7205 CD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7205 CD/P4ADT
Basic Information
System of measurement
Metric
Weight
0.26 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
30 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
4972 lbf
Radial static load rating
3285 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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.
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7205 CD/P4ADT Bearing Product Overview & Core Advantages
The 7205 CD/P4ADT is a duplex tandem (DT) arrangement of two angular contact ball bearings, pre-loaded and manufactured to P4A super precision tolerance class. This configuration is engineered to deliver exceptional axial rigidity and handle heavy unidirectional thrust loads with high accuracy. Its compact design, combining two bearings into a single, matched set, is ideal for applications demanding high-speed operation and uncompromising rotational precision.
7205 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7205 | Basic bearing series, indicating a 25mm bore, 52mm OD, and 15mm single bearing width. |
| C | Specifies a 15° contact angle, optimized for high thrust capacity. |
| D | Indicates the bearings are supplied as a duplex pair. |
| P4A | Denotes a super precision tolerance class with enhanced running accuracy for spindle applications. |
| DT | Signifies the Duplex Tandem arrangement, where two bearings are mounted together to increase axial load capacity in one direction. |
7205 CD/P4ADT Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle create an exceptionally rigid assembly capable of supporting very high unidirectional axial loads. The matched set ensures optimal load distribution.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the open design and factory lubrication contribute to a high limiting speed of 100,500 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight bore and outside diameter tolerances, this bearing guarantees minimal runout and superior rotational accuracy for critical machinery.
- Optimized Internal Geometry: The design, featuring 13 precision balls of 7.938mm diameter, is calculated to provide a high dynamic load rating of 4972 lbf and reliable, long-lasting performance.
7205 CD/P4ADT Bearing Typical Application Areas
This precision bearing set is specifically designed for high-performance applications, including:
- Machine Tool Spindles (e.g., high-speed milling, grinding spindles)
- Precision Gearboxes
- High-Frequency Motors
- Medical & Dental Equipment Spindles
- Aerospace Actuation Systems
