7020 ACE/P4ADBAGMM2
7000 Series Super Precision Angular Contact Ball Bearings
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7020 ACE/P4ADBAGMM2 Bearing Product Overview & Core Advantages
The 7020 ACE/P4ADBAGMM2 is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered for applications demanding exceptional rotational accuracy and rigidity, this matched pair is preloaded to Extra Light (Class A) specifications. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stability, making it an ideal choice for high-precision, high-rigidity spindles and other critical machinery components.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing designation (100mm bore, 150mm OD) |
| ACE | 25° contact angle design |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Duplex Back-to-Back mounting arrangement |
| AGMM2 | Specific internal clearance and preload designation for matched set |
7020 ACE/P4ADBAGMM2 Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing moment stiffness and operational stability under combined loads.
Superior Load Capacity: With a 25° contact angle and robust construction, this bearing is optimized to carry substantial axial loads in both directions, as well as radial loads.
Precision & High-Speed Capability: The P4A tolerance class ensures minimal runout and vibration. The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 20,000 rpm, suitable for high-speed applications.
Optimized for Performance: The set is supplied pre-greased and comes as a matched set of 2 bearings, ensuring consistent preload and performance right out of the box, simplifying installation and guaranteeing specified performance.
7020 ACE/P4ADBAGMM2 Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for demanding applications where accuracy, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Precision Spindles
- Robotic Arm Rotary Joints
- High-Performance Pumps and Compressors
- Aerospace and Defense Positioning Systems
