S71920 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S71920 CD/P4ADGA Bearing Product Overview & Core Advantages
The S71920 CD/P4ADGA is a precision angular contact ball bearing designed for high-performance industrial applications. This sealed bearing features an extra light preload (Class A) and P4A tolerance class, ensuring exceptional running accuracy and rotational precision. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing excellent operational stability. Engineered to handle combined radial and axial loads simultaneously, this bearing delivers high rigidity and reliable performance in demanding high-speed applications.
S71920 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CD | 15° contact angle with optimized internal design | Enhanced axial load capacity and high-speed performance |
| P4A | High precision tolerance class | Superior running accuracy and minimal vibration |
| DGA | Sealed design with grease lubrication | Contamination protection and maintenance-free operation |
S71920 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance in precision applications.
Optimized Load Capacity: With a 15° contact angle and 26 chrome steel balls of 12.7mm diameter, this bearing delivers outstanding radial dynamic load rating of 21,938 lbf and static load rating of 29,700 lbf, capable of handling significant combined loads.
High-Speed Performance: The phenolic cage material and optimized internal design enable a limiting speed of 16,250 rpm, making it suitable for high-speed spindle applications requiring smooth operation.
Maintenance-Free Operation: The sealed construction with factory-applied grease lubrication provides reliable performance across a temperature range of -30°C to 110°C, eliminating the need for relubrication in most applications.
S71920 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and CNC equipment requiring exceptional running accuracy
- High-Speed Spindles: Grinding machines, milling machines, and other high-speed rotating equipment
- Precision Instruments: Measuring devices, optical equipment, and laboratory instruments demanding minimal vibration
- Industrial Pumps & Compressors: Applications requiring reliable performance under combined radial and axial loads
- Robotics & Automation: Precision positioning systems and robotic joints needing high rigidity and accuracy
