7202 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7202 ACD/P4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This duplex back-to-back (DB) arrangement bearing set is preloaded to Extra Light (Class A) specifications, delivering superior running accuracy and high rigidity. Manufactured to P4A tolerance class, it excels in handling combined radial and axial loads simultaneously, making it ideal for high-speed spindles and precision machinery where minimal deflection and precise rotational performance are critical.
7202 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Duplex arrangement. Specifically, DB (Back-to-Back) for high moment rigidity. |
| P4A | Indicates a high precision tolerance class, exceeding ABEC 7 standards, for applications requiring extreme running accuracy. |
| DB | Back-to-Back mounting of the two bearings in the set. |
| A | Specifies the Extra Light preload level, minimizing friction and heat generation at high speeds. |
7202 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional positional accuracy.
Superior Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to handle significant combined radial and axial loads from both directions.
High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the extra light preload minimizes friction, collectively supporting a high limiting speed of 95,000 rpm.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing guarantees smooth, quiet, and vibration-free operation.
Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring long service life under demanding conditions.
7202 ACD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving machines, and semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and small precision motors.
- Medical Equipment: High-speed dental handpieces and laboratory instrumentation.
- Robotics: Precision joints and arms requiring high rigidity and accuracy.
