7000 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7000 CDGA/P4A Bearing Product Overview & Core Advantages
The 7000 CDGA/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. Engineered to primarily accommodate combined loads (radial and axial in one direction), this bearing features an extra light preload (Class A) and P4A super precision tolerance for superior running smoothness and minimal vibration. Its compact design with a 10mm bore makes it ideal for space-constrained, high-performance machinery.
7000 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7000 C | Basic series & 15° contact angle |
| DGA | Universal Matchable (SU) bearing designed for duplex pairs (Back-to-Back/DB, Face-to-Face/DF, Tandem/DT) |
| P4A | Super precision tolerance class exceeding ABEC 7, ensuring extreme dimensional and running accuracy |
7000 CDGA/P4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The phenolic resin cage offers low weight and excellent acceleration characteristics, contributing to the high limiting speed of 185,000 rpm. The 15° contact angle optimizes speed capability while maintaining good axial load capacity.
- Precision & Rigidity: Manufactured to P4A tolerance class with a pre-applied extra light preload (Class A), this bearing provides high rotational accuracy, minimal run-out, and increased system rigidity for precise positioning.
- Superior Load Capacity: The optimized internal geometry and use of high-grade chrome steel for rings and balls provide a dynamic load rating of 922 lbf, enabling reliable operation under demanding conditions.
- Universal Matching Design: The DGA suffix signifies that bearings are universally matchable. This allows for simple and precise arrangement in pairs (DB, DF, DT) to handle complex load combinations without selective mounting, reducing assembly time and cost.
7000 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation (Measuring devices, optical scanners)
- High-Speed Motors and Spindles
- Aerospace Actuation Systems
- Semiconductor Manufacturing Equipment