S7212 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7212 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.82 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
10462 lbf
Limiting speed
32.5 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
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:
$ 80.8
/ each
In Stock
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S7212 CDGA/P4A Bearing Product Overview & Core Advantages
The S7212 CDGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single bearing configured for universal matching (SU), it can be paired with another identical bearing to form a preloaded duplex set, enabling it to handle combined radial and axial loads simultaneously. Manufactured to the exacting P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed and high-precision applications where maximum system rigidity and minimal runout are critical.
S7212 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CDGA | Indicates a specific combination of high contact angle and extra light preload (Class A). This configuration provides optimal stiffness for the bearing size while minimizing friction and heat generation at high speeds. |
| P4A | Denotes an ultra-precision tolerance class superior to ABEC 7. This ensures extremely tight dimensional and running accuracy for applications requiring superior performance. |
S7212 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle and extra light preload provides high axial and radial stiffness, effectively supporting combined loads. The robust construction is evidenced by its dynamic load rating of 12,870 lbf.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry contribute to a high limiting speed of 32,500 rpm.
- Precision Engineering: Manufactured to P4A tolerances, this bearing ensures minimal vibration and precise shaft positioning, which is critical for the accuracy of the overall system.
- Sealed & Lubricated for Life: The sealed design retains factory-fill grease and excludes contaminants, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S7212 CDGA/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance machinery, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps & Compressors
- Aerospace & Defense Systems
