71815 CD/P4DGAGWK
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71815 CD/P4DGAGWK Bearing Product Overview & Core Advantages
The 71815 CD/P4DGAGWK is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy and performance. Manufactured to P4 tolerance class, this bearing excels in high-speed and high-rigidity scenarios. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement, simplifying mounting and ensuring optimal preload for superior system stability. The combination of a phenolic cage and factory-applied lubrication enables exceptional limiting speeds while maintaining smooth operation.
71815 CD/P4DGAGWK Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71815 CD | Bearing series and size designation | Defines the basic dimensions: 75mm bore, 95mm OD, 20mm width. |
| P4 | Tolerance Class | Indicates high-precision manufacturing with extremely tight dimensional and running accuracy tolerances. |
| D | Contact Angle | Signifies a 15° contact angle, optimized for carrying combined radial and axial loads. |
| GA | Preload | Denotes Extra Light (Class A) preload, minimizing friction and heat generation for high-speed operation. |
| GK | Lubrication | Specifies the type of factory-applied high-performance grease suitable for the specified temperature range. |
71815 CD/P4DGAGWK Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The P4 tolerance class ensures minimal runout and vibration, which is critical for applications like machine tool spindles. The universal matchable (SU) feature allows for precise preload control when mounted in pairs, significantly enhancing system rigidity and rotational accuracy.
Optimized for High-Speed Operation: The lightweight phenolic resin cage offers excellent strength-to-weight ratio and operates smoothly at high rotational velocities, contributing to the high limiting speed of 22,000 rpm. The 15° contact angle provides an ideal balance between radial and axial load capacity for dynamic high-speed applications.
Superior Load Capacity: Designed as an angular contact bearing, it efficiently supports combined loads (simultaneous radial and axial forces). The high dynamic and static load ratings ensure long service life and reliability under demanding conditions.
Ready-to-Install: The bearing is supplied lubricated from the factory, reducing assembly time and ensuring immediate, optimal performance upon installation.
71815 CD/P4DGAGWK Bearing Typical Application Areas
The 71815 CD/P4DGAGWK is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles: For CNC milling centers, lathes, and grinding machines requiring extreme accuracy and rigidity.
- High-Frequency Spindles: Used in PCB drilling and precision engraving equipment.
- Precision Instrumentation: In medical devices, optical scanners, and measuring apparatus.
- Robotics: For high-accuracy joints and arm assemblies.
