S7206 ACD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7206 ACD/P4ADBA Bearing Product Overview & Core Advantages
The S7206 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads from both directions. Manufactured to P4A tolerance class and preloaded to Extra Light (Class A), it delivers high running accuracy, making it ideal for high-speed spindles and other precision machinery where reliability is critical.
S7206 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series
- 206: Standard dimension series (30mm bore, 62mm OD, 32mm width)
- AC: Angular Contact design with 25° contact angle
- D: Duplex Back-to-Back (DB) matched arrangement
- P4A: High precision tolerance class (superior to ABEC 7)
- DB: Duplex Back-to-Back mounting
- A: Extra Light preload classification
S7206 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains shaft positioning accuracy under combined loading conditions.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for smooth operation.
Optimized High-Speed Capability: The phenolic resin cage and grease lubrication enable reliable operation at limiting speeds up to 100,500 rpm, while the 25° contact angle provides balanced load capacity.
Durable Construction: Manufactured from chrome steel for both rings and balls, this bearing offers excellent wear resistance and long service life in precision applications.
S7206 ACD/P4ADBA Bearing Typical Application Areas
The S7206 ACD/P4ADBA is specifically engineered for high-precision, high-speed applications including:
- Machine tool spindles and high-speed machining centers
- Precision grinding spindles and dental equipment
- High-frequency motor spindles and robotics
- Aerospace positioning systems and instrumentation
- Semiconductor manufacturing equipment and optical systems
