7034 ACDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7034 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7034 ACDGB/P4A is a high-precision single row angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to accommodate primarily axial loads in one direction as well as combined loads, its defining characteristics include a 25° contact angle and a P4A super-precision tolerance class. This bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets (typically in a group of 3) to achieve optimal system stiffness and performance. Its construction with a phenolic cage and chrome steel components makes it an ideal choice for high-speed operation and high-reliability scenarios.
7034 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7034 | Basic bearing designation indicating a metric series angular contact ball bearing with a 170 mm bore, 260 mm OD, and 42 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Universal Matchable (SU) bearing. "D" typically refers to a specific contact angle and "GB" indicates a specific internal clearance and preload (Light / Class B in this case) for universal pairing. |
| P4A | Super Precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring extremely tight running accuracy for the inner and outer rings. |
7034 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized 25° contact angle and robust construction enable the bearing to handle significant axial loads in one direction and combined loads effectively. The Light preload (Class B) in a matched set arrangement eliminates internal clearance, resulting in superior system stiffness and precise shaft positioning.
- High-Speed Performance: The lightweight and durable phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 11,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications demanding the highest levels of accuracy and smooth operation.
- Universal Matching Capability (SU): This feature allows for simplified mounting of multiple bearings in various configurations (e.g., back-to-back, face-to-face) to create a preloaded system, enhancing overall application performance and bearing service life.
7034 ACDGB/P4A Bearing Typical Application Areas
The 7034 ACDGB/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Where extreme rotational accuracy is required.
- High-Frequency Motors and Spindles: Demanding low vibration and high-speed capability.
- Aerospace and Defense Systems: Including gyroscopes and radar equipment.
- Medical Equipment: Such as high-speed dental handpieces and imaging devices.
