719/6AC
Miniature Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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719/6AC Bearing Product Overview & Core Advantages
The 719/6AC is a miniature precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed capability. Engineered with a 25° contact angle, this bearing excels at supporting combined loads—simultaneously handling significant radial and axial forces. Its compact design, featuring a 6mm bore and 5mm width, makes it ideal for space-constrained, high-performance assemblies. Available in both Sealed and Open variants, and with options for P5 (ABEC-5) and P4 (ABEC-15) precision classes, it delivers superior running accuracy and reliability for critical applications.
719/6AC Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning |
|---|---|---|
| Series | 719 | Denotes a series of miniature, high-precision angular contact ball bearings. |
| Bore Diameter | 6 | Specifies a 6 mm bore diameter. |
| Contact Angle | AC | Indicates an Angular Contact design with a standard 25° contact angle. |
Note: The base model 719/6AC is open. Sealed versions and other configurations (e.g., preload, cage material) are designated by additional suffixes.
719/6AC Bearing Structural Features & Performance Benefits
The performance of the 719/6AC is derived from its optimized internal geometry and material options:
- High-Speed & Low Friction: The standard 25° contact angle provides an excellent balance between axial load capacity and high-speed performance. Optional phenolic or nylon cages reduce centrifugal forces and friction, enabling higher limiting speeds.
- Superior Rigidity & Load Capacity: The single-row angular contact design, when mounted in pairs (universal matchable SU), creates a highly rigid bearing system capable of withstanding combined radial and axial loads from both directions.
- Precision & Accuracy: Manufactured to ABEC 5/P5 and ABEC 15/P4 tolerance classes, this bearing ensures minimal runout and vibration, which is critical for maintaining precision in sensitive equipment.
- Application Flexibility: The availability of open and sealed types, along with options for preload and ceramic balls, allows for customization to meet specific operational requirements for life, speed, and contamination protection.
719/6AC Bearing Typical Application Areas
The 719/6AC miniature precision bearing is ideally suited for applications where compact size, high speed, and accuracy are paramount. Key industries and equipment include:
- High-Speed Spindles: PCB drilling spindles, dental handpieces, and small machining centers.
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment.
- Robotics & Automation: Small robotic joints, servo motors, and precision gearboxes.
- Medical Devices: Surgical tools, scanners, and pumps requiring quiet, reliable operation.
