7203 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7203 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4A
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
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3398 lbf
Radial static load rating
1868 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
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
7203 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7203 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched set features a P4A tolerance class and a moderate preload (Class C), making it ideal for handling combined radial and axial loads simultaneously. Its compact design and high-performance phenolic cage contribute to superior high-speed capability and operational stability in demanding environments.
7203 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7203 | Basic bearing series, indicating a 17mm bore, 40mm OD, and angular contact design. |
| C | 15° contact angle, optimized for carrying significant axial loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | High-precision tolerance class with enhanced running accuracy for spindle applications. |
| DB | Back-to-Back arrangement, providing high moment rigidity and stability. |
| C | Moderate preload (Class C) for reduced deflection and improved system stiffness. |
7203 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The back-to-back duplex arrangement creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing superior system rigidity. This configuration enables it to handle combined radial and axial loads efficiently.
- High-Speed Performance: The lightweight phenolic cage ensures low inertia and excellent performance at the high limiting speed of 103,000 rpm. The 15° contact angle is a balanced design for both speed and load.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, ensuring minimal runout and vibration for precision applications.
- Optimized for Performance: The bearing is pre-lubricated and features an open seal type, allowing for optimal lubrication flow in controlled environments, contributing to its wide temperature range of -30°C to 110°C.
7203 CD/P4ADBC Bearing Typical Application Areas
This high-precision duplex bearing is engineered for advanced machinery and systems where accuracy and stiffness are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Robotics and automated manufacturing systems.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Aerospace Actuators: Control surface mechanisms requiring high reliability.
