S7210 CDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7210 CDGB/P4A
Basic Information
System of measurement
Metric
Weight
0.47 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
20 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
10102 lbf
Radial static load rating
7650 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7210 CDGB/P4A Bearing Product Overview & Core Advantages
The S7210 CDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with a 15° contact angle and P4A tolerance class, this bearing excels at simultaneously handling combined radial and axial loads. Its compact design, featuring a 20mm width and 50mm bore, provides a high rigidity solution in limited spaces. Pre-loaded as a Universal Matchable (SU) bearing, it is supplied in sets of two for immediate installation in precision spindle arrangements, delivering superior rotational accuracy and long-term performance stability.
S7210 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7210 | Basic bearing series designation, indicating a metric angular contact ball bearing with a 50mm bore and 90mm outside diameter. |
| CD | Signifies a 15° contact angle and specific internal geometry optimized for high-speed operation and rigid support. |
| GB | Indicates a Light preload (Class B), which reduces axial and radial play for enhanced system stiffness and precise shaft positioning. |
| P4A | Denotes an ultra-precision tolerance class with extremely tight dimensional and running accuracy tolerances, superior to ABEC 7. |
S7210 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized 15° contact angle and light preload provide superior resistance to deflection under combined loads, ensuring maximum system stiffness and positioning accuracy. With a dynamic load rating of 10,102 lbf and static rating of 7,650 lbf, it reliably handles significant radial and axial forces.
- High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation, contributing to the high limiting speed of 34,000 rpm. This makes it ideal for high-speed spindle applications.
- Precision & Durability: Manufactured from chrome steel for both rings and balls, and held to P4A precision tolerances, this bearing guarantees minimal vibration, low noise, and extended service life in precision machinery.
- Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
S7210 CDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Industrial Equipment
- Medical & Laboratory Devices: Centrifuges, dental handpieces, and precision instrumentation.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and navigation systems requiring ultra-precision.
