7020 ACD/P4ATBTG180
7000 Series Super Precision Angular Contact Ball Bearings
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7020 ACD/P4ATBTG180 Bearing Product Overview & Core Advantages
The 7020 ACD/P4ATBTG180 is a precision angular contact ball bearing supplied as a triplex matched set in a back-to-back (TBT) arrangement. Engineered for applications demanding exceptional rigidity and accuracy, this bearing is designed to support combined loads—handling significant radial loads and axial loads in one direction simultaneously. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-performance spindles and other precision machinery where high rigidity and minimal runout are critical.
7020 ACD/P4ATBTG180 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing designation indicating a 100 mm bore, 150 mm OD, and 72 mm width. |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class with very tight dimensional and running accuracy limits. |
| TBT | Specifies the bearing is part of a Triplex Back-to-Back matched set. |
| G180 | Indicates a specific preload level applied to the matched set for optimal stiffness and performance. |
7020 ACD/P4ATBTG180 Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The triplex back-to-back arrangement creates an extremely rigid bearing system, effectively resisting moment loads and providing stable support for spindles. This configuration significantly increases the system's ability to handle combined radial and axial loads.
Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is essential for high-speed, high-accuracy applications. The 25° contact angle is optimized for supporting substantial axial loads.
High-Speed Capability: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and enabling smooth operation at the specified limiting speed. The bearing is supplied lubricated for immediate use.
Durable Construction: Components made from chrome steel (rings and balls) ensure high fatigue life and durability under demanding operating conditions.
7020 ACD/P4ATBTG180 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and precision.
- Precision Grinding Spindles: Applications where exceptional running accuracy and minimal deflection are paramount.
- High-Frequency Machining Centers: For operations that demand high rotational speeds and superior dynamic stability.
- Other Precision Rotary Equipment: Including high-performance measuring instruments and specialized industrial machinery.
