7201 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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7201 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7201 CD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring high rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement of two bearings is preloaded (Moderate / Class C), delivering exceptional stiffness and stability under combined loads (radial and axial). Manufactured to a P4A tolerance class, it ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery where reliability and performance are critical.
7201 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7201: Basic designation indicating a light series, 12mm bore angular contact bearing.
- C: Denotes a 15° contact angle, optimized for handling high axial loads.
- D: Signifies a duplex pair of bearings.
- P4A: Indicates a very high precision tolerance class, exceeding ABEC-7 standards.
- DB: Specifies the Back-to-Back arrangement, which provides high moment rigidity.
- C: Indicates a Moderate preload (Class C) for optimal stiffness and speed performance.
7201 CD/P4ADBC Bearing Structural Features & Performance Benefits
The performance of the 7201 CD/P4ADBC is driven by its specific construction. The duplex back-to-back configuration creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads. The 15° contact angle is engineered to efficiently support substantial axial loads in combination with radial loads. The phenolic resin cage contributes to smooth operation at high speeds and is suitable for the specified limiting speed. The P4A precision and strict dimensional tolerances ensure low vibration and minimal runout, which is critical for high-speed applications. The bearings are pre-lubricated for immediate use.
7201 CD/P4ADBC Bearing Typical Application Areas
This high-precision, preloaded bearing set is typically employed in:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Robotic Arm Joints and Drives
