71803 CD/HCP4DBC
Hybrid Ceramic Super Precision Bearings
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71803 CD/HCP4DBC Bearing Product Overview & Core Advantages
The 71803 CD/HCP4DBC is a metric system, precision angular contact ball bearing designed for demanding applications. As a duplex back-to-back (DB) matched pair, it delivers exceptional high rigidity and can accommodate combined radial and axial loads. Manufactured to P4 tolerance class and featuring a ceramic ball and phenolic cage construction, this bearing is engineered for superior high-speed performance, thermal stability, and long service life in precision machinery.
71803 CD/HCP4DBC Bearing Model Code Explained, Specifications & Naming Convention
- 71803: Basic designation indicating a light series, 17mm bore, 26mm OD angular contact ball bearing.
- CD: Indicates a duplex back-to-back (DB) arrangement with a specific preload.
- HC: Signifies the use of Hybrid Ceramic balls (Silicon Nitride).
- P4: Denotes a high-precision tolerance class per ISO standards.
- DBC: Specifies a Moderate preload (Class C) applied to the duplex set.
71803 CD/HCP4DBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) matched arrangement provides a wide effective spread of load-bearing points, significantly increasing system rigidity and moment load capacity. This configuration is ideal for applications requiring precise shaft positioning under combined loads.
High-Speed & Thermal Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic resin cage (lightweight and self-lubricating) enables a very high limiting speed of 103,000 rpm. Hybrid construction also reduces operating temperature and minimizes thermal expansion.
Precision & Longevity: Manufactured to P4 tolerance class with a 15° contact angle, this bearing ensures running accuracy and smooth operation. The matched pair is supplied pre-lubricated and ready for installation, ensuring optimal performance from startup.
71803 CD/HCP4DBC Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Medical & Dental Equipment
- Aerospace Actuators & Instrumentation
