71804 ACDGB/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 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71804 ACDGB/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle enables efficient handling of combined radial and axial loads, while the light preload (Class B) ensures minimal deflection and vibration in precision assemblies. The bearing comes pre-lubricated and features an open seal type for optimal performance in controlled environments.
71804 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71804 | Basic bearing designation indicating metric dimensions (20mm bore, 32mm OD, 7mm width) |
| AC | Angular Contact design with 25° contact angle |
| DGB | Universal Matchable bearing that can be paired in any combination (SU designation) |
| P4 | High precision tolerance class with tight dimensional control |
71804 ACDGB/P4 Bearing Structural Features & Performance Benefits
High Precision Construction: The P4 tolerance class ensures minimal dimensional variation and superior running accuracy, making it ideal for applications demanding precise rotational characteristics.
Optimized Load Capacity: With a 25° contact angle, this bearing effectively handles combined radial and axial loads, providing stable performance under complex loading conditions.
Enhanced Speed Performance: The phenolic cage material and optimized internal geometry contribute to excellent high-speed capabilities, achieving a limiting speed of 121,000 rpm.
Universal Matching Capability: Designated as Universal Matchable (SU), these bearings can be supplied in sets of three for precise preload arrangements in matched pairs or multiple bearing configurations.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring high durability and consistent performance across the operating temperature range of -30°C to 110°C.
71804 ACDGB/P4 Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and precision grinding equipment
- Medical equipment and dental handpieces
- Aerospace components and instrumentation systems
- Precision robotics and automation systems
- Optical positioning systems and measuring instruments
