726C
Miniature Angular Contact Ball Bearings
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Part No.
Part No.
726C
Basic Information
System of measurement
Metric
Weight
0.0081 kg
ABEC rating
P5(ABEC-5),P4(ABEC-20)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
6 mm
Outside diameter
19 mm
Width
6 mm
Contact angle
15 °
Performance
Radial dynamic load rating
622.7 lbf
Radial static load rating
283.25 lbf
Grease limited speed
80000 r/min
Oil limited speed
110000 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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726C Bearing Product Overview & Core Advantages
The 726C is a precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. As a single-row bearing, it is designed to accommodate high radial loads and substantial one-direction axial loads simultaneously. Its compact design and availability in various precision classes, including ABEC 5 (P5) and ABEC 7 (P4), make it an ideal component for high-precision spindles and other machinery requiring superior running accuracy and high rigidity.
726C Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 726C | Basic bearing designation, indicating a specific series of metric angular contact ball bearings. |
| Sealed / Open | Available in both sealed (for contamination protection) and open (for direct lubrication) variants. |
| SU | Denotes Universal Matchable design, allowing bearings to be mounted in pairs (back-to-back, face-to-face, or tandem) to support combined loads. |
| P5 / P4 | Precision class ratings, with P4 (ABEC 7) offering the highest level of running accuracy for the most demanding high-speed applications. |
726C Bearing Structural Features & Performance Benefits
- Optimized Contact Angle (15°): This design provides an excellent balance between radial load capacity and axial load capacity, making the bearing highly versatile for complex loading conditions.
- High-Speed Capability: The use of lightweight nylon or phenolic cages minimizes centrifugal forces, contributing to the exceptionally high speed ratings (up to 110,000 r/min with oil lubrication).
- Precision & Rigidity: Manufactured to ABEC 5/P5 and ABEC 7/P4 tolerances, these bearings ensure minimal runout and vibration, which is critical for achieving high machining quality and system stability.
- Material Options: The availability of both steel and ceramic balls allows for customization based on application requirements, with ceramic balls offering advantages in high-speed, high-temperature, and non-magnetic environments.
- Universal Matching (SU): This feature enables easy arrangement of bearings in pairs to create a rigid bearing system capable of handling moment loads and bidirectional axial thrust.
726C Bearing Typical Application Areas
The 726C precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and lathe spindles.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment.
- High-Speed Motors and Drives: Servo motors, turbo-molecular pumps, and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
