7007 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7007 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7007 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This P4A tolerance class bearing features a back-to-back (DB) matched arrangement and an extra light preload (Class A), making it ideal for high-speed spindles and other precision machinery. Its duplex design enables it to withstand combined radial and axial loads simultaneously, providing stable and reliable performance in demanding operational conditions.
7007 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex Back-to-Back (DB) arrangement |
| P4A | High precision tolerance class (exceeding ABEC 7) |
| DB | Matched set of 2 bearings in back-to-back configuration |
| A | Extra light preload for minimal friction and optimal high-speed performance |
7007 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and provides excellent operational stability. With a radial dynamic load rating of 5445 lbf and static load rating of 4050 lbf, this bearing delivers reliable performance under significant combined loads.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
High-Speed Capability: The phenolic cage and optimized internal geometry enable a limiting speed of 56,000 rpm, making it suitable for high-speed spindle applications.
Premium Materials: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability. The phenolic cage offers reduced weight and superior performance at high speeds.
7007 ACD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Spindles - CNC machining, PCB drilling, and precision grinding equipment
- Precision Instrumentation - Measuring devices and laboratory equipment
- Robotics - High-accuracy robotic arms and positioning systems
- Medical Equipment - Dental handpieces and surgical tool spindles
