71800 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71800 CD/P4DGB Bearing Product Overview & Core Advantages
The 71800 CD/P4DGB is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing features a universal matchable (SU) design, allowing two bearings to be mounted in a versatile arrangement to support combined loads. Its compact design, with a 10 mm bore and 19 mm outside diameter, makes it ideal for high-precision spindles and other space-constrained, high-reliability applications.
71800 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71800 | Basic bearing series, indicating a super-precision, light series angular contact design. |
| CD | Specifies a 15° contact angle and a universal (SU) matching designation. |
| P4 | Indicates the tolerance class (P4), signifying very high dimensional and running accuracy. |
| DGB | Denotes a duplex pair of bearings, pre-set with a light preload (Class B) and supplied lubricated. |
71800 CD/P4DGB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex pair (DGB) configuration creates a highly rigid system capable of supporting significant combined radial and axial loads in both directions. The 15° contact angle is optimized for high-speed operation with moderate axial load capacity.
Super-Precision High-Speed Performance: The phenolic cage and optimized internal geometry contribute to low friction and stable operation at high speeds, with a limiting speed of 95,000 rpm. The P4 tolerance class ensures minimal vibration and precise running accuracy.
Universal Matching & Preload: As Universal Matchable (SU) bearings, they can be arranged in back-to-back (DB), face-to-face (DF), or tandem (DT) configurations. The pair is supplied with a light preload (Class B), which eliminates internal clearance for superior shaft positioning accuracy and system stiffness.
71800 CD/P4DGB Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and drilling)
- Precision Instrumentation
- High-Frequency Spindles
- Medical and Dental Handpieces
- Aviation and Aerospace Auxiliary Systems
