7204 CD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7204 CD/P4ADT Bearing Product Overview & Core Advantages
The 7204 CD/P4ADT is a precision angular contact ball bearing supplied as a matched duplex tandem (DT) set. Engineered to P4A tolerance class, this bearing delivers exceptional rotational accuracy and dimensional stability. Its primary advantage lies in its optimized design for handling high axial loads in a single direction when mounted in a tandem arrangement, significantly increasing axial load capacity and system rigidity. The phenolic cage and precision-ground chrome steel components enable reliable performance in high-speed applications up to 100,500 rpm.
7204 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| 7204 | Basic series designation (Light series, 20mm bore, 47mm OD) |
| C | 15° contact angle |
| D | Duplex bearing designation |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DT | Tandem arrangement (two bearings matched for increased axial capacity in same direction) |
7204 CD/P4ADT Bearing Structural Features & Performance Benefits
Optimized Tandem Configuration: The duplex tandem arrangement allows two bearings to share axial loads in the same direction, dramatically increasing the system's axial load capacity without requiring additional axial space.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for high-precision applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at limiting speeds of 100,500 rpm, while the 15° contact angle balances axial and radial load capacity.
Superior Load Ratings: With a dynamic load rating of 4388 lbf and static load rating of 2610 lbf, this bearing set offers reliable performance under demanding conditions.
Thermal Stability: The phenolic cage and chrome steel construction maintain dimensional stability across the operating temperature range of -30°C to 110°C.
7204 CD/P4ADT Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring tandem arrangements for heavy axial loads
- High-Speed Machining Centers: Applications demanding both high rotational accuracy and exceptional axial stiffness
- Precision Grinding Spindles: Where minimal runout and vibration are critical for surface finish quality
- Industrial Pumps & Compressors: High-speed rotary equipment requiring precise bearing alignment and load capacity
- Aerospace Actuation Systems: Critical applications needing reliable performance in tandem configurations
