7020 ACD/P4ATBTG207GMM
7000 Series Super Precision Angular Contact Ball Bearings
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7020 ACD/P4ATBTG207GMM Bearing Product Overview & Core Advantages
The 7020 ACD/P4ATBTG207GMM is a precision angular contact ball bearing configured in a triplex back-to-back (TBT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this preloaded assembly is designed to handle combined loads (radial and axial) simultaneously. Manufactured to P4A tolerance class, it offers superior running accuracy and is pre-lubricated with grease for immediate operation, making it ideal for high-precision, high-reliability machinery.
7020 ACD/P4ATBTG207GMM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing designation (100mm bore, 150mm OD) |
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High precision tolerance class for superior running accuracy |
| TBT | Triplex Back-to-Back matched arrangement of 3 bearings |
| G207 | Specifies the preload level applied to the matched set |
| GMM | Indicates grease lubrication and open (non-contact) seal type |
7020 ACD/P4ATBTG207GMM Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The triplex back-to-back (TBT) configuration creates an extremely rigid bearing system, capable of supporting high combined loads and moments. The 25° contact angle is optimized for substantial axial load carrying capacity in both directions.
Precision Performance: Manufactured to P4A tolerance class with a phenolic cage, this bearing ensures smooth operation, low vibration, and minimal noise at high speeds, with a limiting speed of 16,000 rpm.
Optimized for High-Speed Operation: The lightweight phenolic cage reduces centrifugal forces, contributing to excellent high-speed performance. The open design and grease lubrication facilitate efficient heat dissipation.
Preloaded and Ready-to-Install: The set is supplied with a defined preload (G207), eliminating the need for complex adjustment during installation and ensuring immediate, precise performance.
7020 ACD/P4ATBTG207GMM Bearing Typical Application Areas
This high-precision, preloaded bearing set is ideally suited for applications requiring maximum rigidity and accuracy, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-frequency Precision Spindles
- Industrial Pumps and Compressors
- Robotic and Automation Drives
- Advanced Medical and Laboratory Equipment
