7203 CDGA/P4AGMM
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7203 CDGA/P4AGMM
Basic Information
System of measurement
Metric
Weight
0.063 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
12 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
2077 lbf
Radial static load rating
934 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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
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7203 CDGA/P4AGMM Bearing Product Overview & Core Advantages
The 7203 CDGA/P4AGMM is a single row angular contact ball bearing designed for ultra-precision applications. Engineered to P4A super precision tolerance standards, it delivers exceptional running accuracy and rotational stability. Its key advantage lies in its ability to handle combined radial and axial loads simultaneously, making it ideal for high-speed spindles and other demanding machinery requiring superior rigidity and minimal runout. The bearing features a universal matchable (SU) design, allowing for flexible mounting configurations in pairs to support bidirectional axial loads.
7203 CDGA/P4AGMM Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| GA | Indicates the bearing is supplied with an Extra Light (Class A) preload, ensuring minimal axial and radial play for high rigidity and precise positioning. |
| P4A | Denotes a super precision tolerance class, exceeding ABEC 7 standards, for applications demanding extreme running accuracy. |
| GMM | Signifies the bearing is universally matchable (SU) and is one of a matched set of 2 bearings, enabling precise pairing for duplex arrangements. |
7203 CDGA/P4AGMM Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures exceptional dimensional stability and low vibration, crucial for high-speed, high-accuracy applications. The extra light preload (GA) eliminates internal clearance, resulting in superior system rigidity and precise shaft guidance.
- Optimized Load Capacity: The 15° contact angle (CD) is engineered to efficiently support combined loads, offering a balanced performance for both radial and axial forces. The dynamic and static load ratings ensure reliable performance under demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized internal geometry and grease lubrication contribute to a high limiting speed, making it suitable for high-speed spindle applications.
- Universal Matching Capability: The Universal Matchable (SU, GMM) design allows any two bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement without selective matching, simplifying installation and ensuring consistent preload and performance in duplex sets.
7203 CDGA/P4AGMM Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotic Drives: High-accuracy joints and servo motors.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation systems.
