7210 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7210 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.46 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
20 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
9518 lbf
Radial static load rating
7312 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
No drawings available at the moment, will be launched soon
Price:
$ 101.68
/ each
In Stock
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7210 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7210 ACDGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single-row bearing with a 25° contact angle, it excels at supporting combined loads, particularly high axial loads in one direction. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and superior rotational accuracy. Its phenolic cage and optimized internal geometry contribute to its high-speed capabilities, making it an ideal solution for high-rigidity and high-speed applications where precision is paramount.
7210 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing series; 10mm bore code (50mm actual bore) |
| AC | Angular Contact design |
| DGA | Universal Matchable (SU) bearing, designed for preloaded duplex arrangements |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4 standards |
7210 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust chrome steel construction provide excellent resistance to deformation under heavy axial and combined loads, with a dynamic load rating of 9518 lbf and static load rating of 7312 lbf.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a limiting speed of 46,000 rpm. The optimized internal geometry minimizes friction and heat generation.
- Exceptional Precision: Manufactured to P4A tolerance class with tight bore and OD tolerances (within -0.004mm to 0), ensuring minimal runout and vibration for ultra-precise applications.
- Universal Matching Design: As a Universal Matchable (SU) bearing, it can be preloaded in duplex pairs (back-to-back, face-to-face, or tandem) to achieve specific stiffness and accuracy requirements without selective matching.
7210 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Instrumentation: Measuring equipment, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors & Spindles: Electric motor spindles, high-frequency spindles, and turbo-molecular pumps.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment demanding high accuracy and reliability.
