7002 CD/P4ADBG3
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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7002 CD/P4ADBG3 Bearing Product Overview & Core Advantages
The 7002 CD/P4ADBG3 is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set is preloaded and manufactured to P4A tolerance class, ensuring superior running precision and dimensional stability. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stiffness, making it ideal for high-speed, high-precision spindles and machinery.
7002 CD/P4ADBG3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series, indicating a 15mm bore, 32mm OD, and 18mm width. |
| C | 15° contact angle, optimized for supporting combined loads. |
| D | Indicates a duplex back-to-back (DB) arrangement. |
| P4A | High-precision tolerance class exceeding ABEC 7, ensuring minimal runout and vibration. |
| DB | Confirms the back-to-back mounting of the two bearings in the set. |
| G3 | Specifies the preload level applied to the matched set for optimal rigidity. |
7002 CD/P4ADBG3 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a wide, rigid support system that effectively resists moment loads and provides exceptional operational stability. This configuration significantly enhances the bearing's capacity to handle combined radial and axial loads.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures smooth operation, low vibration, and low heat generation at high rotational speeds, with a limiting speed of 100,000 rpm.
Optimized Material & Design: Constructed from chrome steel for both rings and balls, the bearing offers high durability and wear resistance. The open design allows for customized lubrication schemes to suit specific application requirements.
Preloaded for Immediate Use: The set is supplied with a preload (G3), eliminating the need for complex adjustment during installation and ensuring immediate high-performance operation with optimal stiffness.
7002 CD/P4ADBG3 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme accuracy and surface finish.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM applications.
- Medical Equipment: High-speed dental handpieces and surgical tools.
- Test & Measurement Equipment: Precision rotary stages and instrumentation.
