7206 CDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7206 CDGB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.17 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
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5445 lbf
Radial static load rating
3600 lbf
Limiting speed
71.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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7206 CDGB/HCP4A Bearing Product Overview & Core Advantages
The 7206 CDGB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and speed. As a single bearing from a universally matchable set, it is designed to accommodate combined loads, providing high rigidity and stable performance. Its construction with ceramic balls and a P4A super-precision tolerance class makes it ideal for high-speed spindles and other precision machinery where minimal runout and thermal stability are critical.
7206 CDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series, 30mm bore, 62mm OD. |
| C | 15° contact angle. |
| DG | Universal matching designation for duplex pairs. |
| B | Light preload (Class B). |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4. |
7206 CDGB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (71,500 rpm) and provides superior performance in demanding environments.
- High Rigidity & Precision: The P4A tolerance class ensures extremely tight dimensional and running accuracy, which is essential for applications requiring high rotational precision and minimal vibration.
- Optimized Preload: The built-in light preload (Class B) eliminates internal clearance, resulting in greater shaft rigidity, precise rotational accuracy, and reduced noise and vibration levels.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at high speeds and offers excellent dimensional stability.
- Universal Matchability (SU): This bearing is designed to be universally matchable with other bearings from the same set, allowing for flexible mounting configurations (DB, DF, DT) to handle various combined load conditions.
7206 CDGB/HCP4A Bearing Typical Application Areas
The 7206 CDGB/HCP4A is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- High-Frequency Spindles: PCB drilling and routing machines.
