7030 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7030 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7030 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement is preloaded to Moderate / Class C specifications, delivering superior system stiffness and rotational precision. Engineered to handle combined radial and axial loads simultaneously, its compact design and P4A tolerance class make it ideal for high-speed, high-reliability machinery where positional accuracy is critical.
7030 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7030 CD/P4ADBC provides detailed technical specifications:
- 7030: Basic bearing designation (150mm bore, 225mm OD, 70mm width)
- C: 15° contact angle, optimized for combined loads
- D: Indicates a duplex (two-bearing) set
- P4A: High-precision tolerance class exceeding ABEC 7 standards
- DB: Back-to-Back arrangement for high moment rigidity
- C: Moderate preload for optimal stiffness and speed performance
7030 CD/P4ADBC Bearing Structural Features & Performance Benefits
The 7030 CD/P4ADBC's construction delivers distinct performance advantages:
- High Rigidity: The back-to-back duplex arrangement creates a wide effective spread, significantly increasing system stiffness and resistance to moment loads.
- Superior Load Capacity: The 15° contact angle and robust construction enable it to handle substantial combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration.
- High-Speed Capability: The phenolic resin cage reduces weight and friction, contributing to the high limiting speed of 11,000 rpm.
- Durability: Components made from chrome steel provide excellent wear resistance and long service life under demanding conditions.
7030 CD/P4ADBC Bearing Typical Application Areas
This bearing is specified for high-performance applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Gearboxes and Industrial Pumps
- High-Frequency Motors and Compressors
- Robotic Arm Joints and Positioning Systems
- Aerospace Actuation Systems and Medical Imaging Equipment
