7206 ACD/HCP4ADFB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7206 ACD/HCP4ADFB
Basic Information
System of measurement
Metric
Weight
0.34 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
72.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7206 ACD/HCP4ADFB Bearing Product Overview & Core Advantages
The 7206 ACD/HCP4ADFB is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This matched set features a Face-to-Face (DF) arrangement and a Light preload (Class B), delivering superior system rigidity and rotational accuracy. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed capabilities, with a limiting speed of 72,500 rpm. Operating within a temperature range of -30°C to 110°C, this bearing is pre-lubricated for immediate use and is engineered to handle combined loads efficiently, making it ideal for high-precision, high-reliability machinery.
7206 ACD/HCP4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series, 30mm bore, 62mm OD, 32mm width. |
| ACD | Angular Contact design with a 25° contact angle. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls. |
| P4A | High precision tolerance class (equivalent to ABEC 7). |
| DF | Duplex Face-to-Face: Matched set arrangement of two bearings. |
| B | Light preload classification. |
7206 ACD/HCP4ADFB Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The duplex Face-to-Face (DF) arrangement and applied light preload create a highly rigid bearing system, minimizing axial and radial deflection under load for exceptional positional accuracy.
- Superior High-Speed Performance: The combination of ceramic balls (reducing centrifugal forces and friction) and a lightweight phenolic cage allows for very high limiting speeds (72,500 rpm), reducing heat generation and energy loss.
- Excellent Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously, with dynamic and static load ratings of 8482 lbf and 6862 lbf respectively.
- Precision Operation: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications demanding smooth and precise rotation.
- Reduced Maintenance: The bearing is supplied pre-lubricated, facilitating easy installation and providing immediate, reliable operation.
7206 ACD/HCP4ADFB Bearing Typical Application Areas
This high-performance duplex angular contact ball bearing is ideally suited for:
- High-Frequency CNC Spindles for machining centers and grinders
- Precision Rotary Tables and indexing heads
- High-Speed Motors and turbomachinery
- Advanced Medical Equipment spindles (e.g., dental drills, lab centrifuges)
- Aerospace Actuation Systems and instrumentation
