7226 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7226 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
5.18 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
230 mm
Outside diameter tolerance
-0.011mm to 0
Width
40 mm
Width tolerance
-0.24mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
30.162 mm
Ball quantity
17
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
48600 lbf
Radial static load rating
50400 lbf
Limiting speed
11 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:
$ 1848.6
/ each
In Stock
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7226 CD/HCP4A Bearing Product Overview & Core Advantages
The 7226 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. Designed as a single matched arrangement with P4 (ABEC-7) tolerance class, this bearing delivers superior performance in high-speed spindle systems. Its 15° contact angle is optimized to handle significant combined loads, efficiently supporting both radial and axial forces. The use of ceramic balls and a phenolic cage contributes to reduced friction, lower operating temperatures, and extended service life, making it an ideal solution for high-reliability, precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7226 | Basic bearing series and size designation (130mm bore, 230mm OD, 40mm width). |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise operation. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Denotes the P4 tolerance class (equivalent to ABEC-7), ensuring ultra-precise running accuracy. |
| A | Indicates that the bearing is supplied with a specific preload for immediate high-stability performance. |
7226 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single matched arrangement with a 15° contact angle and P4 precision provides exceptional dimensional stability and minimizes runout, which is critical for high-speed applications.
- Enhanced Speed & Temperature Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic resin cage allows for a limiting speed of 11,000 rpm. This hybrid construction also reduces heat generation and can operate within a temperature range of -30°C to 110°C.
- Superior Load Capacity: With a dynamic load rating of 48,600 lbf and a static load rating of 50,400 lbf, this bearing is built to withstand significant combined radial and axial loads.
- Optimized for Preload: The bearing is supplied with a preload, ensuring immediate high stiffness and positional accuracy without the need for initial adjustment, simplifying installation and improving machine performance from startup.
7226 CD/HCP4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators requiring high positional accuracy.
- High-Frequency Motors and Spindles: Applications in PCB drilling and semiconductor manufacturing equipment.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other critical rotational mechanisms.
