71804 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71804 CDGA/P4 Bearing Product Overview & Core Advantages
The 71804 CDGA/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional running accuracy. Operating under P4 tolerance class with an extra light preload (Class A), this bearing delivers superior rotational precision and minimal runout. Its 15° contact angle is optimized for handling combined loads, particularly thrust loads in one direction, while maintaining high-speed capability up to 100,500 rpm. The phenolic cage and universal matching capability make it ideal for precision spindle arrangements.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71804 | Basic bearing series with 20mm bore, 32mm OD, 7mm width | Compact design for space-constrained applications |
| CDGA | Universal Matchable bearing with extra light preload (Class A) | Enables precise bearing arrangements with minimal thermal effects |
| P4 | High precision tolerance class | Superior running accuracy and reduced vibration |
71804 CDGA/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4 tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance.
High-Speed Capability: The phenolic resin cage provides excellent dimensional stability at high speeds, contributing to the bearing's impressive limiting speed of 100,500 rpm. The optimized 15° contact angle balances thrust capacity with speed performance.
Load Capacity: With a dynamic load rating of 878 lbf and static load rating of 596 lbf, this bearing handles significant combined loads. The angular contact design efficiently manages both radial and axial loads in one direction.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired in sets of up to 4 bearings to create precisely matched arrangements for complex spindle configurations.
Material Excellence: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
71804 CDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring P4 accuracy
- High-Speed Motors: Precision electric motors and servo drives operating at elevated speeds
- Medical Equipment: Surgical handpieces and dental drill systems demanding reliability and precision
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- Test & Measurement Equipment: Coordinate measuring machines and optical inspection systems
