71916 CDGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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71916 CDGC/HCP4A Bearing Product Overview & Core Advantages
The 71916 CDGC/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied as part of a universally matchable (SU) set, allowing for flexible arrangements to support combined loads. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance up to 28,000 rpm, while the P4A tolerance class ensures ultra-precise running. Pre-lubricated and designed for a wide operating temperature range, it offers a reliable, high-performance solution for the most demanding machinery.
71916 CDGC/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with an 80mm bore, 110mm OD, and 16mm width. |
| C | Denotes a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| DG | Indicates a Universal Matchable (SU) bearing. Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to support combined radial and axial loads. |
| C | Specifies a Moderate Preload (Class C), which provides increased stiffness and minimizes axial and radial play for enhanced precision. |
| HCP4A | Combination code: HC refers to the hybrid ceramic construction (steel rings with ceramic balls). P4A is the tolerance class, specifying extremely tight dimensional and running accuracy standards superior to ABEC 7. |
71916 CDGC/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds. This construction also provides superior resistance to electrical arcing.
Phenolic Cage: The lightweight and robust phenolic resin cage offers excellent dimensional stability and low friction, contributing to the bearing's high limiting speed and smooth operation.
High Rigidity & Load Capacity: The 15° contact angle and moderate preload work in tandem to provide high system rigidity, enabling the bearing to effectively handle combined radial and axial loads.
Ultra-Precision: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring the highest levels of precision and positioning accuracy.
71916 CDGC/HCP4A Bearing Typical Application Areas
The 71916 CDGC/HCP4A is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators requiring high rigidity and accuracy.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Advanced Pump and Compressor Systems: Where high rotational speeds and reliability are required.
