71815 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71815 CDGA/P4 Bearing Product Overview & Core Advantages
The 71815 CDGA/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 running accuracy, making it ideal for demanding scenarios. Its 15° contact angle is optimized to handle significant combined loads—simultaneously supporting radial and one-directional axial loads. The extra light preload (Class A) minimizes deflection and ensures smooth, precise operation from the start, while its compact cross-section (10 mm width) saves valuable space in intricate assemblies.
71815 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation indicating a metric, single-row angular contact ball bearing with a 75 mm bore, 95 mm OD, and 10 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and combined load capacity. |
| DG | Indicates the bearing is Universal Matchable (SU) and supplied as part of a matched set of 2 bearings (Duplex Group). This allows for precise preload control when mounted in pairs. |
| A | Denotes an Extra Light preload (Class A), which reduces initial runout and enhances system rigidity. |
| /P4 | Signifies the bearing is manufactured to P4 tolerance class, offering extremely tight dimensional and running accuracy for high-precision machinery. |
71815 CDGA/P4 Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4 super-precision standards, this bearing ensures minimal vibration and exceptional running accuracy, which is critical for high-speed spindles.
Optimized Load Capacity: The 15° contact angle and robust chrome steel construction enable it to efficiently handle combined radial and axial loads. With a dynamic load rating of 3218 lbf and a static load rating of 3825 lbf, it offers reliable performance under demanding conditions.
High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 22,000 rpm. This makes it suitable for very high-speed applications.
Universal Matching (SU): As a Universal Matchable bearing supplied in a matched set of 2, it can be arranged in duplex pairs (back-to-back or face-to-face) to achieve tailored preload and stiffness, simplifying installation and optimizing system performance.
Pre-Lubricated for Immediate Use: The bearing comes lubricated and is suitable for an operating temperature range of -30°C to 110°C, ensuring immediate operation and reducing initial setup time.
71815 CDGA/P4 Bearing Typical Application Areas
The 71815 CDGA/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 Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, centrifuges, and scanner gantries.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- High-Frequency Motors and Spindles: Where minimal runout and high rotational accuracy are required.
