7206 CDGD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7206 CDGD/P4A
Basic Information
System of measurement
Metric
Weight
0.2 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
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7206 CDGD/P4A Bearing Product Overview & Core Advantages
The 7206 CDGD/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under a Heavy preload (Class D), this bearing provides maximum shaft support and is optimized for high-speed operation. Its universal matching (SU) capability allows for flexible mounting in sets of three to handle complex combined loads, including significant radial and axial forces. Manufactured to the stringent P4A tolerance class, it is the ideal choice for high-performance spindles and other precision machinery.
7206 CDGD/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7206 CDGD/P4A is decoded as follows:
- 7206: Basic series designation for a 30mm bore, 62mm OD angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high-speed performance.
- D: Indicates a Heavy preload (Class D) for maximum system rigidity.
- G: Specifies a Phenolic (resin) cage, beneficial for high-speed, low-friction operation.
- D: Confirms the bearing is Universal Matchable (SU) for precise arrangement in sets.
- /P4A: Identifies the super-precision tolerance class, exceeding standard ABEC 7/ISO P4 specifications for runout and dimensional accuracy.
7206 CDGD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The Heavy preload (Class D) eliminates internal clearance, providing exceptional stiffness to resist deflection under load, which is critical for maintaining machining accuracy.
- Superior Load Capacity: The optimized 15° contact angle and robust internal geometry enable the bearing to support substantial combined radial and axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage ensures stable operation at the high limiting speed of 71,500 rpm, reducing centrifugal forces and friction-induced heat.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional controls, this bearing guarantees minimal runout and vibration for superior application performance.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be mounted in tandem or back-to-back arrangements with other SU bearings to create a rigid, preloaded set without selective matching.
7206 CDGD/P4A Bearing Typical Application Areas
This bearing is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
