7210 CD/P4ADFA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7210 CD/P4ADFA Bearing Product Overview & Core Advantages
The 7210 CD/P4ADFA is a duplex pair angular contact ball bearing specifically engineered for applications demanding ultra-high precision and superior rigidity. This pre-matched Face-to-Face (DF) set, manufactured to P4A tolerance class, is designed to accommodate combined radial and axial loads simultaneously. The extra light preload (Class A) ensures minimal friction and optimal running accuracy, making it ideal for high-speed spindles and other precision machinery where exceptional rotational stability is critical.
7210 CD/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
- 7210: Basic bearing designation (Bore: 50mm, OD: 90mm, Width: 20mm per bearing)
- C: 15° contact angle
- D: Indicates a duplex pair (two bearings supplied as a set)
- P4A: Super-precision tolerance class (exceeding ABEC 7)
- DF: Duplex Face-to-Face arrangement
- A: Extra light preload classification
7210 CD/P4ADFA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex DF arrangement creates a highly rigid bearing system capable of withstanding significant combined loads and moment loads. The 15° contact angle is optimized for handling substantial axial loads in both directions.
Precision Performance: Manufactured to P4A tolerance class with phenolic cage, this bearing ensures minimal vibration and exceptional running accuracy. The extra light preload eliminates internal clearance, providing superior rotational precision while maintaining low operating temperatures.
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable limiting speeds up to 46,000 rpm, making it suitable for demanding high-speed applications.
Material Excellence: Constructed from chrome steel for both rings and balls, ensuring high durability and long service life under demanding operating conditions.
7210 CD/P4ADFA Bearing Typical Application Areas
The 7210 CD/P4ADFA finds extensive use in precision applications requiring high speed and rigidity:
- Machine tool spindles (milling, grinding, and turning centers)
- High-frequency machining centers
- Precision grinding spindles
- Industrial high-speed motors
- Aerospace positioning systems
- Medical equipment spindles
- Test and measurement equipment
