7205 ACD/P4ATGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7205 ACD/P4ATGA
Basic Information
System of measurement
Metric
Weight
0.38 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
45 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
6322 lbf
Radial static load rating
4680 lbf
Limiting speed
71.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
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
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In Stock
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7205 ACD/P4ATGA Bearing Product Overview & Core Advantages
The 7205 ACD/P4ATGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered as a universal matchable (SU) bearing, it is supplied in sets of three for simplified assembly into preloaded arrangements. Its 25° contact angle and P4A tolerance class make it ideally suited for managing combined loads, providing robust support for both radial and axial forces. The phenolic cage and open design contribute to its high-speed capabilities, making it a superior choice for high-precision, high-reliability machinery.
7205 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7205 ACD/P4ATGA provides detailed technical specifications:
- 7205: Basic series designation indicating a 25mm bore, 52mm OD, and 45mm width.
- A: Denotes a 25° contact angle.
- CD: Signifies Universal Matchable (SU) bearings supplied in a set. They can be arranged in tandem, back-to-back, or face-to-face configurations to achieve different stiffness and load characteristics.
- P4A: Indicates a super-precision tolerance class with enhanced running accuracy, tighter dimensional tolerances, and controlled preload (Extra light / Class A).
- TGA: Likely refers to specific manufacturer designations for cage material (Phenolic) and lubrication. The phenolic cage is instrumental for high-speed performance.
7205 ACD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching capability allow for the creation of preloaded sets that deliver extremely high rigidity. This enables the bearing to effectively handle significant combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces and inertial drag, contributing directly to a high limiting speed of 71,500 rpm. The open design facilitates efficient lubrication and cooling.
- Exceptional Precision: Manufactured to P4A super-precision standards, this bearing ensures minimal runout and vibration, which is critical for applications requiring supreme rotational accuracy.
- Optimized for Preload: The Extra light (Class A) preload and matched set supply simplify the assembly of spindle units, ensuring consistent performance and extended service life.
7205 ACD/P4ATGA Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace Control Systems
- Medical and Dental Handpieces
- High-Speed Pumps and Compressors
