727C
Miniature Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
727C
Basic Information
System of measurement
Metric
Weight
0.013 kg
ABEC rating
P5(ABEC-5),P4(ABEC-22)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Outside diameter
22 mm
Width
7 mm
Contact angle
15 °
Performance
Radial dynamic load rating
755.33 lbf
Radial static load rating
314.72 lbf
Grease limited speed
67000 r/min
Oil limited speed
71000 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.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
727C Bearing Product Overview & Core Advantages
The 727C is a high-performance angular contact ball bearing engineered for precision applications requiring exceptional speed capabilities and rigidity. This precision bearing is designed to accommodate combined loads—simultaneously handling radial loads and axial loads in one direction—making it ideal for compact, high-speed arrangements. Available in both sealed and open configurations, and with optional ceramic ball materials, it offers versatility for demanding operational environments. Its universal matchable (SU) design allows for flexible mounting in preloaded sets, ensuring optimal system stiffness and rotational accuracy.
727C Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 727C | Basic model number, defining the bearing dimensions (7mm bore, 22mm OD, 7mm width). |
| Sealed / Open | Indicates availability with integral seals for contamination protection or as an open bearing for direct lubrication systems. |
| SU | Universal Matchable arrangement. Bearings can be mounted in any combination to achieve the required preload and rigidity. |
| P5 / P4 | High ABEC rating (P5/ABEC-5 or P4/ABEC-22), signifying superior dimensional and running accuracy for precision applications. |
727C Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 15° contact angle provides robust support against combined loads. The option for preload further enhances system stiffness, minimizing deflection under operational stresses.
- Exceptional High-Speed Performance: Engineered for ultra-high rotational speeds, with a grease limited speed of 67,000 r/min and an oil limited speed of 71,000 r/min. The use of lightweight nylon or phenolic cages reduces centrifugal forces, contributing to stable operation at extreme velocities.
- Advanced Material Options: The availability of ceramic balls (hybrid construction) reduces weight, decreases friction, and provides non-conductive properties, ideal for electrically sensitive or higher-speed applications compared to all-steel construction.
- Precision and Longevity: Manufactured to high ABEC ratings (P5/P4), this bearing ensures smooth, quiet running and precise shaft positioning, extending the service life of the entire assembly.
727C Bearing Typical Application Areas
This bearing is ideally suited for high-speed, precision machinery, including:
- High-frequency spindles for CNC machining centers and PCB drilling machines
- Turbochargers and auxiliary power units
- Precision instrumentation and medical device motors
- High-speed automation and robotics drives
