7011 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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7011 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7011 ACD/P4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back (TBT) matched set provides superior stability and load-handling capabilities. Engineered to a P4A tolerance class, it delivers extremely tight dimensional control for high-speed, high-rigidity applications. Its primary advantage lies in its ability to support combined loads (radial and axial) simultaneously with maximum stiffness, making it ideal for precision spindles and other critical machinery components.
7011 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Contact Angle of 25° |
| P4A | High Precision Tolerance Class (equivalent to ABEC 7) |
| TB | Back-to-Back Mounting Arrangement |
| TA | Matched Bearing Set (Triplex) |
7011 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The triplex back-to-back configuration creates an extremely rigid bearing system that minimizes deflection under load, crucial for maintaining precision in machining operations.
Superior Load Capacity: With a 25° contact angle and three-bearing arrangement, this set provides excellent capacity for both radial and axial loads, handling combined loads effectively in demanding applications.
High-Speed Capability: The phenolic cage material offers excellent strength-to-weight ratio and smooth operation at high speeds, supporting the limiting speed of 34,000 rpm.
Precision Performance: Manufactured to P4A tolerance class with precise bearing dimensions (55mm bore, 90mm OD), this bearing ensures minimal runout and vibration for superior rotational accuracy.
7011 ACD/P4ATBTA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring equipment and laboratory instruments requiring extreme accuracy
- High-Speed Motors - Spindle motors and other high-RPM electric motors
- Aerospace Components - Guidance systems and aircraft instrumentation
- Medical Equipment - Dental handpieces and surgical tool spindles
