7022 ACD/P4ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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7022 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7022 ACD/P4ATBTC is a metric system, triplex back-to-back (TBT) matched set of precision angular contact ball bearings. Engineered to the exacting P4A tolerance class, this arrangement is specifically designed to deliver exceptional system rigidity and handle combined loads—significant radial and thrust loads from both directions simultaneously. The moderate preload (Class C) ensures precise shaft positioning and optimal performance in high-precision, high-stability applications. Its open design, when properly lubricated, supports reliable operation within a broad temperature range.
7022 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7022 | Basic bearing designation (110mm Bore, 170mm OD, 84mm Width) | Defines the standard bearing dimensions. |
| ACD | Angular Contact, 25° Contact Angle, Double-Row Design | Optimized for high thrust capacity and rigidity. |
| P4A | High Precision Tolerance Class | Guarantees superior running accuracy, low noise, and minimal vibration. |
| TBT | Triplex Back-to-Back Matched Set | Three bearings are selectively matched and preloaded to function as a single, highly rigid unit, capable of withstanding complex moment loads. |
| C | Moderate Preload Class | Provides optimal balance between stiffness, speed capability, and operating temperature. |
7022 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The triplex back-to-back (TBT) configuration creates an extremely rigid bearing system. This design effectively resists overturning moments and supports heavy combined loads, making it ideal for applications demanding high positional accuracy.
Optimized for Precision and Speed: The 25° contact angle provides an excellent balance between radial and axial load capacity. The lightweight, high-strength phenolic cage ensures stable operation and contributes to the high limiting speed of 16,250 rpm, facilitating high-speed performance.
Superior Material and Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high fatigue life and durability. The tight P4A tolerance class and stringent dimensional tolerances on bore, outside diameter, and width guarantee precise fitment and consistent, reliable performance.
7022 ACD/P4ATBTC Bearing Typical Application Areas
The 7022 ACD/P4ATBTC is engineered for the most demanding high-precision machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinders, and milling machines requiring extreme rigidity and accuracy.
- High-Speed Precision Spindles: Used in PCB drilling, precision grinding, and other applications where high RPM and low runout are critical.
- Industrial Robotics: In robot arm joints and gears where high moment load capacity and positional precision are essential.
- Advanced Medical Equipment: For imaging devices and surgical tools that demand smooth, precise, and reliable rotational movement.
