719/7AC
Miniature Angular Contact Ball Bearings
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Part No.
Part No.
719/7AC
Basic Information
System of measurement
Metric
Weight
0.0052 kg
ABEC rating
P5(ABEC-5),P4(ABEC-17)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Outside diameter
17 mm
Width
5 mm
Contact angle
25 °
Performance
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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719/7AC Bearing Product Overview & Core Advantages
The 719/7AC bearing is a precision angular contact ball bearing designed for applications demanding high rotational accuracy and rigidity. Engineered with a 25° contact angle, it excels at handling combined loads—simultaneously supporting significant radial and axial forces. Available in both sealed and open variants, and with options for ABEC-5 (P5) and ABEC-7 (P4) precision classes, this compact bearing (7mm bore, 17mm OD, 5mm width) is ideal for high-speed operation and high-reliability scenarios. Its universal matchable (SU) design allows for flexible mounting arrangements to optimize performance.
719/7AC Bearing Model Code Explained, Specifications & Naming Convention
The model number 719/7AC and its associated specifications can be decoded as follows:
- 719/7: Denotes the bearing series and a 7 mm bore diameter.
- AC: Signifies Angular Contact design.
- Seal Type: Available as Sealed (for contaminant protection) or Open (for high-speed or custom lubrication).
- Preload: Available options to eliminate internal clearance and enhance system rigidity.
- SU: Universal Matchable, meaning single bearings can be mounted in any combination (face-to-face, back-to-back) to achieve the desired preload and stiffness.
- ABEC Rating: Offered in high-precision P5 (ABEC-5) and ultra-precision P4 (ABEC-7) grades.
- Contact Angle: 25°, optimized for sustaining high axial loads.
- Lubrication: Comes Lubricated from the factory for immediate operation.
719/7AC Bearing Structural Features & Performance Benefits
The 719/7AC's design delivers distinct performance advantages:
- High Rigidity and Load Capacity: The angular contact design and availability of preload enable the bearing to achieve exceptional system stiffness, effectively managing combined radial and axial loads.
- High-Speed Performance: Options for lightweight Nylon or Phenolic cages reduce centrifugal forces, while the precision-ground raceways and balls contribute to smooth, high-speed operation.
- Material Versatility: Available with standard Steel or high-performance Ceramic balls, allowing for customization based on requirements for speed, temperature, and corrosion resistance.
- Long Service Life: The sealed versions protect against contaminants, and the pre-applied lubrication ensures reliable operation, reducing maintenance needs.
719/7AC Bearing Typical Application Areas
This precision bearing is suited for a wide range of demanding applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Instrumentation
- Robotic Drives and Actuators
- Medical and Dental Equipment
- Pumps and Compressors
