7034 CD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7034 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7034 CD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universally matchable (SU) bearing supplied in a pre-set duplex pair, it is engineered to accommodate combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The moderate preload (Class C) enhances system stiffness and minimizes axial and radial runout, contributing to superior performance.
7034 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
- 7034: Basic bearing series, indicating a 170mm bore, 260mm OD, and 84mm width.
- C: Denotes a 15° contact angle, optimized for high-speed applications with significant axial loads.
- D: Indicates the bearing is part of a duplex pair (two bearings).
- P4A: Specifies an ultra-precision tolerance class exceeding ABEC 7/ISO P4, with enhanced running accuracy requirements.
- D (in P4ADGC): Further defines the duplex pairing specification.
- GC: Indicates a specific preload level – in this case, Moderate / Class C.
7034 CD/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex pair arrangement and 15° contact angle create a highly rigid bearing system capable of supporting substantial combined radial and axial loads (Dynamic Load Rating: 77,625 lbf, Static Load Rating: 110,250 lbf). This configuration is essential for applications where shaft deflection must be minimized.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and precision grinding to P4A standards contribute to a high limiting speed of 11,000 rpm. This makes the bearing suitable for high-speed spindles.
Precision & Stability: Manufactured from chrome steel for both rings and balls, and held to ultra-tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures minimal vibration and consistent performance under high rotational speeds.
Universal Matchability: As a Universal Matchable (SU) bearing, any two bearings from this series can be paired in a duplex arrangement (face-to-face, back-to-back, or tandem) without selective matching, simplifying installation and inventory.
7034 CD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
