71920 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71920 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 71920 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing supplied in pre-lubricated pairs, it delivers superior performance in handling combined radial and axial loads. Its P4A tolerance class and extra light preload (Class A) ensure minimal runout and smooth operation, making it ideal for high-precision spindles and machinery. The phenolic cage contributes to its high-speed capability, while the chrome steel construction provides durability and long service life.
71920 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71920 | Basic bearing series and size designation |
| AC | Angular Contact design with 25° contact angle |
| D | Two bearings in universal matchable (SU) arrangement |
| P4A | High precision tolerance class with specific running accuracy |
| DGA | Universal match pairing designation for pre-mounted sets |
71920 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and minimal vibration.
Optimized Load Capacity: The 25° contact angle and robust design provide excellent combined load capacity, with dynamic load rating of 20,768 lbf and static load rating of 28,125 lbf.
High-Speed Performance: The phenolic cage material enables superior high-speed operation with a limiting speed of 15,000 rpm, reducing friction and heat generation.
Universal Matching Capability: As universal matchable (SU) bearings supplied in pre-lubricated pairs, they simplify installation and ensure optimal preload conditions for maximum stiffness and accuracy.
Wide Temperature Range: Suitable for operating temperatures from -30°C to 110°C, maintaining performance across various environmental conditions.
71920 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and high-RPM drive systems
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision actuators
- Robotics - Precision joints and articulated arms
