725AC
Miniature Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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725AC Bearing Product Overview & Core Advantages
The 725AC is a precision angular contact ball bearing designed for applications demanding high rigidity and exceptional running accuracy. Engineered to accommodate combined loads (simultaneous radial and axial loads), its compact design makes it ideal for space-constrained, high-performance assemblies. Available in both open and sealed variants, and with options for ceramic balls and specific preloads, it delivers superior reliability in demanding operational environments.
725AC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Advantage |
|---|---|---|
| 725 | Basic Bearing Series & Size Designation | Defines the core bearing dimensions: 5mm bore, 16mm OD, 5mm width. |
| AC | Angular Contact | Optimized geometry to handle thrust loads efficiently. |
| (Seal Type) | Sealed or Open | Sealed versions offer contamination protection for maintenance-free operation. Open versions allow for custom lubrication schemes. |
| (Preload) | Available | Pre-applied axial load eliminates internal clearance, enhancing system rigidity and rotational accuracy. |
| (ABEC Rating) | P5 (ABEC-5) / P4 (ABEC-19) | Denotes precision tolerance grades for applications requiring minimal runout and smooth operation. |
725AC Bearing Structural Features & Performance Benefits
The performance of the 725AC is derived from its optimized construction:
- High Rigidity and Load Capacity: The 25° contact angle is engineered to provide superior support against combined loads, ensuring stable operation under complex force conditions.
- Precision & High-Speed Capability: Manufactured to ABEC P5/P4 precision classes and available with lightweight phenolic or nylon cages, the bearing is capable of high rotational speeds with minimal vibration and heat generation.
- Material Options for Enhanced Performance: The availability of ceramic balls significantly reduces weight and inertia, provides electrical insulation, and enables higher speeds and longer service life, especially in lubricant-starved conditions.
- Universal Matchability (SU): Bearings can be universally matched in pairs to accommodate higher loads and moments, offering design flexibility without the need for selective assembly.
725AC Bearing Typical Application Areas
The 725AC precision bearing is ideally suited for high-performance applications across various industries, including:
- High-Speed Spindles in CNC machining centers and precision grinding machines.
- High-Frequency Motors and Servo Drives requiring low friction and high accuracy.
- Medical and Dental Handpieces where compact size, speed, and reliability are critical.
- Robotics and Automation joints and actuators demanding high rigidity and responsive movement.
- Optical and Instrumentation equipment such as scanners and encoders.
