7011 ACD/P4ATBTD
7000 Series Super Precision Angular Contact Ball Bearings
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7011 ACD/P4ATBTD Bearing Product Overview & Core Advantages
The 7011 ACD/P4ATBTD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and load capacity. This triplex back-to-back (TBT) matched set delivers superior performance under combined loads, making it ideal for high-precision, high-stiffness machinery. Manufactured to P4A tolerance class and featuring a heavy preload (Class D), it ensures minimal deflection and outstanding rotational accuracy. Its open design with phenolic cage enables high-speed operation up to 34,000 rpm.
7011 ACD/P4ATBTD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with 25° contact angle |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| TBT | Triplex Back-to-Back arrangement of three matched bearings |
7011 ACD/P4ATBTD Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The triplex back-to-back configuration creates an extremely rigid bearing system that effectively resists moment loads and shaft deflection, crucial for maintaining precision under heavy cutting forces.
Superior Load Capacity: With a 25° contact angle and three-bearing arrangement, this set provides outstanding capacity for combined radial and axial loads in both directions, ensuring reliable operation in demanding conditions.
High-Speed Capability: The phenolic cage material offers excellent strength-to-weight ratio and smooth operation at high speeds, while the optimized internal geometry contributes to the impressive 34,000 rpm limiting speed.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0), this bearing set delivers consistent, high-precision rotation essential for precision machining applications.
7011 ACD/P4ATBTD Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision boring machines
- Industrial Pumps: High-pressure centrifugal pumps and chemical process pumps
- Precision Gearboxes: High-torque transmission systems requiring minimal deflection
- Aerospace Systems: Actuators and control mechanisms demanding high reliability
- Robotics: Joint and articulation points in industrial robots
