S71904 CE/HCP4ADBA
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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71904 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S71904 CE/HCP4ADBA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. This duplex back-to-back (DB) matched set delivers exceptional rotational accuracy and stability, capable of withstanding combined radial and axial loads from both directions. Its construction with ceramic balls and a phenolic cage enables superior performance in high-speed spindle systems, offering reduced friction, lower operating temperatures, and extended service life.
Model Code Breakdown
| S7 | Series designation for high-precision angular contact ball bearings |
| 1904 | Bore diameter: 20 mm, Outside diameter: 37 mm, Width: 18 mm |
| CE | Contact angle: 15° |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | Precision class P4A (ABEC 7 equivalent), with enhanced running accuracy |
| DB | Duplex Back-to-Back arrangement for high moment rigidity |
| A | Extra light preload for optimal high-speed performance |
S71904 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and provides stable support for spindles. This arrangement allows the bearing set to handle significant combined radial and axial loads from both directions simultaneously.
Superior High-Speed Performance: The combination of ceramic balls (lower density than steel) and a lightweight phenolic cage significantly reduces centrifugal forces, enabling limiting speeds up to 75,000 rpm. This makes the bearing ideal for high-frequency spindle applications.
Enhanced Precision & Longevity: Manufactured to P4A tolerance class with precise dimensional control, this bearing ensures minimal runout and vibration. The hybrid ceramic design provides excellent wear resistance and operates effectively within a temperature range of -30°C to 110°C.
Optimized Lubrication: Factory-preloaded with high-performance grease suitable for the specified speed and temperature range, ensuring immediate operational readiness and long-term reliability.
S71904 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision duplex bearing set is specifically engineered for applications requiring extreme rotational accuracy and high-speed capability:
- CNC machining center spindles
- High-frequency milling spindles
- Precision grinding spindles
- PCB drilling and routing machines
- Medical device manufacturing equipment
- Aerospace component machining systems
- High-speed robotic spindles
