71914 CD/P4ADFG19
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71914 CD/P4ADFG19 Bearing Product Overview & Core Advantages
The 71914 CD/P4ADFG19 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) matched set is preloaded and manufactured to the stringent P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it an ideal choice for high-precision spindles and other critical machinery where high rigidity and precise shaft positioning are paramount.
71914 CD/P4ADFG19 Bearing Model Code Explained, Specifications & Naming Convention
- 71914: Basic designation indicating a metric, angular contact ball bearing with a 70mm bore, 100mm OD, and 32mm width.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is part of a duplex pair (two bearings supplied as a matched set).
- P4A: Specifies the tolerance class, representing very high precision levels for both dimensional and running accuracy.
- DF: Defines the matched arrangement as Face-to-Face. This configuration provides good resistance to moment loads and offers high rigidity.
- G19: Signifies a specific preload level applied to the matched set, ensuring optimal stiffness and performance right from installation.
71914 CD/P4ADFG19 Bearing Structural Features & Performance Benefits
The performance of the 71914 CD/P4ADFG19 is a direct result of its advanced design and material selection. The duplex face-to-face (DF) arrangement creates a highly rigid support system that effectively counters tilting moments and maintains precise shaft alignment. The phenolic resin cage is lightweight and robust, contributing to smooth operation at the high limiting speed of 24,000 rpm, even under substantial loads. The chrome steel rings and balls provide high fatigue resistance, supporting the impressive dynamic and static load ratings. As a preloaded and lubricated set, it is ready for immediate installation, delivering consistent, high-performance operation from the start.
71914 CD/P4ADFG19 Bearing Typical Application Areas
This high-precision bearing set is engineered for applications where accuracy, speed, and rigidity are non-negotiable. Its primary use is in:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Industrial Pumps and Compressors requiring reliable, high-speed shaft support.
- Medical Equipment and Aerospace Instrumentation demanding the utmost precision.
