S7210 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7210 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.94 kg
Tolerance class
P4A
Seal type
Sealed
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
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
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
In Stock
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S7210 CD/P4ADGA Bearing Product Overview & Core Advantages
The S7210 CD/P4ADGA is a super-precision double row angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing excels in handling combined radial and axial loads from both directions simultaneously. Its compact double-row design provides a high degree of stiffness, making it an ideal choice for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount.
S7210 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7210 | Basic bearing designation, indicating a double row angular contact ball bearing with a 50 mm bore. |
| CD | Specific internal design with a 15° contact angle, optimized for high-speed operation and universal matching. |
| P4A | Indicates a super-precision tolerance class with enhanced dimensional and running accuracy. |
| DGA | Signifies a sealed bearing, pre-lubricated with grease for long-term, maintenance-free operation. |
S7210 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and robust construction provide superior radial and axial stiffness, enabling the bearing to support significant combined loads with minimal deflection.
- Super-Precision Performance: Manufactured to P4A tolerance class standards, this bearing ensures extremely low runout and vibration, which is critical for high-precision applications.
- Optimized High-Speed Capability: The lightweight phenolic cage and 15° contact angle are engineered to reduce centrifugal forces and friction, supporting a high limiting speed of 34,000 rpm.
- Maintenance-Free Operation: The integral seals and factory-applied grease lubrication protect against contamination and provide a long service life without the need for re-lubrication within the specified temperature range of -30°C to 110°C.
- Universal Matchability (SU): Bearings are universally matchable, allowing for simplified mounting in pairs or sets to achieve specific preload and stiffness requirements without selective assembly.
S7210 CD/P4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery, including:
- Machine Tool Spindles (e.g., for CNC milling and grinding machines)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arms and Precision Positioning Systems
