71914 ACDGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71914 ACDGC/HCP4A Bearing Product Overview & Core Advantages
The 71914 ACDGC/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied as a universally matchable (SU) set of two bearings, allowing for precise preload adjustment when mounted alongside a counterpart. Its core advantages include superior high-speed capability with a limiting speed of 29,000 rpm, enabled by a lightweight phenolic cage and ceramic balls, alongside a moderate preload (Class C) for enhanced system stiffness and reduced vibration.
71914 ACDGC/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Standard bearing series number, defining the bearing dimensions (70mm bore, 100mm OD, 16mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Enhanced internal design for higher load capacity. |
| GC | Specific internal clearance and preload group for optimal performance. |
| HC | Hybrid Ceramic construction, indicating ceramic balls. |
| P4A | High tolerance class (equivalent to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
71914 ACDGC/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and enables superior high-speed performance. This construction also provides increased stiffness and extended service life.
Lightweight Phenolic Cage: The phenolic resin cage offers excellent dimensional stability at high speeds, contributing to smooth operation and reduced vibration, which is critical for precision bearing applications.
Universal Matching (SU): Supplied as a set of two bearings that are universally matchable, allowing for flexible mounting arrangements to achieve the desired preload and system rigidity without selective assembly.
High-Precision Tolerances: The P4A tolerance class ensures minimal runout and precise rotational accuracy, making it ideal for applications where positional accuracy is paramount.
71914 ACDGC/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, precision, and rigidity are critical. Typical applications include:
- Machine Tool Spindles: High-speed machining centers and grinding spindles.
- Precision Robotics: Arm joints and rotary actuators requiring high positional accuracy.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and auxiliary power units.
- High-Frequency Motors and Spindles: For PCB drilling, dental drills, and small tool spindles.
