71919 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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71919 CB/HCP4A Bearing Product Overview & Core Advantages
The 71919 CB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its primary advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery. The bearing features a P4 (ABEC-7) tolerance class for exceptional running accuracy, a phenolic resin cage for reduced weight and high-speed capability, and ceramic balls that significantly enhance performance by reducing centrifugal forces and operating temperatures. This combination delivers a compact, high-rigidity solution for the most demanding applications.
71919 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- 71919: Basic designation indicating a single-row angular contact ball bearing with a 95mm bore, 130mm OD, and 18mm width.
- CB: Denotes a specific contact angle of 15° and a matched preload for enhanced rigidity and precise rotational performance.
- HC: Stands for Hybrid Ceramic, signifying the use of ceramic balls with steel rings, offering benefits like higher speed capability and longer service life.
- P4A: Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements suitable for high-precision applications.
71919 CB/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The 15° contact angle and CB preload provide high axial and radial stiffness, ensuring minimal deflection under load and excellent positional accuracy.
Enhanced Speed Performance: The combination of a lightweight phenolic cage and ceramic balls reduces centrifugal forces and friction, enabling a high limiting speed of 24,000 rpm.
Superior Load Capacity: Designed to handle significant combined loads, with a dynamic load rating of 4095 lbf and a static load rating of 4185 lbf.
Optimized for High-Speed Operation: The hybrid ceramic design reduces heat generation and allows for stable operation within a wide temperature range (-30°C to 110°C).
71919 CB/HCP4A Bearing Typical Application Areas
The 71919 CB/HCP4A is ideally suited for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Dental and Medical Handpieces
- Aerospace Actuators and Control Systems
