7030 ACD/P4AQBTA
7000 Series Super Precision Angular Contact Ball Bearings
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7030 ACD/P4AQBTA Bearing Product Overview & Core Advantages
The 7030 ACD/P4AQBTA is a precision quadruplex matched angular contact ball bearing designed for demanding applications requiring exceptional rigidity and load capacity. This P4A tolerance class bearing is configured in a Tandem Back-to-Back (QBT) arrangement, making it ideally suited for supporting combined loads in high-precision machinery. Its extra light preload (Class A) ensures smooth, precise operation with minimal running torque, while the phenolic cage contributes to its high-speed capabilities. This bearing is pre-lubricated for immediate use and offers reliable performance within a wide temperature range.
7030 ACD/P4AQBTA Bearing Model Code Explained, Specifications & Naming Convention
- 7030: Basic bearing series, indicating a 150mm bore, 225mm OD, and 140mm width.
- A: Denotes a 25° contact angle, optimized for supporting high axial loads.
- CD: Signifies the bearing is supplied as a duplex set (in this case, part of a quadruplex set).
- P4A: Indicates an ultra-precision tolerance class with enhanced running accuracy.
- QBT: Defines the matched arrangement as Quadruplex Tandem Back-to-Back for maximum axial rigidity.
7030 ACD/P4AQBTA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex Tandem Back-to-Back (QBT) arrangement of four bearings creates an extremely rigid system capable of handling very high combined radial and axial loads. The 25° contact angle is specifically engineered for superior axial load support.
Precision & High-Speed Performance: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration. The lightweight phenolic cage allows for higher limiting speeds (11,000 rpm) by reducing centrifugal forces and enabling efficient lubrication.
Optimized for Matched Sets: As part of a factory-matched quadruplex set, these bearings are supplied with a controlled extra light preload (Class A), eliminating the need for complex on-site preload adjustment and ensuring immediate, optimal performance.
7030 ACD/P4AQBTA Bearing Typical Application Areas
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: In industrial robotics and automation systems.
- High-Frequency Spindles: For PCB drilling and precision engraving.
- Medical Equipment: In high-speed imaging scanners and dental handpieces.
