7044 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7044 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7044 ACD/P4ADBA is a precision duplex back-to-back angular contact ball bearing designed for applications requiring exceptional rigidity and rotational accuracy. This P4A tolerance class bearing features an extra light preload (Class A) and is supplied as a matched set, ensuring optimal performance in high-precision machinery. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously while maintaining stability under high-speed operation, making it ideal for demanding industrial environments.
7044 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| DB | Duplex Back-to-Back arrangement for high moment rigidity |
7044 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid support system capable of withstanding combined loads and moment loads. With a radial dynamic load rating of 117,000 lbf and static load rating of 198,000 lbf, this bearing delivers exceptional load-carrying capacity.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures minimal runout and vibration for high-precision applications.
High-Speed Capability: The phenolic cage material and optimized internal design enable operation at limiting speeds up to 6,300 rpm, making it suitable for high-speed spindle applications.
Thermal Stability: The phenolic cage and chrome steel construction maintain dimensional stability across the operating temperature range of -30°C to 110°C.
7044 ACD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Gearboxes - Industrial transmission systems requiring high rigidity
- High-Speed Motors - Electric motors and generators operating at elevated speeds
- Aerospace Components - Flight control systems and auxiliary power units
- Medical Equipment - CT scanners and high-speed dental handpieces
- Robotics - Precision robotic arms and automation systems
