S7009 CE/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
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S7009 CE/HCP4ADBB Bearing Product Overview & Core Advantages
The S7009 CE/HCP4ADBB is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and rotational accuracy. This sealed metric bearing features a back-to-back (DB) matched arrangement of two bearings, enabling it to withstand significant combined radial and axial loads from both directions. Manufactured to a P4A tolerance class and preloaded to Light / Class B, it delivers superior running accuracy and stiffness, making it ideal for high-speed spindles and other precision machinery where reliability and performance are critical.
S7009 CE/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7009 | Bearing series and size designation (45mm bore, 75mm OD) | Defines the core bearing dimensions. |
| CE | Hybrid Ceramic Balls (Silicon Nitride) | Reduces weight and inertia, lowers operating temperature, and enhances high-speed performance and service life. |
| HC | Phenolic Resin (Polyamide) Cage | Offers excellent strength-to-weight ratio, reduced friction, and superior guidance in high-speed applications. |
| P4A | High Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for superior system performance. |
| DB | Duplex Back-to-Back Arrangement | Provides high rigidity and can accommodate moment loads and axial loads in both directions. |
S7009 CE/HCP4ADBB Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The duplex back-to-back (DB) configuration creates a rigid bearing system that effectively resists moment loads and can handle significant combined loads. The 15° contact angle is optimized for supporting substantial axial loads alongside radial loads.
Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage significantly reduces centrifugal forces and inertial mass. This allows the bearing to achieve a high limiting speed of 46,000 rpm with stable operation and minimal heat generation.
Pre-optimized for Precision: Supplied as a matched set with a light preload (Class B), this bearing eliminates internal clearance, ensuring high rotational accuracy and system stiffness from the moment of installation without requiring complex adjustment.
Sealed and Lubricated for Life: The sealed design with grease lubrication protects against contamination and retains lubricant, making the unit suitable for applications where re-lubrication is difficult. It operates effectively within a temperature range of -30°C to 110°C.
S7009 CE/HCP4ADBB Bearing Typical Application Areas
This high-performance duplex angular contact ball bearing is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motor Spindles: Where maximum speed and rigidity are required.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other critical rotating assemblies.
- Medical Equipment: Dental handpieces and high-speed laboratory centrifuges.
