71815 ACDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71815 ACDGC/P4 Bearing Product Overview & Core Advantages
The 71815 ACDGC/P4 is a precision angular contact ball bearing designed for applications requiring exceptional rigidity and running accuracy. As a single bearing with a 25° contact angle and P4 tolerance class, it delivers superior performance in handling combined radial and axial loads. Its compact design with a 10mm width makes it ideal for space-constrained, high-precision machinery. The bearing comes prelubricated and is part of a universally matchable (SU) set, allowing for flexible arrangement in complex spindle designs to achieve optimal preload and stiffness.
71815 ACDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation, indicating a 75mm bore, 95mm OD, and 10mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | High ball complement (33 balls) for increased load capacity. |
| GC | Specific internal clearance and preload group for moderate preload (Class C). |
| /P4 | Indicates high precision tolerance class, exceeding standard ABEC-7 specifications. |
71815 ACDGC/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads (2992 lbf dynamic, 3600 lbf static). The high ball complement (33 balls) further enhances its load-carrying capability and stiffness, making it suitable for applications demanding minimal deflection.
Precision and Speed Performance: Manufactured to P4 tolerance class, this bearing ensures extremely tight dimensional control for superior running accuracy. The lightweight phenolic cage contributes to lower inertia and smoother operation at high speeds, with a limiting speed of 28,000 rpm.
Universal Matching Capability (SU): As a Universal Matchable bearing, it can be mounted in any combination (DB, DF, DT) with other SU bearings from the same lot without preload variation, simplifying installation and ensuring consistent performance in multi-bearing arrangements.
Material and Lubrication: Constructed from chrome steel for both rings and balls, it offers high durability and wear resistance. The bearing is supplied prelubricated, ready for immediate use within its specified temperature range of -30°C to 110°C.
71815 ACDGC/P4 Bearing Typical Application Areas
The 71815 ACDGC/P4 is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and vibration.
- Robotics and Automation: Articulated arms and precision positioning systems.
