71819 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71819 CDGA/P4 Bearing Product Overview & Core Advantages
The 71819 CDGA/P4 is a single-row angular contact ball bearing designed for applications demanding high precision and exceptional running accuracy. Positioned in the P4 tolerance class, this bearing delivers superior dimensional stability and rotational precision. Its 15° contact angle is optimized to handle significant combined loads (radial and axial loads simultaneously), while the Extra Light (Class A) preload ensures minimal deflection and smooth operation. The phenolic cage and universal matching capability make it ideal for high-speed spindle arrangements requiring high rigidity and thermal stability.
71819 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 71819 | Basic bearing designation (95mm bore, 120mm OD) | Standard metric dimensions |
| C | 15° contact angle design | Optimized for combined load capacity |
| DG | Universal matchable bearing pair | Enables precise preload arrangement in sets |
| A | Extra Light preload (Class A) | Minimizes deflection, enhances precision |
| P4 | High precision tolerance class | Superior running accuracy and dimensional stability |
71819 CDGA/P4 Bearing Structural Features & Performance Benefits
High-Precision Design: Manufactured to P4 tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 4972 lbf and static load rating of 6188 lbf.
High-Speed Performance: Phenolic cage construction provides excellent strength-to-weight ratio, contributing to the limiting speed of 15,000 rpm while reducing centrifugal forces.
Thermal Stability: The phenolic cage material offers superior thermal characteristics, maintaining dimensional stability across the operating temperature range (-30°C to 110°C).
Precision Matching: As a universal matchable bearing, it can be paired with identical bearings to create precisely preloaded sets, eliminating the need for selective assembly.
71819 CDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Servo motors, spindle motors, and high-frequency drive systems
- Aerospace Components: Guidance systems, actuator mechanisms, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
