7004 ACD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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7004 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7004 ACD/P4ADGA is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Manufactured to P4A tolerance class, this bearing is characterized by its 25° contact angle and extra light preload (Class A), making it ideally suited for high-speed operation and precise positioning systems. Its universal matchable (SU) design allows for flexible mounting in various arrangements to handle combined radial and axial loads simultaneously, providing a compact and highly reliable solution for the most demanding industrial environments.
7004 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACD | Angular Contact, 25° Contact Angle | Optimized for handling significant axial loads in one direction along with radial loads. |
| P4A | High Precision Tolerance Class | Provides extremely tight dimensional and running accuracy for superior performance in precision applications. |
| DGA | Universal Matchable (SU) designation | Enables bearings to be mounted in tandem, back-to-back, or face-to-face arrangements without pre-set internal clearance. |
7004 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The bearing's construction with a phenolic cage and chrome steel components, combined with the P4A tolerance class, ensures minimal deflection and vibration, providing the high rigidity required for precise machining and positioning.
Superior Load Capacity: The 25° contact angle is engineered to efficiently support substantial combined loads, making it capable of handling complex force scenarios in demanding applications.
Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 103,000 rpm. The open design allows for efficient lubrication management, further enhancing its high-speed capabilities.
Pre-Lubricated & Ready for Service: The bearing is supplied lubricated, ensuring immediate readiness for installation and initial operation within its specified temperature range of -30°C to 110°C.
7004 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Robotics: In arm joints and rotary actuators where accuracy and responsiveness are critical.
- High-Frequency Spindles: Used in PCB drilling, dental tools, and small-part machining.
- Optical and Measurement Equipment: In rotary stages and encoders that demand minimal runout and high rotational accuracy.
