71919 ACD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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71919 ACD/HCP4ADGB Bearing Product Overview & Core Advantages
The 71919 ACD/HCP4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universally matchable (SU) bearing is part of a preloaded pair (2 bearings in set) with a light preload (Class B), enabling it to handle combined radial and axial loads simultaneously. Its construction with a ceramic ball and phenolic cage facilitates high-speed operation up to 15,000 rpm, while the P4A tolerance class ensures superior running accuracy and system rigidity for the most critical applications.
71919 ACD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
- 71919: Basic bearing series and size designation (95mm bore, 130mm OD, 36mm width).
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies a specific internal design and high-precision grade.
- HC: Indicates the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7/ISO P4.
- ADGB: Specifies a Universal Matchable (SU) arrangement with a Light Preload (Class B).
71919 ACD/HCP4ADGB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design and universal matching capability allow for the creation of rigid, preloaded sets that can withstand significant combined loads and moments.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables extremely high limiting speeds (15,000 rpm) with minimal heat generation.
Enhanced Precision and Longevity: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration. The open seal design is optimized for clean, controlled environments and is supplied pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71919 ACD/HCP4ADGB Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers and grinding spindles.
- Precision Instrumentation: Medical devices, coordinate measuring machines.
- High-Frequency Motors and Spindles: Where extreme rotational accuracy and speed are critical.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other precision mechanisms.
