7034 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7034 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7034 ACDGA/P4A is a high-precision single row angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate high combined loads, efficiently handling both radial and significant axial loads in one direction. The bearing features a 25° contact angle and an Extra Light (Class A) preload, making it ideal for high-speed spindles and other precision machinery where minimal deflection and high operational stability are critical.
7034 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 7034 | Basic Bearing Number | Defines the standard metric dimensions: 170mm bore, 260mm OD, 42mm width. |
| A | Contact Angle | Specifies a 25° contact angle, optimized for high axial load capacity. |
| CD | Universal Matchable (High Precision) | Indicates the bearing is Universal Matchable (SU) and can be mounted in tandem, back-to-back, or face-to-face arrangements with other CD-designated bearings to achieve specific preload and stiffness without selective mounting. |
| GA | Preload Class | Denotes an Extra Light preload (Class A), minimizing friction and heat generation for superior high-speed performance. |
| P4A | Tolerance Class | Specifies a high-precision tolerance class superior to ABEC 7, ensuring extremely tight dimensional and running accuracy for the most demanding applications. |
7034 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with a phenolic resin cage, this bearing ensures exceptional dimensional stability and running accuracy, which is critical for minimizing vibration and maintaining positioning precision.
- Superior Load Capacity: The 25° contact angle and robust construction using chrome steel for rings and balls provide excellent capacity for combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic cage and Extra Light preload (GA) work in concert to reduce centrifugal forces and friction, enabling a high limiting speed of 11,000 rpm.
- Universal Matching Capability: The CD designation allows for simplified assembly of matched bearing sets. Bearings can be universally paired in various configurations (e.g., DB, DF) to achieve desired system stiffness and preload without the need for selective grinding or complex calculations.
7034 ACDGA/P4A Bearing Typical Application Areas
The 7034 ACDGA/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are non-negotiable. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables: Indexing and positioning systems.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and high rotational accuracy.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other precision instruments.
