7006 CD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7006 CD/P4ADBD Bearing Product Overview & Core Advantages
The 7006 CD/P4ADBD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement comes as a pre-matched set, delivering superior performance under combined loads. Its P4A tolerance class and heavy preload (Class D) ensure minimal runout and high operational stability, making it ideal for high-precision, high-rigidity systems where positional accuracy is critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7006 | Basic bearing series and size designation (30mm bore, 55mm OD, 26mm width) |
| C | 15° contact angle, optimized for high axial load capacity |
| D | Heavy preload (Class D) for maximum system rigidity |
| P4A | High-precision tolerance class exceeding ABEC 7 standards |
| DB | Duplex Back-to-Back mounting arrangement for moment load resistance |
7006 CD/P4ADBD Bearing Structural Features & Performance Benefits
Optimized Rigidity and Load Capacity: The duplex back-to-back configuration creates a rigid bearing system capable of withstanding combined radial and axial loads as well as moment loads. The heavy preload eliminates internal clearance, significantly enhancing system stiffness and rotational accuracy.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on all bearing dimensions (bore, OD, width). The phenolic cage provides excellent guidance at high speeds while reducing friction and weight.
High-Speed Capability: The optimized internal geometry and phenolic cage contribute to stable operation at the specified limiting speed of 56,000 rpm. The 15° contact angle balances axial and radial load capacity for diverse operating conditions.
Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance across the operating temperature range of -30°C to 110°C.
7006 CD/P4ADBD Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- Precision Instrumentation: Measuring equipment, optical scanners, and coordinate measuring machines
- High-Speed Automation: Industrial robots, pick-and-place systems, and assembly automation
- Aerospace Systems: Gyroscopes, navigation instruments, and flight control mechanisms
- Medical Equipment: Dental handpieces, laboratory centrifuges, and diagnostic imaging systems
