719/7C
Miniature Angular Contact Ball Bearings
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Part No.
Part No.
719/7C
Basic Information
System of measurement
Metric
Weight
0.0052 kg
ABEC rating
P5(ABEC-5),P4(ABEC-16)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Outside diameter
17 mm
Width
5 mm
Contact angle
15 °
Performance
Radial dynamic load rating
364.18 lbf
Radial static load rating
161.86 lbf
Grease limited speed
70000 r/min
Oil limited speed
75000 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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719/7C Bearing Product Overview & Core Advantages
The 719/7C is a miniature precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed capability. This single-row bearing excels in supporting combined loads, handling both radial forces and substantial axial loads in one direction. Its compact design, with a 7mm bore and 17mm outside diameter, makes it ideal for space-constrained, high-performance assemblies. Manufactured to ABEC 5/P5 and ABEC 7/P4 precision classes, it ensures smooth operation, low noise, and minimal vibration, delivering superior reliability in demanding environments.
719/7C Bearing Model Code Explained, Specifications & Naming Convention
The model number 719/7C can be broken down as follows to understand its technical specifications:
- 719: Denotes the series, indicating a miniature, high-precision angular contact design with a 15° contact angle.
- 7: Represents the bore diameter in millimeters (7 mm).
- C: Signifies the contact angle of 15°, optimized for high-speed operation and high axial load capacity.
- Seal/Open Types: Offered in both sealed and open variants to suit different contamination and lubrication needs.
- Preload: Available with preload for enhanced rigidity and precise shaft positioning.
- Universal Match (SU): Bearings are universally matchable, allowing for flexible arrangement in pairs (back-to-back, face-to-face, or tandem) to support complex load conditions.
719/7C Bearing Structural Features & Performance Benefits
- High-Speed Performance: Engineered with a lightweight nylon or phenolic cage, this bearing achieves exceptional grease-limited speeds of 70,000 r/min and oil-limited speeds of 75,000 r/min. The optimized internal geometry minimizes friction and heat generation.
- Superior Rigidity and Load Capacity: The 15° contact angle provides excellent resistance to axial loads while maintaining good radial load capacity (dynamic: 364.18 lbf, static: 161.86 lbf). Available preload further increases system stiffness.
- Material and Precision: Manufactured to high-precision ABEC 5/P5 and ABEC 7/P4 tolerances. Options for ceramic balls are available for enhanced speed, reduced weight, and non-conductive properties.
- Versatile Lubrication: Comes lubricated from the factory for immediate use. The sealed version offers extended lubrication life and protection against contaminants.
719/7C Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- High-Speed Spindles: CNC machining centers, PCB drilling machines, and dental handpieces.
- Precision Instruments: Optical encoders, gyroscopes, and medical diagnostic equipment.
- Aerospace and Defense Systems: Guidance systems, actuators, and small turbine engines.
- Robotics: High-accuracy joints and actuators in collaborative and industrial robots.
