7007 ACD/P4ADBG49GMM
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACD/P4ADBG49GMM Bearing Product Overview & Core Advantages
The 7007 ACD/P4ADBG49GMM is a precision angular contact ball bearing configured in a duplex back-to-back (DB) arrangement. This matched set is designed to deliver exceptional performance in applications requiring high rigidity and the ability to withstand combined loads. The bearing features a P4A tolerance class for superior running accuracy, a 25° contact angle optimized for axial load capacity, and is preloaded for immediate, precise operation. Its compact design and high load ratings make it an ideal solution for high-speed, high-precision machinery.
7007 ACD/P4ADBG49GMM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series, indicating a 35mm bore, 62mm OD, and 28mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (two bearings in a set). |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4, ensuring minimal runout and vibration. |
| DB | Back-to-Back mounting arrangement, providing high moment rigidity. |
| G49GMM | Internal clearance and preload designation, indicating a specific preload level for optimal stiffness. |
7007 ACD/P4ADBG49GMM Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and complex combined loads (radial and axial). This configuration significantly enhances system stability.
Precision & High-Speed Performance: Manufactured to a P4A tolerance class, this bearing ensures exceptional running accuracy. The phenolic resin cage is lightweight and robust, contributing to smooth operation and a high limiting speed of 56,000 rpm. The standard grease lubrication is suitable for this operational range.
Durability & Material Quality: Components are made from high-grade chrome steel, offering excellent wear resistance and fatigue life. The open seal type allows for customized sealing solutions based on application needs.
7007 ACD/P4ADBG49GMM Bearing Typical Application Areas
The 7007 ACD/P4ADBG49GMM is engineered for high-performance applications where precision and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Speed Robotic Drives and Precision Gearboxes
- Medical Equipment (High-speed dental handpieces, centrifuges)
- Aerospace Actuation Systems and Instrumentation
- Precision Test and Measurement Equipment
