S71915 CD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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S71915 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The S71915 CD/HCP4ADBA is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and rotational accuracy. This back-to-back (DB) matched set features a P4A tolerance class and is preloaded to an extra light (Class A) specification, ensuring minimal runout and superior performance under combined loads. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed capabilities and reduced rotational mass, making it ideal for high-precision, high-reliability spindles and machinery.
S71915 CD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Precision angular contact ball bearing series with 75mm bore diameter. |
| CD | Duplex arrangement in a Back-to-Back (DB) configuration. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls. |
| P4A | Ultra-high precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Duplex Back-to-Back mounting, providing high moment rigidity. |
| A | Specifies the extra light preload level. |
S71915 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional operational stability.
- Superior High-Speed Performance: The combination of lightweight ceramic balls (Si3N4) and a phenolic resin cage significantly reduces centrifugal forces and inertial mass, enabling a high limiting speed of 28,000 rpm and lower operating temperatures.
- Enhanced Load Capacity: With a 15° contact angle and a double-row equivalent design, this bearing set is engineered to handle significant combined radial and axial loads from both directions simultaneously.
- Precision & Longevity: Manufactured to P4A tolerance class with a sealed design and pre-lubrication, it delivers ultra-precise rotation, protects against contamination, and offers a long, maintenance-free service life within its specified temperature range.
S71915 CD/HCP4ADBA Bearing Typical Application Areas
This high-performance bearing is specifically engineered for advanced machinery requiring the utmost precision and speed, including:
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Main Shafts
- High-Speed Robotic Drives and actuators
- Advanced Medical & Dental Equipment spindles
- Aerospace & Defense instrumentation and control systems
