7210 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7210 CD/P4ADBC
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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7210 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7210 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched set is preloaded to Moderate (Class C) specifications, ensuring optimal stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads—simultaneously supporting significant radial and axial forces in both directions. Manufactured to P4A tolerance class, it delivers superior running accuracy, making it ideal for high-speed, high-precision machinery where reliability is paramount.
7210 CD/P4ADBC 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 | 15° contact angle, optimized for combined loads. |
| D | Duplex (two bearings in a set). |
| DB | Back-to-Back arrangement for high moment rigidity. |
| P4A | Precision tolerance class for high running accuracy. |
| Open | No seals/shields, suitable for controlled environments and lubrication systems. |
7210 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads, which is critical for maintaining precision under heavy combined loads.
- Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 16,380 lbf, this bearing is engineered to handle substantial radial and bidirectional axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the open design and factory lubrication contribute to a high limiting speed of 46,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, OD, and width, ensuring exceptional running accuracy and consistent performance in demanding applications.
7210 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles for milling, grinding, and turning centers
- High-frequency Spindles in PCB drilling and routing machines
- Precision Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
- Medical and Laboratory Equipment requiring high-speed and accuracy
