7210 ACD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7210 ACD/P4ADT
Basic Information
System of measurement
Metric
Weight
0.92 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
14738 lbf
Limiting speed
46 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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7210 ACD/P4ADT Bearing Product Overview & Core Advantages
The 7210 ACD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex tandem (DT) arrangement consists of two preloaded bearings, delivering superior performance under combined loads. Engineered to a P4A tolerance class, it offers extremely tight dimensional control for high-precision machinery. Its 25° contact angle is optimized to handle significant thrust loads in one direction, making it an ideal solution for high-speed spindles and other precision equipment where maximum stiffness and rotational accuracy are critical.
7210 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing designation indicating a 50 mm bore, 90 mm OD, and 40 mm width. |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| D | Duplex configuration. In this case, it signifies a preloaded set. |
| P4A | High precision tolerance class with enhanced running accuracy requirements. |
| DT | Tandem arrangement, where two bearings are mounted side-by-side to increase axial load capacity in one direction. |
7210 ACD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 25° contact angle create an exceptionally rigid bearing system capable of supporting high combined loads, particularly heavy thrust loads in one direction.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Optimized High-Speed Operation: The lightweight phenolic cage reduces centrifugal forces, contributing to stable operation at the high limiting speed of 46,000 rpm. The open design allows for efficient lubrication management.
- Superior Material Construction: Made from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational life under demanding conditions.
7210 ACD/P4ADT Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: For PCB drilling, semiconductor manufacturing, and other high-accuracy processes.
- High-Frequency Motors and other machinery where axial preload and extreme rigidity are required.
