7007 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7007 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7007 ACD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. This duplex back-to-back (DB) arrangement bearing set is preloaded to Moderate / Class C, providing superior stiffness and minimizing axial and radial deflection under complex combined loads. Manufactured to a P4A tolerance class, it ensures high-precision performance in machine tools and other high-speed equipment. Its compact design, with a 35 mm bore and 62 mm outside diameter, offers an optimal solution for high-rigidity, high-speed spindle applications.
7007 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series with 35 mm bore diameter and 62 mm outside diameter |
| AC | Angular Contact design with 25° contact angle |
| D | Duplex Back-to-Back (DB) mounting arrangement |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DBC | Duplex Back-to-Back arrangement with Moderate (Class C) preload |
7007 ACD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains precise shaft positioning. Combined with P4A tolerance class manufacturing, this ensures exceptional running accuracy and minimal vibration.
Optimized Load Capacity: With a 25° contact angle and duplex arrangement, this bearing set delivers superior performance under combined radial and axial loads. The radial dynamic load rating of 5445 lbf and static load rating of 4050 lbf provide reliable operation in demanding conditions.
High-Speed Capability: The phenolic cage material and optimized internal geometry enable excellent high-speed performance, with a limiting speed of 56,000 rpm. This makes it ideal for high-speed spindle applications where thermal stability and minimal friction are critical.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, this bearing offers excellent wear resistance and long service life. The phenolic cage provides good dimensional stability at high speeds while reducing weight.
7007 ACD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling machine spindles
- High-Speed Motors: Precision motor spindles requiring high rigidity and minimal runout
- Industrial Pumps: High-performance centrifugal pumps and compressor systems
- Precision Instrumentation: Medical equipment, measuring devices, and optical systems
- Robotics & Automation: High-accuracy robotic joints and precision positioning systems
