S71900 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71900 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71900 CD/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a matched pair bearing set, it delivers exceptional rotational accuracy and stability. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy from its P4A tolerance class, and outstanding high-speed performance enabled by its ceramic balls and phenolic cage. This compact and lightweight bearing is engineered for maximum reliability in precision machinery.
S71900 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Super-precision bearing series |
| 1900 | Dimension series (10mm bore, 22mm OD) |
| CD | Universal Matchable (SU) bearing pair with a specific preload |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | High-precision tolerance class (equivalent to ABEC 7) |
| DGA | Sealed on both sides and pre-greased |
S71900 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds compared to all-steel bearings. This construction also provides superior resistance to wear and a longer service life.
High Rigidity & Load Capacity: The 15° contact angle and the matched pair (SU) arrangement create a highly rigid bearing system capable of supporting significant combined loads. The Extra light preload (Class A) ensures precise shaft positioning and minimizes runout.
Exceptional High-Speed Performance: The combination of the lightweight phenolic cage and ceramic balls allows the bearing to achieve a remarkable limiting speed of 185,000 rpm. This makes it ideal for ultra-high-speed spindles.
Maintenance-Free Operation: The integrated seals (DGA) effectively retain grease and exclude contaminants. With pre-applied grease lubrication, the bearing is ready for immediate, long-term operation within its specified temperature range of -30°C to 110°C.
S71900 CD/HCP4ADGA Bearing Typical Application Areas
The S71900 CD/HCP4ADGA is the bearing of choice for applications requiring the utmost in precision and speed:
- High-Frequency CNC Spindles for PCB drilling and precision milling
- Precision Grinding Spindles
- High-speed shafts in Semiconductor Manufacturing Equipment
- Rotary assemblies in Aerospace Gyroscopes and Instrumentation
- Turbochargers and other high-speed Automotive Racing Components
