7203 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7203 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.054 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
40 mm
Outside diameter tolerance
-0.006mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1989 lbf
Radial static load rating
900 lbf
Limiting speed
67 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:
$ 88.63
/ each
In Stock
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7203 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7203 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and reliability. This single-row bearing features a 25° contact angle, enabling it to support combined loads with superior axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers ultra-precise running characteristics. Its construction with a phenolic cage and ceramic balls contributes to high-speed performance, low friction, and extended service life, making it an ideal solution for high-rigidity, high-velocity spindle systems.
7203 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle, optimized for high axial load capacity and rigidity. |
| HC | Refers to the Hybrid Ceramic construction, featuring ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4 | Denotes the ultra-precision tolerance class (ABEC-7), ensuring minimal runout and vibration for critical applications. |
7203 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized 25° contact angle and robust single-row design provide excellent resistance to combined radial and axial loads, ensuring stable operation under demanding conditions.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 67,000 rpm and lower operating temperatures.
- Enhanced Durability & Precision: Manufactured to P4 precision class with tight dimensional tolerances, this bearing guarantees exceptional running accuracy and long-term dimensional stability.
- Preload Availability: The bearing is supplied with a preload, which increases system stiffness, minimizes axial and radial play, and improves positional accuracy in the assembly.
7203 ACD/HCP4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are paramount. Key applications include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arm joints, high-accuracy rotary axes)
- High-Frequency Motors and Spindles
- Medical Equipment (Dental handpieces, laboratory centrifuges)
- Aerospace Actuation Systems
