7200 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7200 ACD/P4A Bearing Product Overview & Core Advantages
The 7200 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate combined loads, it efficiently handles significant axial loads in one direction alongside radial loads. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery. The bearing comes preloaded and lubricated from the factory, enabling immediate installation and reliable performance.
7200 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7200 | Basic Bearing Series & Size | Denotes a metric, light series angular contact bearing with a 10mm bore. |
| AC | Angular Contact Design | Optimized geometry with a 25° contact angle for high axial load capacity. |
| D | High Contact Angle | Specifically indicates a steeper contact angle, enhancing axial rigidity. |
| P4 | Tolerance Class | Corresponds to ABEC-7, signifying ultra-precision manufacturing for minimal runout and vibration. |
| A | Preload Level | Specifies a light preload, which increases bearing stiffness and minimizes axial/radial play. |
7200 ACD/P4A Bearing Structural Features & Performance Benefits
The performance of the 7200 ACD/P4A is a direct result of its precision construction:
- High Rigidity & Axial Load Capacity: The 25° contact angle and light preload work in tandem to provide exceptional system stiffness, crucial for applications requiring minimal deflection under load.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's limiting speed of 80,000 rpm.
- Precision & Accuracy: Manufactured to P4 tolerance with a bore diameter tolerance of -0.004mm to 0, this bearing guarantees smooth, quiet operation with high rotational accuracy.
- Robust Construction: Components made from chrome steel provide high hardness and durability, ensuring a long service life under demanding conditions.
7200 ACD/P4A Bearing Typical Application Areas
The 7200 ACD/P4A is specified for high-performance machinery where precision and speed are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Systems: Encoders, high-frequency motors, and laboratory equipment.
- Robotics: High-accuracy joints and servo motors.
- Medical & Dental Equipment: High-speed handpieces and diagnostic scanners.
