7205 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7205 CDGB/P4A
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
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
52 mm
Outside diameter tolerance
-0.004mm to 0
Width
15 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
1620 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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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7205 CDGB/P4A Bearing Product Overview & Core Advantages
The 7205 CDGB/P4A is a single row angular contact ball bearing designed for exceptional precision and performance in demanding applications. Engineered to a P4A tolerance class, this bearing offers superior running accuracy. Its key advantage lies in its ability to accommodate combined loads, specifically high-precision axial loads in one direction, making it ideal for applications requiring high rigidity and precise shaft positioning. The Universal Matchable (SU) designation allows for flexible mounting in sets to achieve specific preload and stiffness characteristics.
7205 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7205 | Basic bearing series, indicating a 25mm bore and 52mm outside diameter. |
| C | Specifies a 15° contact angle, optimized for high axial load capacity. |
| DGB | Indicates a Light preload (Class B) and that the bearing is part of a Universal Matchable (SU) set. |
| P4A | Denotes an ultra-precision tolerance class, ensuring minimal runout and vibration for high-speed, high-accuracy applications. |
7205 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance standards, this bearing provides exceptional dimensional stability and running accuracy, which is critical for minimizing vibration and maintaining precise shaft alignment under load.
- Optimized Load Capacity: The 15° contact angle and robust chrome steel construction are engineered to handle significant axial loads in one direction while also supporting radial loads, making it suitable for combined load scenarios.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 100,500 rpm. This, combined with the precision internal geometry, makes it an excellent high-speed bearing.
- Universal Matching (SU): As a Universal Matchable bearing, multiple 7205 CDGB/P4A units can be mounted together in a back-to-back (DB) or face-to-face (DF) arrangement to create a rigid bearing system that can accommodate complex load patterns and increase overall system stiffness.
7205 CDGB/P4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications where accuracy, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and high-performance automotive systems.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Such as centrifuges and high-speed scanners.
- Aerospace Actuation Systems: Where reliability and precision under load are critical.
