71920 ACDGA/P4AL
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71920 ACDGA/P4AL Bearing Product Overview & Core Advantages
The 71920 ACDGA/P4AL is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This single bearing features a 25° contact angle and Extra Light (Class A) preload, making it ideal for managing combined radial and axial loads. Manufactured to P4A tolerance class, it offers superior running accuracy and is Universal Matchable (SU), allowing for precise duplex arrangements. Its compact design and high-performance materials ensure optimal performance in demanding, high-speed environments.
71920 ACDGA/P4AL Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Double-row design for high rigidity and increased load capacity. |
| GA | Universal Matchable (SU) bearing, supplied with specific preload for precise paired mounting. |
| P4A | High Precision Tolerance Class, providing extremely tight dimensional and running accuracy. |
| L | Light preload designation (Extra Light / Class A). |
71920 ACDGA/P4AL Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact design provides superior stiffness, enabling the bearing to effectively support combined loads (radial and axial) from both directions. This makes it exceptionally stable under complex loading conditions.
Precision & Speed Performance: Built to P4A tolerance standards and featuring a lightweight phenolic resin cage, the bearing achieves smooth operation and low vibration at high rotational speeds (up to 15,000 rpm). The optimized internal geometry with 26 precision balls ensures consistent performance.
Material & Durability: Manufactured from high-grade chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life. The open design allows for custom lubrication schemes to suit specific application needs.
71920 ACDGA/P4AL Bearing Typical Application Areas
The 71920 ACDGA/P4AL is engineered for high-performance machinery where precision and reliability are paramount. Key applications include:
- Machine Tool Spindles
- High-Speed Precision Spindles
- Robotic Drives and Actuators
- Medical and Dental Equipment
- Aerospace Control Systems
