S7020 ACD/P4ATBTB
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7020 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The S7020 ACD/P4ATBTB is a super-precision angular contact ball bearing designed for the most demanding applications. This triplex matched set in a Back-to-Back (TBT) arrangement delivers exceptional system rigidity and rotational accuracy. Engineered to a P4A tolerance class, it is optimized to handle combined loads (high radial and thrust loads) simultaneously, making it an ideal choice for high-speed spindles and other precision machinery requiring maximum performance and reliability.
S7020 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Super-precision bearing series with 100mm bore, 150mm OD. |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class exceeding ABEC 7/ISO P4. |
| TBT | Signifies a Triplex Back-to-Back matched set of three bearings. |
| Sealed / Grease | Comes sealed and pre-lubricated with grease for long service life. |
S7020 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The triplex back-to-back configuration creates an extremely rigid bearing system, effectively resisting complex moment loads and providing stable shaft support. This setup significantly increases the radial and axial load ratings (38,700 lbf dynamic / 54,000 lbf static).
High-Speed Capability: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to a high limiting speed of 16,250 rpm.
Precision Engineering: Manufactured to P4A tolerance class with a light preload (Class B), this bearing set guarantees minimal runout and smooth, precise rotation essential for high-accuracy applications.
Ready-to-Install and Long-Lasting: As a factory-matched set that is sealed and pre-greased, it ensures optimal performance from the start, reduces installation complexity, and offers reliable operation within a temperature range of -30°C to 110°C.
S7020 ACD/P4ATBTB Bearing Typical Application Areas
The S7020 ACD/P4ATBTB is specifically engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables: Indexing and positioning systems.
- High-Frequency Motors and Spindles: Applications requiring extreme rotational accuracy.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other critical rotating assemblies.
