiently handles combined loads in precision applications.
71804 CDGA/HCP4 Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications including:
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and CNC equipment
- Precision instruments and measuring devices
- Medical equipment spindles and rotary tables
- Aerospace components requiring reliable high-speed operation
- Robotic joints and automation systems
