71819 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71819 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71819 ACDGB/P4 is a single row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under the stringent P4 tolerance class, this bearing is designed to handle significant combined loads, particularly axial loads in one direction. Its universal matchable (SU) design allows for flexible mounting in pairs to accommodate bidirectional axial loads. The combination of a phenolic cage and factory-applied lubrication enables high-speed operation up to 15,000 rpm, making it an ideal solution for machine tool spindles and other demanding precision equipment.
71819 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71819 | Basic bearing designation (95mm bore, 120mm OD) |
| AC | Angular Contact design (25° contact angle) |
| DGB | Universal Matchable bearing (can be paired in any combination) |
| P4 | High precision tolerance class |
71819 ACDGB/P4 Bearing Structural Features & Performance Benefits
Optimized Contact Angle & Rigidity: The 25° contact angle provides an optimal balance between radial and axial load capacity, delivering high rigidity for precision applications.
Precision Manufacturing: Manufactured to P4 tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for smooth operation.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at the limiting speed of 15,000 rpm, while the pre-lubrication reduces friction and heat generation.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired in various configurations (back-to-back, face-to-face, or tandem) to handle complex loading conditions.
Superior Load Ratings: With a dynamic load rating of 4,680 lbf and static load rating of 5,738 lbf, it provides reliable performance under demanding operating conditions.
71819 ACDGB/P4 Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and lathes
- Precision Grinding Spindles - Applications requiring extreme rotational accuracy
- High-Speed Motors - Electric motors and generators operating at elevated speeds
- Medical Equipment - CT scanners and other precision medical devices
- Aerospace Systems - Guidance systems and auxiliary power units
- Robotics - Precision joints and rotary actuators
