71956 ACD/P4ATGB
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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71956 ACD/P4ATGB Bearing Product Overview & Core Advantages
The 71956 ACD/P4ATGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. As a universal matchable bearing supplied in sets of three, it enables optimized preload configurations for superior system performance. Its P4A tolerance class ensures extremely tight dimensional control, while the 25° contact angle provides excellent capacity for handling combined loads (radial and axial). The phenolic cage and premium chrome steel construction contribute to its high-speed capability and long service life in precision machinery.
71956 ACD/P4ATGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° Contact Angle, Universal Matchable Design | Optimized for combined radial and axial loads, enables flexible mounting arrangements |
| P4A | Ultra-Precision Tolerance Class | Exceptional running accuracy for high-precision applications |
| TGB | Glass Fiber Reinforced Phenolic Cage, Universal Match | Enhanced high-speed performance and reduced friction |
71956 ACD/P4ATGB Bearing Structural Features & Performance Benefits
Optimized Contact Angle Design: The 25° contact angle provides superior axial load capacity while maintaining excellent radial load performance, making it ideal for applications experiencing combined loading conditions.
Precision Manufacturing: Manufactured to P4A tolerance class with extremely tight dimensional control (bore diameter tolerance: -0.004mm to 0), ensuring minimal runout and vibration for high-precision applications.
High-Speed Capability: The phenolic cage material offers excellent strength-to-weight ratio and compatibility with various lubricants, contributing to the bearing's limiting speed of 7,500 rpm.
Universal Matching Design: Supplied as universal matchable bearings in sets of three, allowing for flexible mounting arrangements and simplified preload adjustment to achieve optimal system rigidity.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing high hardness, wear resistance, and long-term dimensional stability under demanding operating conditions.
71956 ACD/P4ATGB Bearing Typical Application Areas
Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications requiring exceptional running accuracy and rigidity.
Precision Gearboxes: Industrial transmission systems where high-speed operation and precise positioning are critical.
Robotics and Automation: High-accuracy robotic joints, rotary tables, and precision positioning systems.
Aerospace Components: Aircraft accessory drives, helicopter transmissions, and other aerospace applications demanding reliability and precision.
Medical Equipment: High-speed dental handpieces, medical scanners, and laboratory equipment requiring smooth, precise rotation.
