71803 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71803 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71803 ACDGA/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing delivers superior dimensional stability and minimal runout. Its 25° contact angle provides optimal performance for combined loads, efficiently handling both radial and axial forces in one direction. The phenolic cage ensures smooth operation at high speeds up to 103,000 rpm, while the universal matching (SU) capability allows for flexible mounting configurations in preloaded pairs. This bearing is pre-lubricated and operates within a temperature range of -30°C to 110°C, making it ideal for demanding industrial environments.
71803 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71803 | Basic bearing designation indicating metric dimensions (17mm bore, 26mm OD, 5mm width) |
| AC | Angular Contact design with 25° contact angle |
| DGA | Universal Matchable bearing (can be mounted in pairs) |
| P4 | High precision tolerance class for superior running accuracy |
71803 ACDGA/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: The P4 tolerance class ensures minimal dimensional variation and superior running accuracy, critical for high-speed applications. Bore and outside diameter tolerances of -0.004mm to 0 guarantee precise fit and alignment.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at extreme speeds up to 103,000 rpm. This material offers superior dimensional stability and reduced friction compared to metal cages.
Optimized Load Capacity: With a 25° contact angle, this bearing efficiently handles combined radial and axial loads. The dynamic load rating of 497 lbf and static load rating of 344 lbf ensure reliable performance under demanding conditions.
Universal Matching Design: The SU (Universal Matchable) feature allows two bearings to be mounted in various configurations (back-to-back, face-to-face, or tandem) to accommodate different load requirements and stiffness needs.
Premium Materials: Manufactured from chrome steel for both rings and balls, providing excellent hardness, wear resistance, and dimensional stability. The open design facilitates efficient lubrication and heat dissipation.
71803 ACDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional accuracy and speed
- Precision Instruments: Measuring equipment, optical devices, and laboratory instruments demanding minimal vibration and runout
- High-Speed Motors: Spindle motors, servo motors, and other high-RPM applications where precision and reliability are critical
- Aerospace Components: Guidance systems, instrumentation, and control mechanisms requiring high precision and reliability
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging devices needing smooth, precise rotation
