71813 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71813 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71813 ACDGA/P4 is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a single bearing with Universal Matchable (SU) designation, it can be universally paired with other bearings from the same batch to form a precisely preloaded set. Its P4 tolerance class ensures extremely tight dimensional control, while the Extra light (Class A) preload provides high rigidity with minimal friction, making it ideal for high-speed operation up to 36,000 rpm. The compact design, with a 65 mm bore and only 10 mm width, offers excellent space-saving solutions for precision machinery.
71813 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71813 | Basic bearing designation (65mm bore, 85mm OD, 10mm width) |
| AC | Angular Contact design with 25° contact angle |
| D | Two-piece phenolic cage design |
| GA | Universal Matchable bearing with specific preload (Extra light / Class A) |
| /P4 | Super-precision tolerance class for high-precision applications |
71813 ACDGA/P4 Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4 tolerance class ensures minimal runout and vibration, while the 25° contact angle and Class A preload deliver exceptional stiffness for precise positioning applications.
Optimized High-Speed Performance: The phenolic cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling stable operation at limiting speeds of 36,000 rpm. The optimized ball quantity (29) and ball diameter (5.556 mm) are calculated for balanced load distribution at high speeds.
Superior Load Capacity: With a radial dynamic load rating of 2,858 lbf and static load rating of 3,150 lbf, this bearing efficiently handles combined radial and axial loads in high-precision applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be universally paired with other bearings from the same manufacturing batch, simplifying installation and ensuring optimal preload in multi-bearing arrangements.
71813 ACDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles - High-speed milling and grinding spindles requiring precision and rigidity
- Precision Instrumentation - Measuring equipment and optical instruments demanding minimal runout
- High-Speed Automation - Robotics and automated handling systems requiring precise motion control
- Medical Equipment - Dental handpieces and surgical tools where reliability and precision are critical
- Aerospace Components - Guidance systems and auxiliary equipment requiring high-speed precision bearings
