S71909 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71909 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S71909 CE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set features a P4A super-precision tolerance class and a 15° contact angle, enabling it to handle combined radial and axial loads simultaneously with high rigidity. The use of ceramic balls and a phenolic cage contributes to its superior high-speed capabilities, low heat generation, and extended service life, making it ideal for high-reliability spindle systems.
S71909 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series
- 1909: Standard size designation (45mm bore, 68mm OD, 24mm width)
- CE: Ceramic balls (Silicon Nitride)
- HC: Phenolic resin cage
- P4A: Super precision tolerance class (ABEC 7/ISO P4 equivalent)
- A: Extra light preload
- DB: Duplex Back-to-Back arrangement
S71909 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration provides exceptional stiffness, enabling precise shaft positioning and excellent resistance to moment loads. The bearing set can accommodate significant combined loads with optimized stress distribution.
High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and phenolic cage allows for limiting speeds up to 46,000 rpm. The lightweight construction minimizes friction and heat generation at high rotational speeds.
Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior rotational accuracy.
Pre-lubricated & Sealed: Factory-filled with high-performance grease suitable for a temperature range of -30°C to 110°C, providing long-term lubrication in sealed applications.
S71909 CE/HCP4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Instrumentation: Measuring equipment, optical scanners
- High-Speed Motors: Spindle motors, high-frequency applications
- Aerospace Components: Gyroscopes, navigation systems
- Medical Equipment: Dental handpieces, surgical tools
