718/9AC
Miniature Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
718/9AC Bearing Product Overview & Core Advantages
The 718/9AC is a miniature angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Its compact design, with a 9 mm bore, 17 mm outside diameter, and 5 mm width, makes it ideal for space-constrained, high-speed assemblies. Available in both steel and ceramic ball variants, and with multiple cage material and ABEC rating options, it offers versatile solutions for demanding performance requirements.
718/9AC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 718 | Series designation for ultra-precision, miniature angular contact ball bearings. |
| 9 | Bore diameter: 9 mm. |
| AC | Angular Contact design with a standard contact angle of 25°. |
Available Configurations: This base model can be supplied with options including Sealed or Open designs, Preload, and is Universal Matchable (SU) for creating precision-matched bearing sets.
718/9AC Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with high-grade manufacturing to ABEC P5/P4 tolerances, provides exceptional running accuracy and system stiffness, crucial for minimizing deflection under load.
- Superior Load Capacity: The 25° contact angle is optimized to efficiently support combined radial and axial loads, making it suitable for applications with significant thrust requirements.
- High-Speed Capability: Lightweight Nylon or Phenolic cages reduce centrifugal forces, while optimized internal geometry enables high rotational speeds. The optional ceramic balls further enhance speed performance and service life.
- Versatile and Reliable: The availability of preload options eliminates internal clearance for zero-play operation, and the Universal Matchable (SU) feature allows for easy assembly of pre-adjusted, high-stiffness pairs.
718/9AC Bearing Typical Application Areas
This high-precision miniature 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 and milling spindles, dental handpieces.
- Precision Instruments: Optical encoders, laboratory equipment, measuring devices.
- Robotics: Joints and actuators in small-scale robotic arms.
- Semiconductor Manufacturing: Precision stages and handling equipment.
