71920 ACD/P4ATGA
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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71920 ACD/P4ATGA Bearing Product Overview & Core Advantages
The 71920 ACD/P4ATGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with universal matching capability (SU), this bearing can be mounted in various configurations to handle combined radial and axial loads simultaneously. Its P4A tolerance class ensures superior running accuracy, while the extra light preload (Class A) provides optimal stiffness with minimal friction, making it ideal for high-speed operation up to 15,000 rpm. The phenolic cage and chrome steel construction deliver outstanding performance in precision machinery.
71920 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° contact angle, universal matchable design | Optimized for combined loads and flexible mounting arrangements |
| P4A | High precision tolerance class | Superior running accuracy and rotational precision |
| TGA | Phenolic cage material, lubricated | Enhanced high-speed performance and temperature stability |
71920 ACD/P4ATGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with 25° contact angle and double-row ball complement provides exceptional stiffness, enabling the bearing to handle significant combined radial and axial loads (27,900 lbf dynamic, 42,750 lbf static).
Precision Performance: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for high-precision applications.
High-Speed Capability: The phenolic cage and optimized ball configuration (26 balls of 12.7mm diameter) enable stable operation at limiting speeds of 15,000 rpm, making it suitable for high-speed spindle applications.
Universal Matching Flexibility: As a universal matchable (SU) bearing, it can be paired with identical bearings in various arrangements (back-to-back, face-to-face, or tandem) to create optimized bearing systems for specific load conditions.
71920 ACD/P4ATGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- Precision Instrumentation: Measuring equipment and laboratory instruments
- High-Speed Motors: Industrial motors and spindle drives
- Aerospace Components: Guidance systems and aircraft instrumentation
- Medical Equipment: Dental handpieces and surgical tools
- Robotics: Precision joints and articulated arms
