71810 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71810 CD/P4DGB Bearing Product Overview & Core Advantages
The 71810 CD/P4DGB is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a light preload (Class B), it is engineered to provide superior axial and radial load capacity in a compact design. Its primary characteristics include a 15° contact angle for optimal thrust load handling, a P4 tolerance class for extreme precision, and a phenolic resin cage enabling high rotational speeds up to 46,000 rpm. This bearing is pre-lubricated and operates reliably within a temperature range of -30°C to 110°C, making it an ideal solution for high-reliability, high-rigidity spindle systems.
71810 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71810 | Basic bearing designation, indicating a metric, super-precision angular contact bearing with a 50 mm bore, 65 mm OD, and 14 mm width. |
| C | Designates a 15° contact angle, optimized for high-speed applications requiring a balance of radial and axial load capacity. |
| D | Indicates the bearing is a universal matchable (SU) design. Two such bearings can be arranged in a back-to-back (DB) or face-to-face (DF) configuration to handle combined loads and moments. |
| P4 | Specifies the tolerance class P4, denoting ultra-precision manufacturing with extremely tight dimensional and running accuracy tolerances. |
| DGB | Suffix combination indicating a light preload (Class B) is applied. This preload eliminates internal clearance, enhancing system rigidity and rotational accuracy from the moment of installation. |
71810 CD/P4DGB Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The universal matchable (SU) design and applied light preload work in concert to deliver a highly rigid bearing system. This configuration minimizes axial and radial deflection under load, which is critical for maintaining precision in machining and positioning applications.
Superior Load Capacity: With a 15° contact angle, the 71810 CD/P4DGB efficiently handles significant combined (radial and axial) loads. Its robust construction, featuring 30 high-precision chrome steel balls, provides a high dynamic load rating of 2722 lbf and a static load rating of 3510 lbf.
Exceptional High-Speed Performance: The lightweight phenolic resin cage is a key enabler for the bearing's high limiting speed of 46,000 rpm. This cage material offers excellent strength-to-weight ratio and operates smoothly with minimal friction at high velocities.
Optimized for Precision Systems: Manufactured to P4 tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures predictable performance and minimal runout, which is essential for the accuracy of high-end spindles.
71810 CD/P4DGB Bearing Typical Application Areas
The 71810 CD/P4DGB is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Its primary applications include:
- High-Frequency CNC Spindles for precision milling, grinding, and drilling
- Precision Machine Tool Main Spindles
- High-Speed Robotic Drives and Actuators
- Dental and Medical Handpiece Spindles
- Aerospace Test and Measurement Equipment
