729 CDGA/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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729 CDGA/P4A Bearing Product Overview & Core Advantages
The 729 CDGA/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 15° contact angle is optimized for handling combined loads, particularly thrust loads in one direction, while maintaining high-speed capability up to 95,000 rpm. The phenolic resin cage and factory-applied lubrication ensure reliable performance across a wide temperature range from -30°C to 110°C.
729 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 729 | Basic bearing series designation | Standardized dimension series for interchangeability |
| CDGA | Contact angle 15°, phenolic cage, universal matching | Optimized for combined loads and high-speed operation |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
729 CDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: The P4A tolerance class ensures minimal dimensional variation, providing consistent performance in demanding applications. Bore and outside diameter tolerances of -0.004mm to 0 guarantee precise fitment.
Optimized Contact Angle: The 15° contact angle configuration enables efficient handling of combined radial and axial loads, making it ideal for applications requiring precise axial positioning.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at limiting speeds of 95,000 rpm, reducing centrifugal forces and maintaining stability.
Universal Matching Design: As a universal matchable bearing, the 729 CDGA/P4A can be paired in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for preload and stiffness.
Superior Load Capacity: With a dynamic load rating of 922 lbf and static load rating of 374 lbf, this bearing delivers reliable performance under demanding operating conditions.
729 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- Precision Instrumentation: Measuring equipment and optical devices demanding minimal vibration and high positional accuracy
- High-Speed Motors: Servo motors and spindle drives where high rotational speeds and precision are critical
- Medical Equipment: Dental handpieces and surgical tools requiring reliable, high-speed operation
- Aerospace Components: Guidance systems and auxiliary equipment where precision and reliability are paramount
