S71920 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71920 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71920 ACB/HCP4ADGA is a super-precision double row angular contact ball bearing engineered for the most demanding applications. Its universal matchable (SU) design allows for flexible mounting arrangements while maintaining exceptional running accuracy. Featuring a 25° contact angle and ceramic ball construction, this bearing delivers superior high-speed performance and extended service life. The combination of P4A tolerance class and extra light preload (Class A) ensures minimal vibration and optimal rotational accuracy, making it ideal for high-precision spindle systems requiring uncompromising reliability and high rigidity.
S71920 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings |
| 1920 | Bore diameter: 100 mm, Outside diameter: 140 mm, Width: 40 mm |
| ACB | Contact angle: 25°, Universal matchable design |
| HCP4A | P4A tolerance class (higher than ABEC 7), phenolic cage |
| DGA | Sealed on both sides, prelubricated with grease |
S71920 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
Double Row Design for Enhanced Rigidity: The two rows of ceramic balls arranged in a back-to-back configuration provide exceptional stiffness and stability, effectively resisting moment loads and maintaining precision under combined loading conditions.
Superior Load Capacity: With a 25° contact angle, this bearing optimally handles combined radial and axial loads in both directions, making it suitable for applications with complex loading patterns.
Exceptional High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and phenolic cage (lightweight, self-lubricating) enables limiting speeds up to 10,000 rpm, significantly higher than standard steel ball bearings.
Maintenance-Free Operation: The integrated seals and factory-applied high-performance grease provide long-term lubrication within the specified temperature range of -30°C to 110°C, ensuring reliable operation without additional maintenance.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
S71920 ACB/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
- High-Speed Automation: Robotics, pick-and-place systems, and precision assembly equipment
