706AC
Miniature Angular Contact Ball Bearings
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Part No.
Part No.
706AC
Basic Information
System of measurement
Metric
Weight
0.006 kg
ABEC rating
P5(ABEC-5),P4(ABEC-11)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
6 mm
Outside diameter
17 mm
Width
6 mm
Contact angle
25 °
Performance
Grease limited speed
80000 r/min
Oil limited speed
135000 r/min
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Preload
Available
Materials
Ball material
Steel,Ceramic
Cage material
Nylon,Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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706AC Bearing Product Overview & Core Advantages
The 706AC angular contact ball bearing is a precision bearing engineered for applications demanding high speed and exceptional rigidity. This double row angular contact ball bearing is designed to accommodate combined loads—simultaneous radial and bidirectional axial loads—making it an ideal, compact solution for high-precision and high-reliability machinery. Its universal matchable (SU) design allows for flexible mounting arrangements, simplifying installation and enhancing performance stability.
706AC Bearing Model Code Explained, Specifications & Naming Convention
The model designation "706AC" and its available options indicate specific technical features:
- 706: Standard bearing series number, defining the fundamental bearing dimensions.
- AC: Denotes Angular Contact design with a 25° contact angle, optimized for axial load capacity.
- Seal Type: Available in Sealed (for contaminant protection) or Open (for high-speed oil lubrication) versions.
- Preload: Available options to eliminate internal clearance, providing higher rigidity and rotational accuracy.
- SU: Universal Matchable arrangement, allowing bearings to be mounted in any combination.
- Cage Material: Options include Nylon for quiet operation and Phenolic for high-temperature applications.
- Ball Material: Standard Steel or high-performance Ceramic (Si3N4) for extreme speed and longevity.
- ABEC Rating: Available in P5 (ABEC-5) and P4 (ABEC-7) precision classes for demanding applications.
706AC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior rigidity and enables the bearing to handle significant combined loads and bidirectional axial forces efficiently.
- Exceptional High-Speed Performance: With an impressive grease limited speed of 80,000 r/min and an oil limited speed of 135,000 r/min, this bearing is a top-tier high-speed bearing. The lightweight polymer cages (Nylon/Phenolic) contribute to lower centrifugal forces and reduced friction.
- Precision & Longevity: Manufactured to ABEC P5/P4 precision grades, it ensures smooth, accurate rotation. The availability of ceramic balls further enhances speed capability and service life by reducing weight and wear.
- Versatile & Low Maintenance: The universal matchable (SU) design offers installation flexibility. Sealed versions come lubricated and are ready for long-term, maintenance-free operation in contaminated environments.
706AC Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers, grinders, and routers
- Precision Instrumentation and medical devices
- High-Frequency Motors and turbo-molecular pumps
- Aerospace Actuators and guidance systems
- Advanced Robotics and automation equipment
