7205 ACD/P4ATBTB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7205 ACD/P4ATBTB
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
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
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
Price:
$ 154.04
/ each
In Stock
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7205 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 7205 ACD/P4ATBTB is a precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. This arrangement delivers exceptional high rigidity and stability, making it ideal for applications requiring superior running accuracy under combined loads (radial and axial). Manufactured to P4A tolerance class, it offers extremely tight dimensional control for high-precision machinery. The set is pre-lubricated and features a light preload (Class B), ensuring optimal performance from installation without additional adjustment.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7205 | Basic bearing series and size designation (25mm bore, 52mm OD). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| TBT | Triplex Back-to-Back matched set of three bearings. |
7205 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The triplex back-to-back (TBT) configuration creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, crucial for maintaining precision in demanding applications.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously.
- High-Speed Capability: The lightweight and robust phenolic cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 71,500 rpm.
- Precision Performance: The P4A tolerance class ensures minimal runout and vibration, guaranteeing high rotational accuracy and smooth operation.
- Durable Construction: Components made from chrome steel provide high fatigue life and wear resistance, suitable for a wide temperature range from -30°C to 110°C.
7205 ACD/P4ATBTB Bearing Typical Application Areas
This bearing set is engineered for high-performance applications, including:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Motors and Precision Gearboxes
- Industrial Pumps and Compressors
- Aerospace Actuation Systems and Robotic Arms
