708 ACDGA/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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708 ACDGA/P4A Bearing Product Overview & Core Advantages
The 708 ACDGA/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance under combined loads. Manufactured to P4A tolerance class, this bearing delivers exceptional dimensional accuracy and running precision. Its 25° contact angle enables it to efficiently handle significant axial loads in one direction while supporting radial loads. The phenolic cage and universal matching capability (Universal Matchable/SU) allow for flexible mounting arrangements in high-speed applications, making it ideal for precision machinery where reliability and accuracy are paramount.
708 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 708 | Basic bearing series | Indicates the bearing size series and internal design |
| AC | Angular Contact | Designed to support combined radial and axial loads |
| DGA | Universal Matchable (SU designation) | Can be mounted in various arrangements (back-to-back, face-to-face, or tandem) |
| P4A | Tolerance Class | High precision grade with tight dimensional and running accuracy tolerances |
708 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class, this bearing ensures minimal dimensional variation and superior running accuracy, critical for precision applications.
Optimized Load Capacity: The 25° contact angle provides excellent axial load carrying capacity while maintaining substantial radial load capability, making it suitable for combined loading conditions.
High-Speed Performance: The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's impressive limiting speed of 110,000 rpm.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be paired with identical bearings in various configurations (back-to-back, face-to-face, or tandem) to create optimized bearing systems for specific load requirements.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring high hardness, wear resistance, and long service life under demanding conditions.
708 ACDGA/P4A Bearing Typical Application Areas
The 708 ACDGA/P4A finds extensive use in precision applications requiring high-speed operation and accurate positioning:
- Machine Tool Spindles - High-speed machining centers and precision grinding applications
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and servo motors requiring precise rotation
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision actuators
- Robotics - Joint mechanisms and precision positioning systems
