7005 ACD/P4ATGB
7000 Series Super Precision Angular Contact Ball Bearings
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7005 ACD/P4ATGB Bearing Product Overview & Core Advantages
The 7005 ACD/P4ATGB is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing, it can be mounted in various configurations (face-to-face, back-to-back, or tandem) with other identical bearings to achieve optimal stiffness and load-sharing characteristics. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery. The phenolic cage and optimized 25° contact angle contribute to its excellent high-speed performance and ability to handle combined loads (radial and axial) simultaneously.
7005 ACD/P4ATGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Standard bearing series designation with 25 mm bore, 47 mm OD, and 12 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Two bearings in a universal matchable (SU) set. |
| P4A | High precision tolerance class exceeding ABEC 7 standards for superior running accuracy. |
| TGB | Pre-lubricated with a specific high-performance grease suitable for the designated temperature range. |
7005 ACD/P4ATGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design and universal matchability allow for preloaded arrangements, significantly increasing system stiffness. This enables the bearing to effectively handle combined radial and axial loads.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and 25° contact angle contribute to a high limiting speed of 85,000 rpm, making it a true high-speed bearing.
Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
Optimized for Matched Sets: As a universal matchable (SU) bearing, it is supplied with selective matching to ensure consistent preload and performance when used in sets of two or more bearings.
7005 ACD/P4ATGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors: Spindles for PCB drilling and small precision motors.
- Robotics: High-accuracy joints and rotary actuators.
