724C
Miniature Angular Contact Ball Bearings
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Part No.
Part No.
724C
Basic Information
System of measurement
Metric
Weight
0.0032 kg
ABEC rating
P5(ABEC-5),P4(ABEC-16)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4 mm
Outside diameter
13 mm
Width
5 mm
Contact angle
15 °
Performance
Radial dynamic load rating
298.98 lbf
Radial static load rating
114.64 lbf
Grease limited speed
88000 r/min
Oil limited speed
93000 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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724C Bearing Product Overview & Core Advantages
The 724C is a precision angular contact ball bearing engineered for applications demanding exceptional high-speed performance and rigidity. As a single-row bearing, it is optimized to support combined loads—simultaneously carrying significant radial loads and axial loads in one direction. Its compact design, featuring a 4 mm bore, 13 mm outside diameter, and 5 mm width, makes it ideal for space-constrained, high-precision assemblies requiring high reliability and operational accuracy.
724C Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 724C | Basic bearing designation, indicating a single-row angular contact ball bearing with a 15° contact angle. | Defines the fundamental bearing type and optimized performance characteristics for combined loads. |
| Sealed / Open | Available with seals or in an open configuration. | Sealed variants offer contamination protection, while open variants allow for custom lubrication schemes. |
| P5 / P4 (ABEC-5 / ABEC-16) | High-precision ABEC rating. | Ensures extremely tight tolerances for smooth, quiet, and precise operation in demanding applications. |
724C Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a lightweight Nylon or Phenolic cage and high-precision manufacturing enables exceptional grease limited speeds of 88,000 r/min and oil limited speeds of 93,000 r/min.
- Combined Load Support: The 15° contact angle is specifically designed to handle combined radial and axial loads efficiently, providing stable operation.
- High Rigidity & Precision: Manufactured to ABEC P5/P4 precision classes, this bearing offers superior running accuracy and high rigidity, minimizing deflection under load.
- Material & Lubrication Options: Available with steel or ceramic balls and pre-lubricated, offering flexibility to tailor performance for specific requirements regarding speed, temperature, and service life.
- Universal Matchability (SU): Can be universally matched in pairs (back-to-back, face-to-face, or tandem) to support higher loads or moment loads, enhancing application versatility.
724C Bearing Typical Application Areas
The 724C precision angular contact ball bearing is ideally suited for high-performance applications, including:
- High-Speed Spindles in CNC machining centers and PCB drilling machines
- Precision Instrumentation and optical encoders
- Dental and Medical Handpieces
- Small High-Speed Motors and turbo-molecular pumps
- Robotics and automation arm joints
