71817 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71817 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71817 ACDGA/P4 is a high-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 paired with another identical bearing to form a precisely matched set capable of handling combined radial and axial loads simultaneously. Manufactured to P4 tolerance class with an Extra light (Class A) preload, this bearing delivers superior running accuracy, high rigidity, and optimal performance in high-speed applications up to 28,000 rpm. Its compact design with a 13 mm width makes it ideal for space-constrained, high-performance machinery.
71817 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing series and size designation (85 mm bore, 110 mm OD) |
| AC | Angular Contact design with a 25° contact angle |
| D | Two single bearings in a Universal Matchable (SU) set |
| GA | Specific mounting preload: Extra light (Class A) |
| /P4 | High precision tolerance class for superior running accuracy |
71817 ACDGA/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring minimal runout and vibration for superior positional accuracy and system rigidity.
- Optimized Load Capacity: The 25° contact angle and robust construction enable efficient handling of combined loads (Radial dynamic: 4568 lbf, Static: 5400 lbf), making it suitable for complex loading conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage and optimized internal geometry contribute to low friction and stable operation at limiting speeds of 28,000 rpm, reducing centrifugal forces and heat generation.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be universally paired with another identical bearing without selective matching, simplifying inventory and assembly for preloaded duplex arrangements.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing high hardness, wear resistance, and a long operational life under demanding conditions.
71817 ACDGA/P4 Bearing Typical Application Areas
The 71817 ACDGA/P4 is engineered for high-precision, high-speed rotational systems. Its key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes: Especially in high-performance automotive and aerospace transmission systems.
- High-Frequency Spindles: Used in PCB drilling, semiconductor manufacturing, and other micro-machining applications.
- Medical Equipment: In dental handpieces, centrifuges, and imaging device rotors where reliability and precision are critical.
- Robotic Actuators: Providing accurate and responsive motion control in advanced automation systems.
