7040 CD/P4ADGA
7000 Series 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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7040 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7040 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing is optimized for high-speed operation and can accommodate combined radial and axial loads. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement, providing superior system stability. The combination of a phenolic cage and high-grade chrome steel components ensures reliable performance in demanding environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7040 CD | Basic bearing designation with specific internal design |
| P4A | High precision tolerance class for exceptional running accuracy |
| DGA | Contact angle designation (15°) and universal matching capability |
7040 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4A tolerance class ensures minimal runout and vibration, while the angular contact design with 15° contact angle provides excellent rigidity against combined loads.
Optimized Speed Performance: The phenolic cage offers superior strength-to-weight ratio, contributing to higher limiting speeds (16,250 rpm) with reduced centrifugal forces.
Superior Load Capacity: With a dynamic load rating of 109,800 lbf and static load rating of 172,125 lbf, this bearing handles significant radial and axial loads simultaneously.
Universal Matching Capability: The SU designation enables precise bearing arrangements without selective matching, simplifying installation and ensuring optimal preload conditions.
Material Excellence: Manufactured from chrome steel for rings and balls, providing high wear resistance and durability across the operating temperature range of -30°C to 110°C.
7040 CD/P4ADGA Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and precision grinding machines
- Industrial pumps and compressors operating at elevated speeds
- Precision instrumentation and measuring equipment
- Aerospace positioning systems demanding exceptional accuracy
- Robotic arm joints and precision automation equipment
