7204 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7204 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.09 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
11
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2678 lbf
Radial static load rating
1316 lbf
Limiting speed
60 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:
$ 63
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7204 CD/HCP4A Bearing Product Overview & Core Advantages
The 7204 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Designed to accommodate primarily radial loads combined with axial loads in one direction, it features a 15° contact angle for optimal load distribution. Manufactured to P4 (ABEC-7) tolerance class, this bearing delivers exceptional running accuracy and rotational stability. Its ceramic ball construction and phenolic cage contribute to its capability for high-speed operation up to 60,000 rpm, making it ideal for precision machinery requiring minimal vibration and maximum reliability.
7204 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Optimized internal geometry for high-speed and high-precision applications. |
| HC | Hybrid Ceramic construction, featuring ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific running accuracy requirements, suitable for machine tool spindles. |
7204 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds. This results in extended service life, especially in high-speed applications.
- High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's 60,000 rpm limiting speed.
- Precision & Rigidity: Manufactured to P4 tolerance with a 15° contact angle, this bearing provides high running accuracy and rigid support for shafts, minimizing deflection under combined loads.
- Preload Availability: The availability of preload allows for precise control of axial and radial rigidity, eliminating internal clearance and enhancing system stiffness for superior positioning accuracy.
7204 CD/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: Joints and arm assemblies requiring high accuracy and speed.
- High-Speed Motors & Spindles: Electric motors, dental handpieces, and small turbine spindles.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
