7202 CD/P4ADBB
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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7202 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7202 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair is preloaded to Light / Class B specifications, ensuring high system stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with superior performance, making it ideal for high-speed, high-precision machinery where positional accuracy is critical.
7202 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- 7202: Basic bearing series, indicating a 15mm bore and 35mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation and axial load capacity.
- D: Indicates the bearing is part of a duplex set (two bearings).
- P4A: Specifies a super-precision tolerance class (equivalent to ABEC 7), ensuring extremely tight dimensional and running accuracy.
- DB: Defines the matched arrangement as Back-to-Back, which provides high moment rigidity and is effective for withstanding overturning moments.
- B: Indicates the specific preload level (Light / Class B).
7202 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The back-to-back duplex arrangement creates a wide effective spread, significantly increasing the bearing system's resistance to moment loads and enhancing operational stability.
Precision Performance: Manufactured to P4A super-precision tolerances, this bearing guarantees minimal runout and vibration, which is crucial for applications demanding extreme accuracy.
Optimized for Combined Loads: The 15° contact angle provides an excellent balance between radial and axial load carrying capacity.
High-Speed Capability: The lightweight phenolic resin cage ensures smooth operation and reduced centrifugal forces, contributing to the high limiting speed of 95,000 rpm.
Superior Material: Constructed from chrome steel for both rings and balls, offering high fatigue resistance and durability under demanding conditions.
7202 CD/P4ADBB Bearing Typical Application Areas
The 7202 CD/P4ADBB is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Robotic Arm Joints and Precision Gearboxes
- Medical and Dental Equipment Spindles
- Aerospace Instrumentation
