7206 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7206 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.39 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8482 lbf
Radial static load rating
6862 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7206 ACD/P4ADBA Bearing Product Overview & Core Advantages
The **7206 ACD/P4ADBA** is a **precision duplex angular contact ball bearing** set configured in a **Back-to-Back (DB) arrangement**. Engineered to the exacting **P4A tolerance class**, this bearing set is designed for applications demanding **exceptional rotational accuracy**, **high rigidity**, and the ability to handle **combined loads**. The **Extra light preload (Class A)** ensures minimal deflection under operational stresses, making it ideal for high-speed spindles and other precision machinery where stability is paramount. Its duplex construction provides superior axial and moment load capacity compared to single bearings.
7206 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series and size designation (30mm bore, 62mm OD). |
| AC | **Angular Contact** ball bearing with a 25° contact angle. |
| D | Indicates a **Duplex** (two-bearing) set. |
| DB | Specifies the **Back-to-Back** matched arrangement. |
| P4A | Denotes the **high-precision tolerance class**, exceeding ABEC-7 standards. |
7206 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The **duplex back-to-back configuration** creates a wide, stable support system that significantly increases **rigidity** and enables the bearing set to withstand substantial **combined radial and axial loads** in both directions, as well as moment loads.
- Precision & High-Speed Performance: Manufactured to **P4A tolerances** for minimal runout and vibration. The lightweight **phenolic resin cage** and optimized internal geometry contribute to a high **limiting speed** of 100,500 rpm, ensuring smooth operation.
- Optimized Preload: The **Extra light preload (Class A)** is factory-set to eliminate internal clearance, providing precise shaft positioning and enhanced system stiffness without generating excessive heat at high speeds.
- Material Quality: Constructed from high-grade **chrome steel** for rings and balls, ensuring long service life and consistent performance under demanding conditions.
7206 ACD/P4ADBA Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- High-Frequency Motors & Spindles: Where high rotational speed and accuracy are critical.
- Precision Instrumentation: In applications requiring ultra-precise rotational movement.
- Robotics: Particularly in high-accuracy robotic arm joints and rotary units.
