71826 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71826 CD/P4DGB Bearing Product Overview & Core Advantages
The 71826 CD/P4DGB is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. As part of the Universal Matchable (SU) series, it is specifically engineered to be mounted in pairs to form a rigid, preloaded set capable of handling combined loads (radial and axial) simultaneously. Its P4 tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other demanding machinery where minimal runout and vibration are critical.
71826 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71826 | Basic bearing designation, indicating the size series and bore diameter. |
| CD | Specifies a 15° contact angle and indicates the bearing is designed for Universal Matchable (SU) mounting in a back-to-back (DB) or face-to-face (DF) arrangement. |
| P4 | Denotes the tolerance class, signifying very high precision in dimensions and running accuracy. |
| DGB | Indicates a Light preload (Class B) is applied. This preload increases bearing rigidity and ensures optimal performance in the matched set. |
71826 CD/P4DGB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 15° contact angle is optimized to support significant combined radial and axial loads. When mounted as a Universal Matchable (SU) pair, the bearings create a highly rigid system that resists operational deflection, crucial for maintaining precision under load.
High-Speed Performance: The use of a lightweight, durable phenolic cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 11,000 rpm. The open design and standard lubrication facilitate efficient heat dissipation.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing guarantees consistent, high-accuracy performance essential for precision applications.
Matched Set Simplicity: As a Universal Matchable (SU) bearing, it simplifies the assembly of preloaded pairs, ensuring correct axial clearance and optimal performance without the need for selective matching.
71826 CD/P4DGB Bearing Typical Application Areas
The 71826 CD/P4DGB is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., milling, grinding, and lathe spindles)
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
