71948 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71948 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71948 ACD/P4ADGB is a precision angular contact ball bearing designed for applications requiring exceptional accuracy and reliability. As a universal matchable (SU) bearing supplied in a matched set of two, it enables simplified installation and optimal preload control. Its P4A tolerance class ensures superior running accuracy, while the 25° contact angle provides excellent capacity for handling combined radial and axial loads. This bearing is pre-lubricated and operates effectively within a wide temperature range, making it ideal for high-precision, high-rigidity applications.
71948 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular contact design with 25° contact angle |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| D | Light preload (Class B) |
| GB | Universal matchable (SU) arrangement |
71948 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 25° contact angle and robust design provide superior performance under combined radial and axial loads, with dynamic load rating of 78,975 lbf and static load rating of 137,250 lbf.
Advanced Cage Design: Phenolic cage material offers excellent strength-to-weight ratio, reduced friction, and superior performance at high speeds up to 7,500 rpm.
Universal Matching Capability: As universal matchable (SU) bearings supplied in sets of two, they can be arranged in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements.
Precision Preload: Factory-set light preload (Class B) ensures consistent performance, reduced noise, and extended service life in precision applications.
71948 ACD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Gearboxes - Industrial transmission systems requiring high accuracy
- Aerospace Systems - Flight control mechanisms and auxiliary power units
- Medical Equipment - High-speed dental handpieces and surgical tools
- Robotics - Precision joints and articulation points in industrial robots
- Test & Measurement Equipment - Coordinate measuring machines and optical instruments
