7205 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7205 ACDGA/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
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2925 lbf
Radial static load rating
1564 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
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
Price:
$ 63.17
/ each
In Stock
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7205 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7205 ACDGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. As a single bearing with Universal Matchable (SU) designation, it can be precisely paired with another identical bearing to form a matched set, optimizing preload and system rigidity. Its P4A tolerance class ensures ultra-precise dimensional and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The bearing features an open design and is pre-lubricated for immediate use, offering a balanced combination of high-speed capability, high rigidity, and the ability to handle combined loads.
7205 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7205 ACDGA/P4A is decoded as follows:
- 7205: Basic series designation for a single row angular contact ball bearing with a 25mm bore.
- AC: Signifies Angular Contact design with a 25° contact angle.
- D: Indicates a High Capacity internal design with a larger ball complement.
- GA: Denotes a Universal Matchable bearing. Two such bearings can be mounted in a face-to-face or back-to-back arrangement to handle combined loads effectively.
- P4A: Specifies the tolerance class, indicating very high precision for both dimensional and running accuracy, superior to standard ABEC-7 (P4) levels.
7205 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads in one direction. The high capacity (D) design, featuring 13 larger balls, further enhances its load rating and stiffness.
- Precision & High-Speed Performance: Manufactured to a P4A super-precision tolerance, this bearing ensures minimal runout and vibration. The lightweight phenolic resin cage contributes to lower centrifugal forces, enabling stable operation at the high limiting speed of 100,500 rpm.
- Universal Matching Capability: The Universal Matchable (SU/GA) feature allows for the creation of a precisely preloaded matched set of two bearings. This simplifies installation and guarantees optimal system performance, maximizing rigidity and rotational accuracy.
- Material and Lubrication: Constructed from high-grade chrome steel for both rings and balls, ensuring durability and long service life. The bearing is supplied pre-lubricated, ready for operation within its specified temperature range.
7205 ACDGA/P4A Bearing Typical Application Areas
The 7205 ACDGA/P4A is engineered for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed rotors in dental handpieces and centrifuges.
- Robotics: Precision joints and arm actuators.
