S71920 CD/P4ATGC
Sealed Super Precision Angular Contact Ball Bearings
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S71920 CD/P4ATGC Bearing Product Overview & Core Advantages
The S71920 CD/P4ATGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in sets of three, it enables optimized preload configurations for superior system performance. This sealed bearing features P4A super-precision tolerances and moderate preload (Class C), delivering outstanding running accuracy and stiffness while accommodating combined radial and axial loads. Its compact design and phenolic cage make it ideal for high-speed operation up to 16,250 rpm.
S71920 CD/P4ATGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71920 | Precision angular contact ball bearing series with 100mm bore, 140mm OD |
| CD | 15° contact angle design for optimal load distribution |
| P4A | Super precision tolerance class exceeding ABEC 7 standards |
| TGC | Special grease lubrication for high-speed applications |
S71920 CD/P4ATGC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with 15° contact angle and universal matching capability enables precise preload adjustment, delivering exceptional stiffness under combined radial and axial loads. With dynamic load rating of 29,250 lbf and static load rating of 45,000 lbf, this bearing maintains stability in demanding applications.
High-Speed Performance: The phenolic cage and optimized grease lubrication system enable reliable operation at limiting speeds of 16,250 rpm. The lightweight cage material reduces centrifugal forces while maintaining dimensional stability at elevated temperatures.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for precision applications. The sealed construction provides contamination protection while the chrome steel components ensure long-term dimensional stability.
S71920 CD/P4ATGC Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and optical systems
- High-Speed Motors - Servo motors and spindle drives
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and actuator mechanisms
