7004 CDGA/P4A
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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7004 CDGA/P4A Bearing Product Overview & Core Advantages
The 7004 CDGA/P4A is a single-row angular contact ball bearing engineered for ultra-high precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to ABEC 7/P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 15° contact angle is optimized for handling combined loads, particularly thrust loads in one direction, while maintaining high-speed capability up to 63,000 rpm. The phenolic cage and universal matching designation (Universal Matchable (SU)) enable it to be preloaded in sets of three for maximum system rigidity and precision in demanding applications.
7004 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series with 20mm bore, 42mm OD, 12mm width |
| CDGA | Universal Matchable bearing with specific preload and tolerance characteristics |
| P4A | ABEC 7/P4A tolerance class - superior dimensional and running accuracy |
7004 CDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy for precision applications.
Optimized Load Capacity: The 15° contact angle provides excellent thrust load capacity while maintaining substantial radial load capability (1960 lbf dynamic, 968 lbf static), making it ideal for combined load applications.
High-Speed Performance: The phenolic cage and optimized internal geometry enable limiting speeds of 63,000 rpm, suitable for high-speed spindle applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied in matched sets of three with controlled preload (Extra light / Class A) for optimal system rigidity and minimal runout.
Premium Material Selection: Chrome steel rings and balls combined with phenolic cage provide excellent durability, corrosion resistance, and stable performance across the temperature range of -30°C to 110°C.
7004 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and high-frequency applications
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Systems - Guidance systems and precision actuators
- Semiconductor Manufacturing - Wafer handling and positioning equipment
