71815 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71815 CD/P4DGA Bearing Product Overview & Core Advantages
The 71815 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Manufactured to P4 tolerance class, this bearing excels in high-speed and high-rigidity scenarios. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the extra light preload (Class A) ensures smooth, low-friction operation. The bearing is capable of handling combined loads, making it an ideal choice for complex mechanical systems requiring superior performance.
71815 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation, indicating a metric, angular contact type with a 75mm bore. |
| CD | Indicates a 15° contact angle and specific internal design optimized for high-speed operation. |
| P4 | Specifies the high-precision tolerance class, ensuring minimal dimensional and running inaccuracies. |
| DGA | Denotes a universal matchable (SU) bearing, supplied as one of a pair in a set of two for flexible mounting arrangements. |
71815 CD/P4DGA Bearing Structural Features & Performance Benefits
The performance of the 71815 CD/P4DGA is a direct result of its advanced construction. The phenolic cage contributes to lower friction and is ideal for high-speed applications, supporting the bearing's impressive limiting speed of 22,000 rpm. The 15° contact angle is optimized for handling significant axial loads in one direction while accommodating radial loads. With 33 high-precision chrome steel balls, the bearing achieves an excellent balance between load capacity and rotational smoothness. The open seal type allows for custom lubrication schemes, while the standard lubrication provides reliable operation within a temperature range of -30°C to 110°C. Its compact bearing dimensions (75mm bore, 95mm OD, 20mm width) and low weight (0.28 kg) facilitate integration into space-constrained, high-performance assemblies.
71815 CD/P4DGA Bearing Typical Application Areas
This precision bearing is engineered for demanding sectors where accuracy and speed are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In arm joints and rotary actuators requiring high rigidity and repeatability.
- High-Frequency Motors and Spindles: Where low vibration and thermal stability are critical.
- Medical and Laboratory Equipment: Such as centrifuges and precision scanners.
- Aerospace Actuation Systems: For control surfaces and other critical flight components.
