S71912 CB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71912 CB/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.38 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
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
30
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3780 lbf
Radial static load rating
3960 lbf
Limiting speed
32.5 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
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S71912 CB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71912 CB/HCP4ADGA is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy, rigidity, and speed. Engineered to simultaneously handle combined loads (radial and bidirectional axial loads), its compact design offers a robust solution for high-reliability scenarios. Featuring a P4A tolerance class and ceramic balls, this bearing delivers superior performance in demanding operational environments, ensuring long-term stability and reduced maintenance needs.
S71912 CB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CB | Specific internal clearance and preload | Optimized for specific application requirements |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced weight, higher speed capability, and longer service life |
| P4A | High Precision Tolerance Class | Exceptional running accuracy for precision machinery |
| DGA | Contact angle and universal matching designation (SU) | Consistent performance when used in pairs; handles combined loads effectively |
S71912 CB/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior stiffness, enabling stable support under significant combined loads and bidirectional axial forces.
- Enhanced Speed Performance: The phenolic resin cage and ceramic balls contribute to a low friction coefficient and reduced centrifugal forces, allowing for a high limiting speed of 32,500 rpm.
- Precision & Longevity: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures minimal runout and vibration. The hybrid ceramic construction offers excellent wear resistance and operational life.
- Sealed & Pre-lubricated: The sealed design with grease lubrication protects against contamination and provides maintenance-free operation within a wide temperature range (-30°C to 110°C).
S71912 CB/HCP4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps & Compressors
- Advanced Robotics and Automation Equipment
