7204 CD/P4ADBB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7204 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7204 CD/P4ADBB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set is preloaded to Light / Class B specifications, ensuring optimal performance under combined loads. Its primary advantages include superior high-speed capability with a limiting speed of 100,500 rpm, excellent high rigidity due to its matched arrangement, and the ability to handle significant combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it is ideal for high-precision, high-reliability machinery.
7204 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7204 | Basic bearing series and size designation (20mm bore, 47mm OD, 28mm width). |
| C | 15° contact angle, optimized for carrying combined loads. |
| D | Duplex bearing set. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards for running accuracy. |
| DB | Back-to-Back mounting arrangement, providing high moment rigidity. |
| B | Light preload classification, minimizing deflection and vibration at high speeds. |
7204 CD/P4ADBB Bearing Structural Features & Performance Benefits
Matched Duplex Design: The back-to-back (DB) arrangement of two bearings creates a wide effective spread, significantly increasing the system's moment stiffness and stability, making it exceptionally resistant to overturning moments.
High-Speed Performance: The phenolic resin cage offers low weight and excellent sliding properties, contributing to the bearing's high limiting speed of 100,500 rpm. The 15° contact angle provides a balanced capability for both radial and axial loads at high rotational velocities.
Superior Load Capacity: Engineered to handle combined loads effectively. With a dynamic load rating of 4388 lbf and a static load rating of 2610 lbf, this bearing provides reliable performance in demanding applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width. This ensures minimal runout and superior rotational accuracy for precise spindle applications.
7204 CD/P4ADBB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Drives: High-frequency motor spindles and servo drives.
- Industrial Pumps & Compressors: Applications where high-speed operation and reliable axial load capacity are critical.
- Robotics: High-accuracy joints and rotary actuators.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
