705AC
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
705AC Bearing Product Overview & Core Advantages
The 705AC is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to simultaneously handle combined radial and axial loads, this metric series bearing is characterized by its compact design with a 5mm bore, 14mm outside diameter, and 5mm width. Its 25° contact angle provides optimal performance for high-speed operations and rigid support. Available in both sealed and open configurations, and with options for steel or ceramic balls, the 705AC is a versatile solution for the most demanding precision engineering challenges.
705AC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 705 | Basic bearing series designation, indicating a 5mm bore diameter, 14mm OD, and 5mm width. |
| AC | Angular Contact design, signifying the bearing is optimized for combined loads. |
Available Configurations & Suffixes: The base 705AC model can be specified with various options that define its final performance characteristics.
- Seal Type: Available in Open or Sealed variants for different environmental protection needs.
- Ball Material: Standard Steel or high-performance Ceramic (Si3N4) for enhanced speed and longevity.
- Cage Material: Options include Nylon for quiet operation and high speeds, or Phenolic for high-temperature applications.
- Precision Class: Manufactured to ABEC 5 (P5) or ABEC 7 (P4) tolerances for ultra-high precision applications.
- Preload: Preload options are available to minimize axial and radial play, increasing system rigidity.
- Lubrication: Comes pre-lubricated for immediate operation and long service life.
705AC Bearing Structural Features & Performance Benefits
The 705AC's performance is derived from its sophisticated design features. The angular contact design with a 25° contact angle enables it to support significant combined loads—both radial and axial—simultaneously, making it far more versatile than simple radial bearings. This geometry, combined with the option for ceramic balls, significantly reduces centrifugal forces and friction, enabling higher limiting speeds and reduced operating temperatures. The choice of lightweight polymer or phenolic cages further enhances high-speed capability and ensures smooth operation. The availability of sealed versions protects the bearing's precision internals from contaminants, while the universal matchable (SU) design allows for flexible mounting arrangements in pairs to adjust stiffness and load capacity. With precision grades up to ABEC 7 (P4), this bearing delivers the running accuracy essential for applications requiring minimal vibration and exact positioning.
705AC Bearing Typical Application Areas
- High-Speed Spindles in CNC machining centers and precision grinding machines
- High-Frequency Spindles for PCB drilling and routing
- Precision Instrumentation and optical positioning systems
- Robotic Arms and joints requiring high rigidity and accuracy
- Medical and Dental Handpieces demanding quiet, high-speed operation
- High-Performance Cooling Fans and blowers
