7002 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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7002 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 7002 ACDGB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its defining feature is the Universal Matchable (SU) designation, allowing two identical bearings to be universally matched in a back-to-back (DB) or face-to-face (DF) arrangement to support combined loads and moments. Manufactured to the exacting P4A tolerance class, this bearing delivers exceptional running accuracy. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it an ideal solution for high-rigidity, high-RPM applications.
7002 ACDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Standard bearing series designation, indicating a 15mm bore, 32mm OD, and 9mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Indicates a Universal Matchable (SU) bearing, supplied as part of a matched set of 2 bearings for duplex mounting. |
| HC | Refers to the use of Hybrid Ceramic balls, providing benefits for high-speed operation. |
| P4A | Denotes a high-precision tolerance class superior to ABEC-7, ensuring minimal runout and vibration. |
7002 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4A tolerance class and Universal Matchable design enable precise preloading when mounted in pairs, creating an exceptionally rigid bearing system capable of handling complex load conditions.
Superior High-Speed Performance: The hybrid ceramic balls are lighter and harder than steel, reducing centrifugal force and wear. Combined with the lightweight, self-lubricating phenolic cage, this configuration allows for a very high limiting speed of 95,000 rpm.
Optimized Load Capacity: The 25° contact angle is optimized to efficiently support significant axial loads in one direction, as well as combined radial and axial loads.
Pre-Lubricated for Immediate Use: The bearing comes pre-lubricated, ensuring optimal performance from the first rotation and simplifying the installation process.
7002 ACDGB/HCP4A Bearing Typical Application Areas
The 7002 ACDGB/HCP4A is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Dental and Medical Handpieces
- Aerospace Instrumentation
