7207 CD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7207 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The 7207 CD/HCP4ADBA is a high-precision duplex back-to-back angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set bearing features a ceramic ball construction and is manufactured to P4A super-precision tolerance standards. Its primary advantage lies in its ability to provide high rigidity and stable performance under combined radial and axial loads, making it an ideal solution for high-speed, high-precision spindles and machinery.
7207 CD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 7207: Basic bearing series with 35mm bore, 72mm OD, 34mm width
- C: 15° contact angle
- D: Duplex arrangement
- DB: Back-to-Back mounting configuration
- HC: Hybrid Ceramic (steel rings with ceramic balls)
- P4A: Super precision tolerance class
- A: Extra light preload
7207 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperatures, and extends service life, particularly in high-speed applications.
Duplex Back-to-Back Configuration: This arrangement provides high rigidity and can withstand combined loads from multiple directions, making it suitable for applications requiring precise shaft positioning.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0) ensures minimal runout and vibration for superior rotational accuracy.
Phenolic Cage: The reinforced phenolic resin cage offers excellent performance at high speeds (limiting speed: 41,000 rpm) with reduced friction and weight.
7207 CD/HCP4ADBA Bearing Typical Application Areas
This precision angular contact bearing is specifically engineered for demanding applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Medical Equipment: Dental handpieces, surgical tools
- Aerospace Components: Gyroscopes, navigation systems
- High-Speed Motors: CNC spindle motors, high-frequency applications
- Semiconductor Manufacturing Equipment: Wafer handling, precision positioning systems
