S71909 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71909 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71909 CD/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a universal matchable (SU) bearing supplied in a set of two, it is engineered to accommodate combined radial and axial loads simultaneously. Its construction with a phenolic cage and ceramic balls enables exceptional limiting speeds and operational stability, making it ideal for high-precision spindles where maximum performance and reliability are critical.
Model Code Breakdown
- S7: High-precision bearing series
- 1909: Standard size designation (45mm bore, 68mm OD, 24mm width)
- CD: Universal Matchable (SU) pair, supplied as a set of two bearings
- HC: Hybrid Ceramic - features ceramic balls with steel rings
- P4A: Super-precision tolerance class (exceeds ABEC 7/ISO P4)
- DGA: Pre-filled with a specific high-performance grease
S71909 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperatures, and provides excellent wear resistance, contributing to extended service life at high speeds.
Phenolic Resin Cage: The lightweight phenolic cage offers superior strength and dimensional stability at high rotational speeds, ensuring reliable performance under demanding conditions.
Super-Precision P4A Tolerance: Manufactured to P4A tolerance class with extremely tight dimensional and running accuracy, this bearing delivers exceptional rotational precision and minimal vibration.
15° Contact Angle & Universal Matching: The 15° contact angle provides optimal balance between radial and axial load capacity. The universal matchable (SU) design allows bearings to be mounted in any combination (back-to-back, face-to-face, or tandem) without preload adjustment.
Pre-lubricated & Ready for Service: Factory-filled with specialty grease suitable for a temperature range of -30°C to 110°C, ensuring immediate operation without additional lubrication.
S71909 CD/HCP4ADGA Bearing Typical Application Areas
The S71909 CD/HCP4ADGA excels in applications requiring ultra-high precision and speed:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Robotics: High-accuracy robotic arms and joints
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical drills, and imaging devices
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
