727 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
727 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.012 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.005mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
9
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
666 lbf
Radial static load rating
261 lbf
Limiting speed
150 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 102.32
/ each
In Stock
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727 CD/HCP4A Bearing Product Overview & Core Advantages
The 727 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision and high-speed applications. Its defining characteristic is the 15° contact angle, optimized to support significant combined loads—handling both radial and axial forces simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy and rotational stability. The combination of a ceramic ball and phenolic cage enables superior limiting speeds of up to 150,000 rpm, making it an ideal choice for demanding, high-velocity spindle systems.
727 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 727 CD | Basic bearing designation, indicating a specific internal design and bearing dimensions (7mm bore, 22mm OD, 7mm width). |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce friction, heat generation, and wear. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific internal clearance and optimized geometry for high-precision performance. |
727 CD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The hybrid ceramic balls and lightweight phenolic resin cage significantly reduce centrifugal forces, enabling stable operation at the limiting speed of 150,000 rpm.
- Precision & Rigidity: Manufactured to P4 precision class with strict dimensional tolerances, this bearing provides high running accuracy and system rigidity for precise positioning.
- Superior Load Capacity: The 15° contact angle design is optimized to handle combined radial and axial loads efficiently, ensuring reliable performance under complex loading conditions.
- Preload Availability: The bearing is supplied with a preload option, which eliminates internal clearance to enhance stiffness and minimize axial/radial runout in the assembled application.
- Temperature & Lubrication: Pre-lubricated and capable of operating within a temperature range of -30°C to 110°C, it is suitable for a wide array of operational environments.
727 CD/HCP4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery requiring high rotational speeds and accuracy, including:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Dental and Medical Handpiece Drives
- Aerospace Instrumentation and Gyroscopes
