S7009 CD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7009 CD/P4ADBB Bearing Product Overview & Core Advantages
The S7009 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair configuration delivers superior performance in handling combined radial and axial loads from both directions. Manufactured to P4A tolerance class, it offers extremely tight dimensional control for high-precision machinery. The phenolic cage and factory-applied grease lubrication ensure reliable high-speed operation up to 46,000 rpm, making it an ideal solution for demanding applications where high rigidity and precision are paramount.
S7009 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- S7009: Basic bearing designation with 45mm bore diameter
- C: 15° contact angle optimized for combined loads
- D: Duplex bearing arrangement
- P4A: Ultra-precision tolerance class exceeding ABEC 7 standards
- DB: Back-to-back mounting configuration for maximum moment rigidity
- B: Light preload (Class B) for optimal performance under high speeds
S7009 CD/P4ADBB Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system capable of withstanding significant moment loads and combined radial and axial forces. This configuration provides stable shaft positioning under complex loading conditions.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration. The 15° contact angle is optimized for applications requiring both radial and axial load capacity.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling limiting speeds of 46,000 rpm. The lightweight construction minimizes inertial effects during acceleration and deceleration.
Superior Material Quality: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
S7009 CD/P4ADBB Bearing Typical Application Areas
The S7009 CD/P4ADBB excels in precision applications requiring high-speed operation and exceptional rigidity:
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- High-Speed Machining Centers: CNC equipment requiring minimal thermal growth
- Precision Gearboxes: Industrial transmission systems
- Robotic Arm Joints: Precision automation equipment
- Medical Equipment Spindles: Dental drills and surgical tools
- Aerospace Actuators: Flight control systems and auxiliary power units
