71902 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71902 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 71902 ACD/P4ADGA is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This universal matchable (SU) bearing features an Extra Light (A) preload and P4A tolerance class, making it ideal for high-speed spindles and precision machinery. Its 25° contact angle enables it to handle combined loads efficiently, supporting significant radial and axial loads simultaneously. The open design with phenolic cage facilitates high-speed operation while maintaining dimensional stability.
71902 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with 25° contact angle |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGA | Universal Matchable (SU) arrangement designation |
71902 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Performance: The P4A tolerance class ensures minimal runout and vibration, critical for precision applications. Combined with the extra light preload, this bearing delivers superior rotational accuracy and positioning precision.
Optimized Speed Capability: The phenolic cage provides excellent strength-to-weight ratio, enabling high-speed operation up to 95,000 rpm. The open design allows for efficient lubrication management during high-speed rotation.
Universal Matching Capability: As a Universal Matchable (SU) bearing, the 71902 ACD/P4ADGA can be paired with identical bearings in various configurations (back-to-back, face-to-face, or tandem) without requiring selective matching, simplifying installation and maintenance.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing effectively handles combined radial and axial loads, making it suitable for applications with complex loading conditions.
71902 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and servo motors requiring precision rotation
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Gyroscopes and navigation systems
- Semiconductor Manufacturing - Wafer handling and processing equipment
