7210 CD/P4ADBG23
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7210 CD/P4ADBG23
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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
15300 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
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 CD/P4ADBG23 Bearing Product Overview & Core Advantages
The 7210 CD/P4ADBG23 is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered for applications demanding exceptional rotational accuracy and rigidity, this preloaded, matched pair is designed to handle combined radial and axial loads simultaneously. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The phenolic cage and optimized internal geometry contribute to its outstanding high-speed performance and operational stability.
7210 CD/P4ADBG23 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing designation: 50 mm bore, 90 mm OD, 40 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is part of a duplex pair (two bearings mounted together). |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DB | Specifies the back-to-back mounting arrangement, which provides high moment rigidity. |
| G23 | Indicates the specific preload level applied to the matched set for optimal stiffness and performance. |
7210 CD/P4ADBG23 Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing set's resistance to moment loads and providing exceptional system rigidity.
- Optimized Load Distribution: The 15° contact angle is engineered to efficiently handle combined loads, offering a balanced performance for high-speed applications where both radial and axial forces are present.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's high limiting speed of 46,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, this bearing guarantees smooth, quiet, and vibration-free operation.
- Preloaded for Immediate Performance: The set is supplied with a defined preload (G23), eliminating internal clearance and ensuring immediate high stiffness and positional accuracy upon installation, without requiring complex adjustment.
7210 CD/P4ADBG23 Bearing Typical Application Areas
This precision duplex angular contact ball bearing is ideally suited for demanding applications in:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Where high rigidity and accurate shaft positioning are critical.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and high rotational accuracy.
- Industrial Pumps and Compressors: For handling combined loads in robust machinery.
- Medical and Laboratory Equipment: Such as centrifuges and other high-speed precision instruments.
